------------[ cut here ]------------ kernel BUG at fs/reiserfs/journal.c:1449! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4509 Comm: syz-executor.0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:flush_journal_list+0x1b58/0x1ba0 fs/reiserfs/journal.c:1449 Code: 48 89 d3 e8 8a 11 bc ff 48 89 da e9 59 f4 ff ff e8 cd 05 77 ff 0f 0b e8 c6 05 77 ff 0f 0b e8 bf 05 77 ff 0f 0b e8 b8 05 77 ff <0f> 0b e8 b1 05 77 ff 0f 0b e8 aa 05 77 ff 0f 0b e8 a3 05 77 ff 0f RSP: 0018:ffffc9000313f820 EFLAGS: 00010293 RAX: ffffffff82021b18 RBX: 0000000000000001 RCX: ffff888026bb1dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888074740e80 R08: ffff888074740e87 R09: 1ffff1100e8e81d0 R10: dffffc0000000000 R11: ffffed100e8e81d1 R12: 0000000000000000 R13: ffffc90002f030d8 R14: 1ffff1100e8e81d0 R15: 1ffff920005e061d FS: 0000555576c9b480(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc43621ff8 CR3: 0000000023e5f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: flush_older_journal_lists fs/reiserfs/journal.c:1315 [inline] flush_journal_list+0xdea/0x1ba0 fs/reiserfs/journal.c:1572 do_journal_end+0x2f1c/0x42d0 fs/reiserfs/journal.c:4301 do_journal_release+0x497/0x4f0 fs/reiserfs/journal.c:1937 journal_release+0x1b/0x30 fs/reiserfs/journal.c:1968 reiserfs_put_super+0x267/0x510 fs/reiserfs/super.c:616 generic_shutdown_super+0x130/0x300 fs/super.c:475 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: 0033:0x7f969e4c7757 Code: a2 c7 05 a8 77 11 00 00 00 00 00 eb 96 e8 f1 09 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 d0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc436226c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f969e5273ef RCX: 00007f969e4c7757 RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc43622780 RBP: 00007ffc43622780 R08: 00007ffc43623780 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc43623840 R13: 00007f969e5273ef R14: 00000000000134a5 R15: 0000000000000005 Modules linked in: ---[ end trace fd6d9f1f7bee572a ]--- RIP: 0010:flush_journal_list+0x1b58/0x1ba0 fs/reiserfs/journal.c:1449 Code: 48 89 d3 e8 8a 11 bc ff 48 89 da e9 59 f4 ff ff e8 cd 05 77 ff 0f 0b e8 c6 05 77 ff 0f 0b e8 bf 05 77 ff 0f 0b e8 b8 05 77 ff <0f> 0b e8 b1 05 77 ff 0f 0b e8 aa 05 77 ff 0f 0b e8 a3 05 77 ff 0f RSP: 0018:ffffc9000313f820 EFLAGS: 00010293 RAX: ffffffff82021b18 RBX: 0000000000000001 RCX: ffff888026bb1dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888074740e80 R08: ffff888074740e87 R09: 1ffff1100e8e81d0 R10: dffffc0000000000 R11: ffffed100e8e81d1 R12: 0000000000000000 R13: ffffc90002f030d8 R14: 1ffff1100e8e81d0 R15: 1ffff920005e061d FS: 0000555576c9b480(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055ea9f0c9138 CR3: 0000000023e5f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400