syzbot has found a reproducer for the following issue on: HEAD commit: ab87603b2511 net: wwan: t7xx: Ensure init is completed bef.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=1157266a280000 kernel config: https://syzkaller.appspot.com/x/.config?x=eb92acf166a5d2cd dashboard link: https://syzkaller.appspot.com/bug?extid=eba589d8f49c73d356da compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=124d5da6280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ac3ed2228400/disk-ab87603b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c51b74034116/vmlinux-ab87603b.xz kernel image: https://storage.googleapis.com/syzbot-assets/98ab9d7ee1ee/bzImage-ab87603b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+eba589d8f49c73d356da@xxxxxxxxxxxxxxxxxxxxxxxxx infiniband syz2: set active infiniband syz2: added team0 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 PID: 5133 Comm: syz-executor.3 Not tainted 6.4.0-rc1-syzkaller-00136-gab87603b2511 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 assign_lock_key kernel/locking/lockdep.c:982 [inline] register_lock_class+0xdb6/0x1120 kernel/locking/lockdep.c:1295 __lock_acquire+0x10a/0x5df0 kernel/locking/lockdep.c:4951 lock_acquire kernel/locking/lockdep.c:5691 [inline] lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5656 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162 skb_dequeue+0x20/0x180 net/core/skbuff.c:3639 drain_resp_pkts drivers/infiniband/sw/rxe/rxe_comp.c:555 [inline] rxe_completer+0x250d/0x3cc0 drivers/infiniband/sw/rxe/rxe_comp.c:652 rxe_qp_do_cleanup+0x1be/0x820 drivers/infiniband/sw/rxe/rxe_qp.c:761 execute_in_process_context+0x3b/0x150 kernel/workqueue.c:3473 __rxe_cleanup+0x21e/0x370 drivers/infiniband/sw/rxe/rxe_pool.c:233 rxe_create_qp+0x3f6/0x5f0 drivers/infiniband/sw/rxe/rxe_verbs.c:583 create_qp+0x5ac/0x970 drivers/infiniband/core/verbs.c:1235 ib_create_qp_kernel+0xa1/0x310 drivers/infiniband/core/verbs.c:1346 ib_create_qp include/rdma/ib_verbs.h:3743 [inline] create_mad_qp+0x177/0x380 drivers/infiniband/core/mad.c:2905 ib_mad_port_open drivers/infiniband/core/mad.c:2986 [inline] ib_mad_init_device+0xf40/0x1a90 drivers/infiniband/core/mad.c:3077 add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:721 enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1332 ib_register_device drivers/infiniband/core/device.c:1420 [inline] ib_register_device+0x8b1/0xbc0 drivers/infiniband/core/device.c:1366 rxe_register_device+0x302/0x3e0 drivers/infiniband/sw/rxe/rxe_verbs.c:1485 rxe_net_add+0x90/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:527 rxe_newlink+0xf0/0x1b0 drivers/infiniband/sw/rxe/rxe.c:197 nldev_newlink+0x332/0x5e0 drivers/infiniband/core/nldev.c:1731 rdma_nl_rcv_msg+0x371/0x6a0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2fc/0x440 drivers/infiniband/core/netlink.c:239 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xde/0x190 net/socket.c:747 ____sys_sendmsg+0x71c/0x900 net/socket.c:2503 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2557 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2586 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7a1ee8c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7a1fc76168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f7a1efabf80 RCX: 00007f7a1ee8c169 RDX: 0000000000000040 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00007f7a1eee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc46ccb6f R14: 00007f7a1fc76300 R15: 0000000000022000 </TASK> general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 PID: 5133 Comm: syz-executor.3 Not tainted 6.4.0-rc1-syzkaller-00136-gab87603b2511 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:flush_send_queue drivers/infiniband/sw/rxe/rxe_comp.c:597 [inline] RIP: 0010:rxe_completer+0x255c/0x3cc0 drivers/infiniband/sw/rxe/rxe_comp.c:653 