kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 32351 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:__lock_acquire+0x1eb/0x3ff0 kernel/locking/lockdep.c:3295 Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff RSP: 0018:ffff88803f3cf910 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 device macsec1212 entered promiscuous mode RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88808ea54240 R14: 0000000000000110 R15: 0000000000000001 FS: 00007f765db0d8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f323000 CR3: 000000003dec3000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: device bridge1284 entered promiscuous mode device team0 entered promiscuous mode lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 flush_workqueue+0x117/0x13e0 kernel/workqueue.c:2661 nbd_disconnect_and_put+0x100/0x190 drivers/block/nbd.c:1928 IPv6: ADDRCONF(NETDEV_UP): macsec1212: link is not ready nbd_release+0x144/0x170 drivers/block/nbd.c:1458 __blkdev_put+0x636/0x870 fs/block_dev.c:1819 blkdev_close+0x86/0xb0 fs/block_dev.c:1888 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f765cc53270 Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 RSP: 002b:00007ffd1618c888 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f765cc53270 RDX: 000000000aba9500 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f765db0d710 R08: 0000000000000045 R09: 0000000000000018 R10: 0000564fdd7587d8 R11: 0000000000000246 R12: 0000000000000000 R13: 0000564fdd76b340 R14: 0000000000000003 R15: 000000000000000e Modules linked in: ---[ end trace 80fd7b4f3487c6ec ]--- RIP: 0010:__lock_acquire+0x1eb/0x3ff0 kernel/locking/lockdep.c:3295 Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff RSP: 0018:ffff88803f3cf910 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000022 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88808ea54240 R14: 0000000000000110 R15: 0000000000000001 FS: 00007f765db0d8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f323000 CR3: 000000003dec3000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 2b 29 sub (%rcx),%ebp 2: 00 00 add %al,(%rax) 4: 48 81 c4 98 01 00 00 add $0x198,%rsp b: 44 89 f8 mov %r15d,%eax e: 5b pop %rbx f: 5d pop %rbp 10: 41 5c pop %r12 12: 41 5d pop %r13 14: 41 5e pop %r14 16: 41 5f pop %r15 18: c3 retq 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 f2 mov %r14,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 b3 2a 00 00 jne 0x2ae7 34: 49 81 3e 20 f2 66 8c cmpq $0xffffffff8c66f220,(%r14) 3b: 0f .byte 0xf 3c: 84 65 ff test %ah,-0x1(%rbp) 3f: ff .byte 0xff