Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc18afef08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fb7f6713d7d RCX: 00007fb7f6690a77 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc18afefc0 RBP: 00007ffc18afefc0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc18b00050 R13: 00007fb7f6713d7d R14: 000000000000edeb R15: 00007ffc18b00090 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 PID: 4184 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 panic+0x2c9/0x7f0 kernel/panic.c:309 check_panic_on_warn kernel/panic.c:229 [inline] __warn+0x248/0x2b0 kernel/panic.c:680 report_bug+0x1b7/0x2e0 lib/bug.c:199 handle_bug+0x3a/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604 RIP: 0010:inode_to_wb include/linux/backing-dev.h:285 [inline] RIP: 0010:account_page_dirtied mm/page-writeback.c:2474 [inline] RIP: 0010:__set_page_dirty+0xaf5/0xdc0 mm/page-writeback.c:2522 Code: 4f d8 ff 49 ff cf e9 5b fc ff ff e8 e5 4f d8 ff 48 ff cb e9 e4 fb ff ff e8 d8 4f d8 ff 48 ff cb e9 c4 fc ff ff e8 cb 4f d8 ff <0f> 0b 43 80 3c 3e 00 0f 85 8f f9 ff ff e9 92 f9 ff ff 89 d9 80 e1 RSP: 0018:ffffc90002f1fad8 EFLAGS: 00010093 RAX: ffffffff819f7c45 RBX: 0000000000000000 RCX: ffff8880738f3b80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffea0000a70380 R08: dffffc0000000000 R09: ffffed100399e9d7 R10: ffffed100399e9d7 R11: 1ffff1100399e9d6 R12: ffff88801ccf4d38 R13: ffff88801ccf4eb0 R14: 1ffff1100399e9d6 R15: dffffc0000000000 mark_buffer_dirty+0x2d7/0x490 fs/buffer.c:1108 gfs2_unpin+0x126/0x9a0 fs/gfs2/lops.c:111 buf_lo_after_commit+0x15a/0x1a0 fs/gfs2/lops.c:750 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0x1145/0x2610 fs/gfs2/log.c:1108 gfs2_kill_sb+0x50/0xd0 fs/gfs2/ops_fstype.c:1734 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x418/0x4d0 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: 0033:0x7fb7f6690a77 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc18afef08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fb7f6713d7d RCX: 00007fb7f6690a77 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc18afefc0 RBP: 00007ffc18afefc0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc18b00050 R13: 00007fb7f6713d7d R14: 000000000000edeb R15: 00007ffc18b00090 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess), 3 bytes skipped: 0: ff f7 push %rdi 2: d8 64 89 01 fsubs 0x1(%rcx,%rcx,4) 6: 48 83 c8 ff or $0xffffffffffffffff,%rax a: c3 ret b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 10: 31 f6 xor %esi,%esi 12: e9 09 00 00 00 jmp 0x20 17: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 1e: 00 00 20: b8 a6 00 00 00 mov $0xa6,%eax 25: 0f 05 syscall * 27: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 2d: 77 01 ja 0x30 2f: c3 ret 30: 48 c7 c2 a8 ff ff ff mov $0xffffffffffffffa8,%rdx 37: f7 d8 neg %eax 39: 64 89 02 mov %eax,%fs:(%rdx) 3c: b8 .byte 0xb8