Code: 80 3c 02 00 0f 85 81 10 00 00 49 8b af 88 03 00 00 48 8d 45 30 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 83 11 00 00 48 8d 45 2c 44 8b RSP: 0018:ffffc9000419e938 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffed100f5fb800 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff877f3bea RDI: ffff88807afdc388 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: fffffbfff1cf4e42 R11: 205d313330355420 R12: ffff88807afdc1a0 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807afdc000 FS: 00007f7a1fc76700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001136000 CR3: 00000000206d3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> rxe_qp_do_cleanup+0x1be/0x820 drivers/infiniband/sw/rxe/rxe_qp.c:761 execute_in_process_context+0x3b/0x150 kernel/workqueue.c:3473 __rxe_cleanup+0x21e/0x370 drivers/infiniband/sw/rxe/rxe_pool.c:233 rxe_create_qp+0x3f6/0x5f0 drivers/infiniband/sw/rxe/rxe_verbs.c:583 create_qp+0x5ac/0x970 drivers/infiniband/core/verbs.c:1235 ib_create_qp_kernel+0xa1/0x310 drivers/infiniband/core/verbs.c:1346 ib_create_qp include/rdma/ib_verbs.h:3743 [inline] create_mad_qp+0x177/0x380 drivers/infiniband/core/mad.c:2905 ib_mad_port_open drivers/infiniband/core/mad.c:2986 [inline] ib_mad_init_device+0xf40/0x1a90 drivers/infiniband/core/mad.c:3077 add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:721 enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1332 ib_register_device drivers/infiniband/core/device.c:1420 [inline] ib_register_device+0x8b1/0xbc0 drivers/infiniband/core/device.c:1366 rxe_register_device+0x302/0x3e0 drivers/infiniband/sw/rxe/rxe_verbs.c:1485 rxe_net_add+0x90/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:527 rxe_newlink+0xf0/0x1b0 drivers/infiniband/sw/rxe/rxe.c:197 nldev_newlink+0x332/0x5e0 drivers/infiniband/core/nldev.c:1731 rdma_nl_rcv_msg+0x371/0x6a0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2fc/0x440 drivers/infiniband/core/netlink.c:239 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0xde/0x190 net/socket.c:747 ____sys_sendmsg+0x71c/0x900 net/socket.c:2503 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2557 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2586 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7a1ee8c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7a1fc76168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f7a1efabf80 RCX: 00007f7a1ee8c169 RDX: 0000000000000040 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00007f7a1eee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc46ccb6f R14: 00007f7a1fc76300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:flush_send_queue drivers/infiniband/sw/rxe/rxe_comp.c:597 [inline] RIP: 0010:rxe_completer+0x255c/0x3cc0 drivers/infiniband/sw/rxe/rxe_comp.c:653 Code: 80 3c 02 00 0f 85 81 10 00 00 49 8b af 88 03 00 00 48 8d 45 30 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 83 11 00 00 48 8d 45 2c 44 8b RSP: 0018:ffffc9000419e938 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffed100f5fb800 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff877f3bea RDI: ffff88807afdc388 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: fffffbfff1cf4e42 R11: 205d313330355420 R12: ffff88807afdc1a0 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807afdc000 FS: 00007f7a1fc76700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001136000 CR3: 00000000206d3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 4: 0f 85 81 10 00 00 jne 0x108b a: 49 8b af 88 03 00 00 mov 0x388(%r15),%rbp 11: 48 8d 45 30 lea 0x30(%rbp),%rax 15: 48 89 c2 mov %rax,%rdx 18: 48 89 04 24 mov %rax,(%rsp) 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e 83 11 00 00 jle 0x11bd 3a: 48 8d 45 2c lea 0x2c(%rbp),%rax 3e: 44 rex.R 3f: 8b .byte 0x8b --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
