syzbot has found a reproducer for the following issue on: HEAD commit: 46452d3786a8 Merge tag 'sound-6.0-rc8' of git://git.kernel.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=160fa19c880000 kernel config: https://syzkaller.appspot.com/x/.config?x=ba0d23aa7e1ffaf5 dashboard link: https://syzkaller.appspot.com/bug?extid=8d1d62bfb63d6a480be1 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1208f950880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14864e9c880000 Downloadable assets: disk image: https://storage.googleapis.com/a6170e8216df/disk-46452d37.raw.xz vmlinux: https://storage.googleapis.com/cbd307bfbc89/vmlinux-46452d37.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8d1d62bfb63d6a480be1@xxxxxxxxxxxxxxxxxxxxxxxxx gfs2: fsid=loop0.0: found 19 quota changes ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3609 at include/linux/backing-dev.h:246 folio_account_dirtied+0x61a/0x720 mm/page-writeback.c:2564 Modules linked in: CPU: 1 PID: 3609 Comm: syz-executor421 Not tainted 6.0.0-rc7-syzkaller-00042-g46452d3786a8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:inode_to_wb include/linux/backing-dev.h:243 [inline] RIP: 0010:folio_account_dirtied+0x61a/0x720 mm/page-writeback.c:2564 Code: ff ff e9 6e fd ff ff e8 a4 48 d1 ff 4c 89 f7 4c 89 e6 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 3b ed 2a 00 e8 86 48 d1 ff <0f> 0b 43 80 3c 3c 00 0f 85 36 fd ff ff e9 39 fd ff ff 48 c7 c1 54 RSP: 0018:ffffc90003b3f6b8 EFLAGS: 00010093 RAX: ffffffff81b640fa RBX: 0000000000000000 RCX: ffff88807c9a1d80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888012427578 R08: ffffffff81b640be R09: ffffed1002484eb0 R10: ffffed1002484eb0 R11: 1ffff11002484eaf R12: 1ffff11002484eaf R13: 0000000000000001 R14: ffffea0001f30480 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdce840000 CR3: 0000000027af8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __folio_mark_dirty+0x125/0x260 mm/page-writeback.c:2615 __set_page_dirty include/linux/pagemap.h:1057 [inline] mark_buffer_dirty+0x253/0x550 fs/buffer.c:1105 gfs2_unpin+0x10b/0xa20 fs/gfs2/lops.c:111 buf_lo_after_commit+0x172/0x1d0 fs/gfs2/lops.c:747 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0x1179/0x26a0 fs/gfs2/log.c:1107 do_sync+0xa3c/0xc80 fs/gfs2/quota.c:979 gfs2_quota_sync+0x3da/0x8b0 fs/gfs2/quota.c:1322 gfs2_sync_fs+0x49/0xb0 fs/gfs2/super.c:642 sync_filesystem+0xe8/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x300 fs/super.c:474 kill_block_super+0x79/0xd0 fs/super.c:1427 deactivate_locked_super+0xa7/0xf0 fs/super.c:332 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186 task_work_run+0x146/0x1c0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x55e/0x20a0 kernel/exit.c:795 do_group_exit+0x23b/0x2f0 kernel/exit.c:925 __do_sys_exit_group kernel/exit.c:936 [inline] __se_sys_exit_group kernel/exit.c:934 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:934 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8d10697139 Code: Unable to access opcode bytes at RIP 0x7f8d1069710f. RSP: 002b:00007ffdce83f9e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f8d10745330 RCX: 00007f8d10697139 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00005555574d02c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8d10745330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK>
