REISERFS panic (device loop0): journal-2332 do_journal_end: Trying to log block 521, which is a log block ------------[ cut here ]------------ kernel BUG at fs/reiserfs/prints.c:390! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4817 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:__reiserfs_panic+0x167/0x170 fs/reiserfs/prints.c:390 Code: a0 5b 3b 8a 48 0f 44 c8 4c 0f 44 f0 48 c7 c7 60 5c 3b 8a 4c 89 fe 4c 89 f2 4c 8b 44 24 10 49 c7 c1 20 de 3f 96 e8 79 4e ff ff <0f> 0b 0f 1f 80 00 00 00 00 53 48 89 fb e8 d7 fe c6 f7 48 c7 c7 20 RSP: 0018:ffffc90003e4f980 EFLAGS: 00010246 RAX: 0000000000000069 RBX: 1ffff920007c9f34 RCX: cf0e7f6cb721f100 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90003e4faa0 R08: ffff8880b9033d7f R09: 1ffff110172067af R10: dffffc0000000000 R11: ffffed10172067b0 R12: ffffc90003e4f9c0 R13: dffffc0000000000 R14: ffffffff8a3ba740 R15: ffff88807e2906a8 FS: 000055558d297500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558d2b2a28 CR3: 000000006f63d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_journal_end+0x39fb/0x42d0 fs/reiserfs/journal.c:4149 reiserfs_sync_fs+0xe9/0x170 fs/reiserfs/super.c:78 sync_filesystem+0xe6/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x300 fs/super.c:448 kill_block_super+0x7c/0xe0 fs/super.c:1427 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x42d/0x4e0 fs/namespace.c:1148 task_work_run+0x125/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f71836ad157 Code: a2 c7 05 3c 84 23 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd4c4f99a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f718374033b RCX: 00007f71836ad157 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4c4f9a60 RBP: 00007ffd4c4f9a60 R08: 00007ffd4c4faa60 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd4c4faaf0 R13: 00007f718374033b R14: 00000000000181e3 R15: 00007ffd4c4fab30 Modules linked in: ---[ end trace 1c6f640dde0a423c ]--- RIP: 0010:__reiserfs_panic+0x167/0x170 fs/reiserfs/prints.c:390 Code: a0 5b 3b 8a 48 0f 44 c8 4c 0f 44 f0 48 c7 c7 60 5c 3b 8a 4c 89 fe 4c 89 f2 4c 8b 44 24 10 49 c7 c1 20 de 3f 96 e8 79 4e ff ff <0f> 0b 0f 1f 80 00 00 00 00 53 48 89 fb e8 d7 fe c6 f7 48 c7 c7 20 RSP: 0018:ffffc90003e4f980 EFLAGS: 00010246 RAX: 0000000000000069 RBX: 1ffff920007c9f34 RCX: cf0e7f6cb721f100 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90003e4faa0 R08: ffff8880b9033d7f R09: 1ffff110172067af R10: dffffc0000000000 R11: ffffed10172067b0 R12: ffffc90003e4f9c0 R13: dffffc0000000000 R14: ffffffff8a3ba740 R15: ffff88807e2906a8 FS: 000055558d297500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c007cce000 CR3: 000000006f63d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400