Oops: general protection fault, probably for non-canonical address 0xdffffc0000002002: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000000010010-0x0000000000010017] CPU: 0 PID: 5236 Comm: syz-executor.0 Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #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 33 d6 1f 12 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 e0 4d e3 92 0f 84 98 f2 RSP: 0018:ffffc900031dfa80 EFLAGS: 00010003 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000002002 RSI: ffff88801bccc880 RDI: 0000000000010017 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8fe2e217 R11: 0000000000000001 R12: 0000000000010017 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:0000000056939400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007ff41f48e430 CR3: 000000005a4e4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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:1662 [inline] put_pwq_unlocked kernel/workqueue.c:1655 [inline] destroy_workqueue+0x5df/0xaa0 kernel/workqueue.c:5851 bch2_fs_btree_interior_update_exit+0x45/0xb0 fs/bcachefs/btree_update_interior.c:2653 __bch2_fs_free fs/bcachefs/super.c:553 [inline] bch2_fs_release+0xfb/0x870 fs/bcachefs/super.c:605 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1fa/0x5b0 lib/kobject.c:737 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 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_fast_syscall_32+0x80/0x120 arch/x86/entry/common.c:389 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf734c579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffdca238 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffdca2e0 RCX: 0000000000000009 RDX: 00000000f74a2ff4 RSI: 00000000f73f3361 RDI: 00000000ffdcb384 RBP: 00000000ffdca2e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xe3e/0x3b30 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 33 d6 1f 12 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 e0 4d e3 92 0f 84 98 f2 RSP: 0018:ffffc900031dfa80 EFLAGS: 00010003 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000002002 RSI: ffff88801bccc880 RDI: 0000000000010017 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8fe2e217 R11: 0000000000000001 R12: 0000000000010017 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:0000000056939400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007ff41f48e430 CR3: 000000005a4e4000 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 33 d6 1f 12 add $0x121fd633,%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 e0 4d e3 cmpq $0xffffffff92e34de0,(%r12) 3b: 92 3c: 0f .byte 0xf 3d: 84 .byte 0x84 3e: 98 cwtl 3f: f2 repnz