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kernel BUG at fs/gfs2/super.c:76!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 10749 Comm: syz.6.5248 Not tainted 6.17.0-rc1-syzkaller-00224-g8d561baae505 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:gfs2_jindex_free+0x43e/0x440 fs/gfs2/super.c:76
Code: b3 a7 13 fd cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ea fd ff ff e8 22 7b 26 fe e9 e0 fd ff ff e8 78 cd 7c 07 e8 03 11 c3 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00
RSP: 0018:ffffc9000ce8f800 EFLAGS: 00010293
RAX: ffffffff83fc997d RBX: dead000000000122 RCX: ffff88802a223c00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc9000ce8f8c0 R08: ffff888066cacd4f R09: 1ffff1100cd959a9
R10: dffffc0000000000 R11: ffffed100cd959aa R12: ffff888066cac818
R13: dffffc0000000000 R14: ffff88805afa2300 R15: ffff88805afa2378
FS:  0000000000000000(0000) GS:ffff888125d1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1fdd6c000 CR3: 000000000df36000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_put_super+0x8af/0x950 fs/gfs2/super.c:636
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1766
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1378
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6b5/0x2300 kernel/exit.c:961
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
 get_signal+0x1286/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f519d1c14a5
Code: Unable to access opcode bytes at 0x7f519d1c147b.
RSP: 002b:00007f519dfb2f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f519d3b5fa0 RCX: 00007f519d1c14a5
RDX: 00007f519dfb2fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f519d211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f519d3b6038 R14: 00007f519d3b5fa0 R15: 00007ffc7c2c2e58
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_jindex_free+0x43e/0x440 fs/gfs2/super.c:76
Code: b3 a7 13 fd cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ea fd ff ff e8 22 7b 26 fe e9 e0 fd ff ff e8 78 cd 7c 07 e8 03 11 c3 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00
RSP: 0018:ffffc9000ce8f800 EFLAGS: 00010293
RAX: ffffffff83fc997d RBX: dead000000000122 RCX: ffff88802a223c00
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc9000ce8f8c0 R08: ffff888066cacd4f R09: 1ffff1100cd959a9
R10: dffffc0000000000 R11: ffffed100cd959aa R12: ffff888066cac818
R13: dffffc0000000000 R14: ffff88805afa2300 R15: ffff88805afa2378
FS:  0000000000000000(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000146030 CR3: 000000007b9c2000 CR4: 0000000000350ef0