------------[ cut here ]------------ WARNING: CPU: 0 PID: 7973 at include/linux/backing-dev.h:335 inode_to_wb include/linux/backing-dev.h:335 [inline] WARNING: CPU: 0 PID: 7973 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7973 Comm: gfs2_quotad Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 RIP: 0010:inode_to_wb include/linux/backing-dev.h:335 [inline] RIP: 0010:account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437 RSP: 0018:ffff8880958df968 EFLAGS: 00010097 RAX: ffff888096bfc6c0 RBX: ffff8880af3e4300 RCX: 1ffffffff127a6e8 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000082 RBP: ffff8880b1d703e8 R08: ffffffff8b9df268 R09: 00000000000c023b R10: ffff888096bfcfc0 R11: ffff888096bfc6c0 R12: ffffea00026b3a00 R13: ffff8880b1d70258 R14: ffff8880b1d70258 R15: ffffea00026b3a20 __set_page_dirty+0x77/0x2a0 fs/buffer.c:634 mark_buffer_dirty+0x307/0x480 fs/buffer.c:1173 gfs2_unpin+0xc7/0xeb0 fs/gfs2/lops.c:107 buf_lo_after_commit+0x12d/0x1f0 fs/gfs2/lops.c:510 lops_after_commit fs/gfs2/lops.h:64 [inline] gfs2_log_flush+0x7fc/0x1ad0 fs/gfs2/log.c:759 do_sync+0x4bb/0xba0 fs/gfs2/quota.c:958 gfs2_quota_sync+0x4f1/0x690 fs/gfs2/quota.c:1299 quotad_check_timeo fs/gfs2/quota.c:1489 [inline] quotad_check_timeo fs/gfs2/quota.c:1483 [inline] gfs2_quotad+0x23f/0x810 fs/gfs2/quota.c:1554 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Kernel Offset: disabled Rebooting in 86400 seconds..