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 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.
