udevd[1718]: inotify_add_watch(7, /dev/sdb, 10) failed: No such file or directory general protection fault, probably for non-canonical address 0xdffffc000000002a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000150-0x0000000000000157] CPU: 0 PID: 1718 Comm: udevd Not tainted 5.18.0-rc1-syzkaller-00009-gce4c854ee868 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0xd85/0x56c0 kernel/locking/lockdep.c:4899 Code: 1b 0e 41 be 01 00 00 00 0f 86 c8 00 00 00 89 05 61 9f 1b 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 15 31 00 00 48 81 3b 20 14 23 8f 0f 84 4f f3 ff RSP: 0018:ffffc9000b03f9f0 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 0000000000000150 RCX: 0000000000000000 RDX: 000000000000002a RSI: 0000000000000000 RDI: 0000000000000150 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88802e986080 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f43b6ce8840(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557a732cd1f8 CR3: 0000000071ac4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5641 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606 down_write+0x90/0x150 kernel/locking/rwsem.c:1514 inode_lock include/linux/fs.h:748 [inline] simple_recursive_removal+0x171/0x830 fs/libfs.c:276 debugfs_remove fs/debugfs/inode.c:742 [inline] debugfs_remove+0x59/0x80 fs/debugfs/inode.c:736 blk_mq_debugfs_unregister_queue_rqos+0x34/0x70 block/blk-mq-debugfs.c:840 rq_qos_exit+0x1e/0xf0 block/blk-rq-qos.c:297 disk_release_mq block/genhd.c:1142 [inline] disk_release+0x191/0x420 block/genhd.c:1168 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:753 put_device+0x1b/0x30 drivers/base/core.c:3512 blkdev_close+0x64/0x80 block/fops.c:512 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294 do_syscall_64+0x42/0x80 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f43b6925fc3 Code: 48 ff ff ff b8 ff ff ff ff e9 3e ff ff ff 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 RSP: 002b:00007ffcae234a88 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f43b6ce86a8 RCX: 00007f43b6925fc3 RDX: 000000000000001c RSI: 00007ffcae234288 RDI: 0000000000000008 RBP: 0000557a7330c040 R08: 0000000000000007 R09: 0000557a732d2c70 R10: 00007f43b69b4fc0 R11: 0000000000000246 R12: 0000000000000002 R13: 0000557a732d0010 R14: 0000000000000008 R15: 0000557a732b42c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xd85/0x56c0 kernel/locking/lockdep.c:4899 Code: 1b 0e 41 be 01 00 00 00 0f 86 c8 00 00 00 89 05 61 9f 1b 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 15 31 00 00 48 81 3b 20 14 23 8f 0f 84 4f f3 ff RSP: 0018:ffffc9000b03f9f0 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 0000000000000150 RCX: 0000000000000000 RDX: 000000000000002a RSI: 0000000000000000 RDI: 0000000000000150 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88802e986080 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f43b6ce8840(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557a732cd1f8 CR3: 0000000071ac4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 1b 0e sbb (%rsi),%ecx 2: 41 be 01 00 00 00 mov $0x1,%r14d 8: 0f 86 c8 00 00 00 jbe 0xd6 e: 89 05 61 9f 1b 0e mov %eax,0xe1b9f61(%rip) # 0xe1b9f75 14: e9 bd 00 00 00 jmpq 0xd6 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 da mov %rbx,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 15 31 00 00 jne 0x3149 34: 48 81 3b 20 14 23 8f cmpq $0xffffffff8f231420,(%rbx) 3b: 0f .byte 0xf 3c: 84 4f f3 test %cl,-0xd(%rdi) 3f: ff .byte 0xff