------------[ cut here ]------------ kernel BUG at fs/reiserfs/journal.c:1916! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9646 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:do_journal_release+0x4e2/0x4f0 fs/reiserfs/journal.c:1916 Code: b8 ff e9 a8 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 06 fd ff ff 4c 89 ff e8 28 3a b8 ff e9 f9 fc ff ff e8 3e 4f 67 ff <0f> 0b e8 37 4f 67 ff 0f 0b 0f 1f 44 00 00 41 57 41 56 53 48 89 f3 RSP: 0018:ffffc90004a57b00 EFLAGS: 00010293 RAX: ffffffff821b2332 RBX: 1ffff9200094af64 RCX: ffff88807c495940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004a57bf8 R08: ffffc90004a57b77 R09: ffffc90004a57b40 R10: dffffc0000000000 R11: fffff5200094af6f R12: ffffc90005a5a000 R13: dffffc0000000000 R14: ffff88801d2f6678 R15: 0000000000000000 FS: 0000555579a1f500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9fce429fe8 CR3: 0000000061f46000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: journal_release+0x1b/0x30 fs/reiserfs/journal.c:1971 reiserfs_put_super+0x267/0x510 fs/reiserfs/super.c:616 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f91f719c117 Code: a2 c7 05 7c 94 24 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:00007ffe177ef278 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f91f720471f RCX: 00007f91f719c117 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe177ef330 RBP: 00007ffe177ef330 R08: 00007ffe177f0330 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe177f03c0 R13: 00007f91f720471f R14: 00000000000cf88c R15: 00007ffe177f0400 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_journal_release+0x4e2/0x4f0 fs/reiserfs/journal.c:1916 Code: b8 ff e9 a8 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 06 fd ff ff 4c 89 ff e8 28 3a b8 ff e9 f9 fc ff ff e8 3e 4f 67 ff <0f> 0b e8 37 4f 67 ff 0f 0b 0f 1f 44 00 00 41 57 41 56 53 48 89 f3 RSP: 0018:ffffc90004a57b00 EFLAGS: 00010293 RAX: ffffffff821b2332 RBX: 1ffff9200094af64 RCX: ffff88807c495940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004a57bf8 R08: ffffc90004a57b77 R09: ffffc90004a57b40 R10: dffffc0000000000 R11: fffff5200094af6f R12: ffffc90005a5a000 R13: dffffc0000000000 R14: ffff88801d2f6678 R15: 0000000000000000 FS: 0000555579a1f500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3001eff8 CR3: 0000000061f46000 CR4: 00000000003506f0