syzbot


WARNING in iomap_page_release

Status: upstream: reported C repro on 2024/02/19 08:31
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+c0ffed3897231d71f047@syzkaller.appspotmail.com
First crash: 692d, last: 5d13h
Fix commit to backport (bisect log) :
tree: upstream
commit e9c3a8e820ed0eeb2be05072f29f80d1b79f053b
Author: Darrick J. Wong <djwong@kernel.org>
Date: Mon May 16 22:27:38 2022 +0000

  iomap: don't invalidate folios after writeback errors

  
Bug presence (2)
Date Name Commit Repro Result
2024/02/19 linux-5.15.y (ToT) 6139f2a02fe0 C [report] WARNING in iomap_page_release
2024/02/19 upstream (ToT) b401b621758e C Didn't crash
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in iomap_page_release iomap -1 1 1647d 1643d 0/29 auto-closed as invalid on 2021/09/07 21:11
Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/01/06 15:12 10m retest repro linux-5.15.y report log
2025/12/12 18:02 16m retest repro linux-5.15.y report log
2025/11/27 23:57 13m retest repro linux-5.15.y report log
2025/11/11 11:32 16m retest repro linux-5.15.y report log
2025/11/11 11:32 10m retest repro linux-5.15.y report log
2025/10/08 20:47 11m retest repro linux-5.15.y report log
2025/10/08 20:47 13m retest repro linux-5.15.y report log
2025/09/21 02:26 14m retest repro linux-5.15.y report log
2025/09/01 23:31 16m retest repro linux-5.15.y report log
2025/09/01 23:31 9m retest repro linux-5.15.y report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2024/02/20 18:41 4h24m fix candidate upstream OK (1) job log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4283 at fs/iomap/buffered-io.c:80 iomap_page_release+0x2fc/0x3a0 fs/iomap/buffered-io.c:79
Modules linked in:
CPU: 0 PID: 4283 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:iomap_page_release+0x2fc/0x3a0 fs/iomap/buffered-io.c:79
Code: 94 ff 0f 0b e9 c5 fe ff ff e8 60 f3 94 ff 0f 0b e9 01 ff ff ff e8 54 f3 94 ff 48 ff cb 49 89 de e9 45 ff ff ff e8 44 f3 94 ff <0f> 0b eb b8 44 89 e9 80 e1 07 38 c1 0f 8c 24 fe ff ff 4c 89 ef e8
RSP: 0018:ffffc900011ef8e8 EFLAGS: 00010293
RAX: ffffffff81e2d8cc RBX: ffffea0001a34c88 RCX: ffff88802bd10000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff94000346c89
R10: fffff94000346c89 R11: 1ffffd4000346c88 R12: 0000000000000001
R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000004
FS:  000055556d3d9500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c006d9a000 CR3: 0000000029d3f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_invalidatepage mm/truncate.c:157 [inline]
 truncate_cleanup_page+0x170/0x420 mm/truncate.c:176
 truncate_inode_pages_range+0x236/0xef0 mm/truncate.c:325
 evict+0x498/0x870 fs/inode.c:649
 dispose_list fs/inode.c:680 [inline]
 evict_inodes+0x604/0x690 fs/inode.c:734
 generic_shutdown_super+0x93/0x300 fs/super.c:454
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 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: 0033:0x7fe9bcb9fa77
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:00007fff28d13fd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe9bcc22d7d RCX: 00007fe9bcb9fa77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff28d14090
RBP: 00007fff28d14090 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff28d15120
R13: 00007fe9bcc22d7d R14: 00000000000135c8 R15: 00007fff28d15160
 </TASK>

Crashes (173):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/23 10:55 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/02/19 09:57 linux-5.15.y 6139f2a02fe0 578f7538 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/04/16 23:31 linux-5.15.y f7347f400572 a95239b1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/25 12:05 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/25 10:01 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/08/29 05:45 linux-5.15.y fa93fa65db6e ef3de9e8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/02/19 11:33 linux-5.15.y 6139f2a02fe0 578f7538 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2025/12/23 08:39 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/08/18 23:25 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/08/18 13:32 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/08/10 09:47 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/08/04 01:52 linux-5.15.y c79648372d02 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/07/28 22:30 linux-5.15.y c79648372d02 6654ea9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/12/24 10:13 linux-5.15.y 91786f140358 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/11/27 17:12 linux-5.15.y 0a51d2d4527b 52b38cc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/29 13:50 linux-5.15.y 74cdd62cb470 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/29 12:17 linux-5.15.y 74cdd62cb470 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/28 22:24 linux-5.15.y 74cdd62cb470 9efb3cc7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/27 23:40 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/27 00:31 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/27 00:12 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/27 00:06 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/26 22:44 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/26 22:26 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/26 22:03 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/26 10:16 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/26 10:08 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/26 06:53 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:53 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:52 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:52 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:50 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:05 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:03 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 23:03 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 22:59 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 22:57 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 22:56 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2024/10/25 22:56 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in iomap_page_release
2025/04/16 19:31 linux-5.15.y f7347f400572 a95239b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/12/26 18:04 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/27 14:40 linux-5.15.y 0a51d2d4527b 52b38cc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/11 03:43 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/08 09:52 linux-5.15.y 72244eab0dad 179b040e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/07 16:51 linux-5.15.y 72244eab0dad 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/06 23:30 linux-5.15.y 72244eab0dad df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/04 21:43 linux-5.15.y 72244eab0dad 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/03 08:20 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/03 06:04 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/02 08:50 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/11/02 08:37 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
2024/02/19 08:30 linux-5.15.y 6139f2a02fe0 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in iomap_page_release
* Struck through repros no longer work on HEAD.