loop0: detected capacity change from 0 to 32768 workqueue: Failed to create a rescuer kthread for wq "bcachefs": -EINTR bcachefs (076a1832-646e-4f3c-b13d-b3e266154efd): shutdown complete ------------[ cut here ]------------ kernel BUG at fs/bcachefs/super.c:567! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 6873 Comm: syz-executor.0 Not tainted 6.9.0-syzkaller-09868-g6e51b4b5bbc0 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__bch2_fs_free fs/bcachefs/super.c:567 [inline] RIP: 0010:bch2_fs_release+0x6b0/0x810 fs/bcachefs/super.c:603 Code: 89 ee e8 63 7d 7b fd 48 85 ed 75 34 e8 29 82 7b fd 31 ff 4c 89 ee e8 4f 7d 7b fd 4d 85 ed 0f 84 02 fc ff ff e8 11 82 7b fd 90 <0f> 0b e8 09 82 7b fd 48 8b 7c 24 10 e8 7f 63 d9 ff e9 cb fa ff ff RSP: 0000:ffffc9000e047410 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888061080068 RCX: ffffc90003f21000 RDX: 0000000000040000 RSI: ffffffff8412febf RDI: 0000000000000007 RBP: 0000000000000008 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e8fb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000edabe000 CR3: 00000000120f0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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 bch2_fs_alloc+0xe49/0x2550 fs/bcachefs/super.c:954 bch2_fs_open+0x713/0x10f0 fs/bcachefs/super.c:2102 bch2_mount+0xd41/0x1090 fs/bcachefs/fs.c:1917 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1779 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf729d579 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:00000000f5e8f400 EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f5e8f460 RCX: 0000000020000080 RDX: 0000000020011a00 RSI: 0000000001200014 RDI: 00000000f5e8f4a0 RBP: 00000000f5e8f460 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_fs_free fs/bcachefs/super.c:567 [inline] RIP: 0010:bch2_fs_release+0x6b0/0x810 fs/bcachefs/super.c:603 Code: 89 ee e8 63 7d 7b fd 48 85 ed 75 34 e8 29 82 7b fd 31 ff 4c 89 ee e8 4f 7d 7b fd 4d 85 ed 0f 84 02 fc ff ff e8 11 82 7b fd 90 <0f> 0b e8 09 82 7b fd 48 8b 7c 24 10 e8 7f 63 d9 ff e9 cb fa ff ff RSP: 0000:ffffc9000e047410 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888061080068 RCX: ffffc90003f21000 RDX: 0000000000040000 RSI: ffffffff8412febf RDI: 0000000000000007 RBP: 0000000000000008 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000008 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e8fb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000edabe000 CR3: 00000000120f0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi