Hello, syzbot found the following issue on: HEAD commit: 3d25a941ea50 Merge tag 'block-6.9-20240503' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16832004980000 kernel config: https://syzkaller.appspot.com/x/.config?x=3310e643b6ef5d69 dashboard link: https://syzkaller.appspot.com/bug?extid=8905ded1b49ae88b96a6 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-3d25a941.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9d8ed74e49f1/vmlinux-3d25a941.xz kernel image: https://storage.googleapis.com/syzbot-assets/d724e9151b52/bzImage-3d25a941.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8905ded1b49ae88b96a6@xxxxxxxxxxxxxxxxxxxxxxxxx XFS (loop3): Unmounting Filesystem 4194cad6-cad4-4798-ac4c-c2118f686eb1 general protection fault, probably for non-canonical address 0xe01ffbf1100d6a7e: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0x00ffff88806b53f0-0x00ffff88806b53f7] CPU: 2 PID: 1404 Comm: syz-executor.3 Not tainted 6.9.0-rc6-syzkaller-00227-g3d25a941ea50 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__lock_acquire+0xe3e/0x3b30 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 f3 80 de 11 0f 82 be 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 1f 00 00 49 81 3c 24 a0 2c a1 92 0f 84 98 f2 RSP: 0018:ffffc90004047ab8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 001ffff1100d6a7e RSI: ffff888052a24880 RDI: 00ffff88806b53f1 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8f9f5217 R11: 0000000000000003 R12: 00ffff88806b53f1 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000555587484480(0000) GS:ffff88806b400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd649d1c18 CR3: 000000005b7a0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 put_pwq_unlocked kernel/workqueue.c:1671 [inline] put_pwq_unlocked kernel/workqueue.c:1664 [inline] destroy_workqueue+0x5df/0xaa0 kernel/workqueue.c:5739 xfs_destroy_mount_workqueues+0x37/0x150 fs/xfs/xfs_super.c:599 xfs_fs_put_super+0x134/0x160 fs/xfs/xfs_super.c:1141 generic_shutdown_super+0x159/0x3d0 fs/super.c:641 kill_block_super+0x3b/0x90 fs/super.c:1675 xfs_kill_sb+0x15/0x50 fs/xfs/xfs_super.c:2026 deactivate_locked_super+0xbe/0x1a0 fs/super.c:472 deactivate_super+0xde/0x100 fs/super.c:505 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9526a7efd7 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd649d23c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9526a7efd7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd649d2480 RBP: 00007ffd649d2480 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd649d3540 R13: 00007f9526ac83b9 R14: 00000000000ddcc5 R15: 0000000000000014 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xe3e/0x3b30 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 f3 80 de 11 0f 82 be 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 1f 00 00 49 81 3c 24 a0 2c a1 92 0f 84 98 f2 RSP: 0018:ffffc90004047ab8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 001ffff1100d6a7e RSI: ffff888052a24880 RDI: 00ffff88806b53f1 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8f9f5217 R11: 0000000000000003 R12: 00ffff88806b53f1 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000555587484480(0000) GS:ffff88806b400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd649d1c18 CR3: 000000005b7a0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 11 00 adc %eax,(%rax) 2: 00 39 add %bh,(%rcx) 4: 05 f3 80 de 11 add $0x11de80f3,%eax 9: 0f 82 be 05 00 00 jb 0x5cd f: ba 01 00 00 00 mov $0x1,%edx 14: e9 e4 00 00 00 jmp 0xfd 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 e2 mov %r12,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 82 1f 00 00 jne 0x1fb6 34: 49 81 3c 24 a0 2c a1 cmpq $0xffffffff92a12ca0,(%r12) 3b: 92 3c: 0f .byte 0xf 3d: 84 .byte 0x84 3e: 98 cwtl 3f: f2 repnz --- 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. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
