Hello, When using Healer to fuzz the latest Linux kernel, the following crash was triggered. HEAD commit: 0513e464f900 Merge tag 'perf-tools-fixes-for-v5.15-2021-09-27' git tree: upstream console output: https://drive.google.com/file/d/1Tqtv5Qcx5LDPwnv7b2uJS2bilqpGfipG/view?usp=sharing kernel config: https://drive.google.com/file/d/1Jqhc4DpCVE8X7d-XBdQnrMoQzifTG5ho/view?usp=sharing If you fix this issue, please add the following tag to the commit: Reported-by: Hao Sun <sunhao.th@xxxxxxxxx> ------------[ cut here ]------------ WARNING: CPU: 0 PID: 19902 at ./include/linux/backing-dev.h:286 inode_to_wb include/linux/backing-dev.h:283 [inline] WARNING: CPU: 0 PID: 19902 at ./include/linux/backing-dev.h:286 account_page_dirtied mm/page-writeback.c:2452 [inline] WARNING: CPU: 0 PID: 19902 at ./include/linux/backing-dev.h:286 __set_page_dirty+0x50b/0x6e0 mm/page-writeback.c:2500 Modules linked in: CPU: 0 PID: 19902 Comm: syz-executor Not tainted 5.15.0-rc3+ #21 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:inode_to_wb include/linux/backing-dev.h:283 [inline] RIP: 0010:account_page_dirtied mm/page-writeback.c:2452 [inline] RIP: 0010:__set_page_dirty+0x50b/0x6e0 mm/page-writeback.c:2500 Code: fc ff ff e8 d7 0a f1 ff 49 8b 87 a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 a2 42 de 02 85 c0 0f 85 18 fc ff ff e8 b5 0a f1 ff <0f> 0b e9 0c fc ff ff e8 a9 0a f1 ff 48 89 ef e8 f1 ea d8 00 48 8b RSP: 0018:ffffc90003e7bd08 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffffea000083a140 RCX: 0000000000000000 RDX: ffff88810e1b8000 RSI: ffffffff814686ab RDI: ffffffff853ccbb6 RBP: ffff88800ce0bec8 R08: 0000000000000001 R09: 0000000000000000 R10: ffffc90003e7bbb8 R11: 0000000000000003 R12: ffff8881100ecc98 R13: ffff8881045ac000 R14: 0000000000000293 R15: ffff88800ce0bec8 FS: 00007f72d08c8700(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000003 CR3: 000000001a0a6000 CR4: 0000000000750ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 PKRU: 55555554 Call Trace: mark_buffer_dirty+0x1d4/0x2b0 fs/buffer.c:1108 gfs2_unpin+0x74/0x460 fs/gfs2/lops.c:111 buf_lo_after_commit+0x6b/0x80 fs/gfs2/lops.c:750 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0x9ba/0x1050 fs/gfs2/log.c:1108 gfs2_sync_fs+0x3c/0x50 fs/gfs2/super.c:644 sync_fs_one_sb+0x40/0x50 fs/sync.c:81 iterate_supers+0xa7/0x130 fs/super.c:695 ksys_sync+0x60/0xc0 fs/sync.c:116 __do_sys_sync+0xa/0x10 fs/sync.c:125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x34/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x200008ca Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 98 4a 2a e9 2c b8 b6 4c 0f 05 <bf> 00 00 40 00 c4 a3 7b f0 c5 01 41 e2 e9 c4 22 e9 aa bb 3c 00 00 RSP: 002b:00007f72d08c7ba8 EFLAGS: 00000a83 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00000000200008ca RDX: 0000000000004c01 RSI: 0000000000000003 RDI: 0000000000400000 RBP: 00000000000000eb R08: 0000000000000005 R09: 0000000000000006 R10: 0000000000000007 R11: 0000000000000a83 R12: 000000000000000b R13: 000000000000000c R14: 000000000000000d R15: 00007ffe4f7c7800
