syzbot


WARNING in ext4_file_write_iter

Status: fixed on 2023/10/12 12:47
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+5050ad0fb47527b1808a@syzkaller.appspotmail.com
Fix commit: 194505b55dd7 ext4: drop dio overwrite only flag and associated warning
First crash: 348d, last: 245d
Cause bisection: failed (error log, bisect log)
  
Discussions (4)
Title Replies (including bot) Last reply
[PATCH v2] ext4: drop dio overwrite only flag and associated warning 1 (1) 2023/08/10 16:55
[PATCH] ext4: drop dio overwrite only flag and associated warning 3 (3) 2023/08/10 14:26
[syzbot] [ext4?] WARNING in ext4_file_write_iter 5 (8) 2023/08/10 14:17
[syzbot] Monthly ext4 report (Jul 2023) 0 (1) 2023/07/06 14:18
Last patch testing requests (2)
Created Duration User Patch Repo Result
2023/08/04 14:12 1h15m bfoster@redhat.com patch upstream OK log
2023/08/03 11:31 2h36m bfoster@redhat.com patch git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 6843306689af report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5382 at fs/ext4/file.c:611 ext4_dio_write_iter fs/ext4/file.c:611 [inline]
WARNING: CPU: 1 PID: 5382 at fs/ext4/file.c:611 ext4_file_write_iter+0x1470/0x1880 fs/ext4/file.c:720
Modules linked in:
CPU: 1 PID: 5382 Comm: syz-executor288 Not tainted 6.4.0-syzkaller-11989-g6843306689af #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:ext4_dio_write_iter fs/ext4/file.c:611 [inline]
RIP: 0010:ext4_file_write_iter+0x1470/0x1880 fs/ext4/file.c:720
Code: 84 03 00 00 48 8b 04 24 31 ff 8b 40 20 89 c3 89 44 24 10 83 e3 08 89 de e8 5d 5a 5b ff 85 db 0f 85 d5 fc ff ff e8 30 5e 5b ff <0f> 0b e9 c9 fc ff ff e8 24 5e 5b ff 48 8b 4c 24 40 4c 89 fa 4c 89
RSP: 0018:ffffc9000522fc30 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880277a3b80 RSI: ffffffff82298140 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8a832a60
R13: 0000000000000000 R14: 0000000000000000 R15: fffffffffffffff5
FS:  00007f154db95700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f154db74718 CR3: 000000006bcc7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 call_write_iter include/linux/fs.h:1871 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x981/0xda0 fs/read_write.c:584
 ksys_write+0x122/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f154dc094f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f154db952f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f154dc924f0 RCX: 00007f154dc094f9
RDX: 0000000000248800 RSI: 0000000020000000 RDI: 0000000000000006
RBP: 00007f154dc5f628 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 652e79726f6d656d
R13: 656c6c616b7a7973 R14: 6465646165726874 R15: 00007f154dc924f8
 </TASK>

Crashes (17314):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/06 06:32 net 6843306689af ba5dba36 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ext4_file_write_iter
2023/07/06 10:55 net-next 6843306689af ba5dba36 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ext4_file_write_iter
2023/08/30 23:23 upstream 6c1b980a7e79 84803932 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_file_write_iter
2023/08/29 10:59 upstream 727dbda16b83 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ext4_file_write_iter
2023/08/28 17:35 upstream 2dde18cd1d8f 7ba13a15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in ext4_file_write_iter
2023/08/27 08:57 upstream 28f20a19294d 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ext4_file_write_iter
2023/08/25 02:06 upstream b5cc3833f13a 49be837e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_file_write_iter
2023/08/18 12:02 upstream 0e8860d2125f 937e0ad7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ext4_file_write_iter
2023/08/19 17:06 upstream 4e7ffde6984a d216d8a0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_file_write_iter
2023/09/08 13:08 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 11:52 net 1b36955cc048 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 11:04 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 09:57 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 09:27 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 05:19 net 1b36955cc048 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 21:30 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 18:29 net 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 17:33 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 14:08 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 13:08 bpf 08c6d8bae48c 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 16:04 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 15:01 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 14:00 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 08:18 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 07:17 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 06:46 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 05:42 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 04:06 net-next bd6c11bc43c4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 03:49 net-next bd6c11bc43c4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 02:49 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 02:05 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 01:00 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/08 00:57 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 23:56 net-next bd6c11bc43c4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 22:35 net-next bd6c11bc43c4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 20:28 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 19:36 bpf-next 831c4b3f39c7 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 16:27 bpf-next 23d9204efed6 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 16:11 bpf-next 23d9204efed6 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 15:11 bpf-next 23d9204efed6 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce WARNING in ext4_file_write_iter
2023/09/07 15:11 net-next bd6c11bc43c4 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ext4_file_write_iter
2023/09/24 20:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/24 09:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/24 07:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/23 06:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/21 07:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/20 12:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/19 17:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/19 06:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/18 06:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/17 20:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/17 07:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/16 21:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/16 10:18 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/12 23:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/12 05:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/10 07:47 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/09/09 02:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in ext4_file_write_iter
2023/08/13 10:41 linux-next 21ef7b1e17d0 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ext4_file_write_iter
2023/06/16 08:47 linux-next f7efed9f38f8 f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ext4_file_write_iter
2023/06/13 08:15 linux-next 1f6ce8392d6f 749afb64 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ext4_file_write_iter
* Struck through repros no longer work on HEAD.