bcachefs (loop3): flushing journal and stopping allocators complete, journal seq 10 ------------[ cut here ]------------ kernel BUG at fs/bcachefs/journal.c:1187! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 5216 Comm: syz-executor Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:bch2_fs_journal_stop+0x3a9/0x400 fs/bcachefs/journal.c:1187 Code: c1 ea 03 80 3c 02 00 75 5c 4c 8b a3 38 06 00 00 4c 89 f7 4c 89 e6 e8 d6 4d 85 fd 4d 39 e6 0f 84 7c fe ff ff e8 58 53 85 fd 90 <0f> 0b 4c 89 ef e8 3d 76 e2 fd e9 e9 fc ff ff e8 33 ad d2 06 48 89 RSP: 0018:ffffc90002a87a58 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880288ca5c0 RCX: ffffffff84093afa RDX: ffff88801df78000 RSI: ffffffff84093b08 RDI: 0000000000000006 RBP: 1ffff92000550f4c R08: 0000000000000006 R09: 000000000000000b R10: 000000000000000a R11: 0000000000000002 R12: 000000000000000a R13: ffff8880288ca600 R14: 000000000000000b R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:0000000057476440 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000031cf5ff8 CR3: 00000000526d4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bch2_fs_read_only+0x334/0x500 fs/bcachefs/super.c:291 bch2_fs_read_only+0x9b2/0xf10 fs/bcachefs/super.c:356 __bch2_fs_stop+0xfc/0x540 fs/bcachefs/super.c:615 generic_shutdown_super+0x159/0x3d0 fs/super.c:642 bch2_kill_sb+0x3b/0x50 fs/bcachefs/fs.c:2044 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: 0023:0xf7414579 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:00000000ffee0d98 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffee0e40 RCX: 0000000000000009 RDX: 00000000f7400ff4 RSI: 00000000f72fe35a RDI: 00000000ffee1ed4 RBP: 00000000ffee0e40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_fs_journal_stop+0x3a9/0x400 fs/bcachefs/journal.c:1187 Code: c1 ea 03 80 3c 02 00 75 5c 4c 8b a3 38 06 00 00 4c 89 f7 4c 89 e6 e8 d6 4d 85 fd 4d 39 e6 0f 84 7c fe ff ff e8 58 53 85 fd 90 <0f> 0b 4c 89 ef e8 3d 76 e2 fd e9 e9 fc ff ff e8 33 ad d2 06 48 89 RSP: 0018:ffffc90002a87a58 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880288ca5c0 RCX: ffffffff84093afa RDX: ffff88801df78000 RSI: ffffffff84093b08 RDI: 0000000000000006 RBP: 1ffff92000550f4c R08: 0000000000000006 R09: 000000000000000b R10: 000000000000000a R11: 0000000000000002 R12: 000000000000000a R13: ffff8880288ca600 R14: 000000000000000b R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:0000000057476440 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000055fec8ed0000 CR3: 00000000526d4000 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