On Mon, May 17, 2021 at 12:05 PM syzbot <syzbot+0beedf55972341845fa1@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: bdefec9a minor fix > git tree: https://github.com/google/kmsan.git master > console output: https://syzkaller.appspot.com/x/log.txt?x=154a6123d00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4e6842a91012889c > dashboard link: https://syzkaller.appspot.com/bug?extid=0beedf55972341845fa1 > compiler: Debian clang version 11.0.1-2 > userspace arch: i386 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+0beedf55972341845fa1@xxxxxxxxxxxxxxxxxxxxxxxxx > > ===================================================== > BUG: KMSAN: uninit-value in sctp_inq_pop+0x15cb/0x1970 net/sctp/inqueue.c:205 if (chunk->chunk_end + sizeof(*ch) <= skb_tail_pointer(chunk->skb)) { /* This is not a singleton */ chunk->singleton = 0; I'm thinking to change this to: if (chunk->chunk_end <= skb_tail_pointer(chunk->skb) - sizeof(*ch)) { /* This is not a singleton */ chunk->singleton = 0; > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_inq_pop+0x15cb/0x1970 net/sctp/inqueue.c:205 > sctp_assoc_bh_rcv+0x207/0xe10 net/sctp/associola.c:994 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was stored to memory at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 > __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 > sctp_inq_pop+0x155b/0x1970 net/sctp/inqueue.c:201 > sctp_assoc_bh_rcv+0x207/0xe10 net/sctp/associola.c:994 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_inq_pop+0x1622/0x1970 net/sctp/inqueue.c:208 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_inq_pop+0x1622/0x1970 net/sctp/inqueue.c:208 > sctp_assoc_bh_rcv+0x207/0xe10 net/sctp/associola.c:994 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was stored to memory at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 > __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 > sctp_inq_pop+0x155b/0x1970 net/sctp/inqueue.c:201 > sctp_assoc_bh_rcv+0x207/0xe10 net/sctp/associola.c:994 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_assoc_bh_rcv+0x425/0xe10 net/sctp/associola.c:1001 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_assoc_bh_rcv+0x425/0xe10 net/sctp/associola.c:1001 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_assoc_bh_rcv+0x94d/0xe10 net/sctp/associola.c:1035 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_assoc_bh_rcv+0x94d/0xe10 net/sctp/associola.c:1035 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_chunk_event_lookup net/sctp/sm_statetable.c:976 [inline] > BUG: KMSAN: uninit-value in sctp_sm_lookup_event+0x5b0/0x740 net/sctp/sm_statetable.c:73 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_chunk_event_lookup net/sctp/sm_statetable.c:976 [inline] > sctp_sm_lookup_event+0x5b0/0x740 net/sctp/sm_statetable.c:73 > sctp_do_sm+0x191/0xa160 net/sctp/sm_sideeffect.c:1148 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_do_sm+0x9808/0xa160 net/sctp/sm_sideeffect.c:1153 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_do_sm+0x9808/0xa160 net/sctp/sm_sideeffect.c:1153 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_sf_eat_data_6_2+0x80a/0x12e0 net/sctp/sm_statefuns.c:3101 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_sf_eat_data_6_2+0x80a/0x12e0 net/sctp/sm_statefuns.c:3101 > sctp_do_sm+0x29a/0xa160 net/sctp/sm_sideeffect.c:1153 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_sf_abort_violation+0x484/0x16a0 net/sctp/sm_statefuns.c:4624 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_sf_abort_violation+0x484/0x16a0 net/sctp/sm_statefuns.c:4624 > sctp_sf_eat_data_6_2+0x36c/0x12e0 net/sctp/sm_statefuns.c:4717 > sctp_do_sm+0x29a/0xa160 net/sctp/sm_sideeffect.c:1153 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > ===================================================== > BUG: KMSAN: uninit-value in sctp_ulpevent_make_assoc_change+0x96a/0xff0 net/sctp/ulpevent.c:126 > CPU: 0 PID: 4692 Comm: systemd-udevd Tainted: G B W 5.12.0-rc6-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > <IRQ> > __dump_stack lib/dump_stack.c:79 [inline] > dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 > kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 > __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 > sctp_ulpevent_make_assoc_change+0x96a/0xff0 net/sctp/ulpevent.c:126 > sctp_cmd_assoc_failed net/sctp/sm_sideeffect.c:625 [inline] > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1608 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x374f/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > invoke_softirq kernel/softirq.c:221 [inline] > __irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422 > irq_exit_rcu+0xe/0x10 kernel/softirq.c:434 > sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100 > </IRQ> > asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650 > RIP: 0010:kmsan_get_shadow_origin_ptr+0x6/0xb0 mm/kmsan/kmsan_shadow.c:133 > Code: 0f 00 75 10 48 8b 45 b8 c6 80 3c 1a 00 00 01 e9 63 fe ff ff 48 c7 c7 7f 3a 7a 90 31 c0 e8 eb e5 25 ff cc cc 55 48 89 e5 41 57 <41> 56 53 41 89 d7 48 89 f3 49 89 fe 48 81 fe 01 10 00 00 73 6e 80 > RSP: 0018:ffff8881174eb498 EFLAGS: 00000246 > RAX: ffff88811777c628 RBX: 0000000000000000 RCX: 00000001170eb740 > RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811777c618 > RBP: ffff8881174eb4a0 R08: ffffea000000000f R09: ffff88813fffa000 > R10: 0000000000000002 R11: ffff8881117eddc0 R12: ffff88811777c618 > R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881174eb740 > __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55 > tomoyo_path_matches_pattern+0x88/0x4d0 security/tomoyo/util.c:941 > tomoyo_compare_name_union security/tomoyo/file.c:87 [inline] > tomoyo_check_path_acl+0x272/0x360 security/tomoyo/file.c:260 > tomoyo_check_acl+0x249/0x5d0 security/tomoyo/domain.c:175 > tomoyo_path_permission security/tomoyo/file.c:586 [inline] > tomoyo_check_open_permission+0x61f/0xdf0 security/tomoyo/file.c:777 > tomoyo_file_open+0x24c/0x2d0 security/tomoyo/tomoyo.c:313 > security_file_open+0xb1/0x1f0 security/security.c:1589 > do_dentry_open+0x4d5/0x1b50 fs/open.c:813 > vfs_open+0xaf/0xe0 fs/open.c:940 > do_open fs/namei.c:3365 [inline] > path_openat+0x5731/0x6be0 fs/namei.c:3498 > do_filp_open+0x2b8/0x710 fs/namei.c:3525 > do_sys_openat2+0x25f/0x830 fs/open.c:1187 > do_sys_open fs/open.c:1203 [inline] > __do_sys_open fs/open.c:1211 [inline] > __se_sys_open+0x271/0x2d0 fs/open.c:1207 > __x64_sys_open+0x4a/0x70 fs/open.c:1207 > do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7fbf5e7ec9b1 > Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 > RSP: 002b:00007ffeaa699a98 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 > RAX: ffffffffffffffda RBX: 0000563f833af280 RCX: 00007fbf5e7ec9b1 > RDX: 00000000000000fe RSI: 0000000000090800 RDI: 0000563f83376370 > RBP: 00007fbf5f9a2710 R08: 0000563f83392900 R09: 0000000000001010 > R10: 0000000000000030 R11: 0000000000000202 R12: 0000000000000000 > R13: 0000563f83376370 R14: 00000000000000fe R15: 0000563f83376370 > > Uninit was created at: > kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] > kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104 > kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 > slab_alloc_node mm/slub.c:2922 [inline] > __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 > kmalloc_reserve net/core/skbuff.c:353 [inline] > __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 > alloc_skb include/linux/skbuff.h:1103 [inline] > sctp_packet_pack net/sctp/output.c:442 [inline] > sctp_packet_transmit+0x17ac/0x44c0 net/sctp/output.c:588 > sctp_outq_flush_transports net/sctp/outqueue.c:1154 [inline] > sctp_outq_flush+0x1e56/0x6510 net/sctp/outqueue.c:1202 > sctp_outq_uncork+0x105/0x120 net/sctp/outqueue.c:758 > sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] > sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] > sctp_do_sm+0x9a18/0xa160 net/sctp/sm_sideeffect.c:1156 > sctp_assoc_bh_rcv+0xa3f/0xe10 net/sctp/associola.c:1048 > sctp_inq_push+0x31c/0x440 net/sctp/inqueue.c:80 > sctp_rcv+0x562f/0x60d0 net/sctp/input.c:256 > sctp6_rcv+0x64/0xd0 net/sctp/ipv6.c:1078 > ip6_protocol_deliver_rcu+0x1402/0x25f0 net/ipv6/ip6_input.c:422 > ip6_input_finish net/ipv6/ip6_input.c:463 [inline] > NF_HOOK include/linux/netfilter.h:301 [inline] > ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:472 > dst_input include/net/dst.h:458 [inline] > ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76 > NF_HOOK include/linux/netfilter.h:301 [inline] > ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:297 > __netif_receive_skb_one_core net/core/dev.c:5384 [inline] > __netif_receive_skb+0x1ec/0x640 net/core/dev.c:5498 > process_backlog+0x517/0xbd0 net/core/dev.c:6365 > __napi_poll+0x13e/0xca0 net/core/dev.c:6912 > napi_poll net/core/dev.c:6979 [inline] > net_rx_action+0x726/0x14a0 net/core/dev.c:7065 > __do_softirq+0x1b9/0x715 kernel/softirq.c:345 > ===================================================== > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
