------------[ cut here ]------------
WARNING: CPU: 0 PID: 5917 at include/linux/backing-dev.h:256 inode_to_wb include/linux/backing-dev.h:252 [inline]
WARNING: CPU: 0 PID: 5917 at include/linux/backing-dev.h:256 folio_account_dirtied mm/page-writeback.c:2640 [inline]
WARNING: CPU: 0 PID: 5917 at include/linux/backing-dev.h:256 __folio_mark_dirty+0x908/0x10f0 mm/page-writeback.c:2691
Modules linked in:
CPU: 0 PID: 5917 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:inode_to_wb include/linux/backing-dev.h:252 [inline]
RIP: 0010:folio_account_dirtied mm/page-writeback.c:2640 [inline]
RIP: 0010:__folio_mark_dirty+0x908/0x10f0 mm/page-writeback.c:2691
Code: e9 9c f8 ff ff e8 28 96 ce ff 0f 0b e9 e3 f8 ff ff e8 1c 96 ce ff 48 89 df 48 8b 74 24 28 e8 4f 35 2e 00 eb a6 e8 08 96 ce ff <0f> 0b e9 8e fb ff ff 89 c2 80 e2 07 80 c2 03 38 ca 0f 8c fc f8 ff
RSP: 0018:ffffc900034e6748 EFLAGS: 00010093
RAX: ffffffff81b88bf8 RBX: ffffea000094e680 RCX: ffff88802ae65a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88802007880f R09: 1ffff1100400f101
R10: dffffc0000000000 R11: ffffed100400f102 R12: 1ffff1100400f101
R13: ffff888020078690 R14: 0000000000000000 R15: ffff888020078808
FS:  0000555576727500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fecbf142000 CR3: 0000000023d64000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 mark_buffer_dirty+0x26e/0x4c0 fs/buffer.c:1212
 gfs2_unpin+0x125/0x9a0 fs/gfs2/lops.c:111
 buf_lo_after_commit+0x15e/0x1b0 fs/gfs2/lops.c:745
 lops_after_commit fs/gfs2/lops.h:51 [inline]
 gfs2_log_flush+0x10e6/0x2500 fs/gfs2/log.c:1117
 gfs2_inplace_reserve+0x1719/0x3340 fs/gfs2/rgrp.c:2188
 gfs2_iomap_begin_write fs/gfs2/bmap.c:1037 [inline]
 gfs2_iomap_begin+0xa19/0x13b0 fs/gfs2/bmap.c:1132
 iomap_iter+0x6b1/0xec0 fs/iomap/iter.c:91
 iomap_file_buffered_write+0x1f6/0xd80 fs/iomap/buffered-io.c:999
 gfs2_file_buffered_write+0x4bd/0x820 fs/gfs2/file.c:1060
 gfs2_file_write_iter+0x48d/0xe90 fs/gfs2/file.c:1158
 __kernel_write_iter+0x28c/0x690 fs/read_write.c:517
 dump_emit_page fs/coredump.c:957 [inline]
 dump_user_range+0x420/0x860 fs/coredump.c:984
 elf_core_dump+0x31d0/0x3770 fs/binfmt_elf.c:2184
 do_coredump+0x17cc/0x24d0 fs/coredump.c:833
 get_signal+0x1133/0x13f0 kernel/signal.c:2888
 arch_do_signal_or_restart+0xc2/0x800 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x9/0x30 kernel/entry/common.c:315
 exc_page_fault+0x8c/0x100 arch/x86/mm/fault.c:1519
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f319d39c821
Code: 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 48 3d 01 f0 ff ff 73 01 <c3> 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:0000000000000030 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f319d615fa0 RCX: 00007f319d39c819
RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000600
RBP: 00007f319d432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f319d615fac R14: 00007f319d615fa0 R15: 00007f319d615fa0
 </TASK>