syzbot


WARNING in ext4_write_inode (2)

Status: upstream: reported on 2022/02/12 00:47
Labels: ext4 (incorrect?)
Reported-by: syzbot+748cc361874fca7d33cc@syzkaller.appspotmail.com
First crash: 474d, last: 14d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] WARNING in ext4_write_inode (2) 0 (1) 2022/02/12 00:47
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in ext4_write_inode 6 1189d 1190d 0/1 auto-closed as invalid on 2020/06/22 22:10
upstream WARNING in ext4_write_inode ext4 13 1180d 1187d 17/24 fixed on 2020/05/10 10:41
linux-5.15 WARNING in ext4_write_inode 1 61d 61d 0/3 upstream: reported on 2023/03/28 10:16
linux-4.19 WARNING in ext4_write_inode 1 1189d 1189d 0/1 auto-closed as invalid on 2020/06/22 14:27
linux-6.1 WARNING in ext4_write_inode 2 61d 65d 0/3 upstream: reported on 2023/03/24 02:01

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 18182 at fs/ext4/inode.c:5325 ext4_write_inode+0x66f/0x740
Modules linked in:
CPU: 1 PID: 18182 Comm: syz-executor.1 Not tainted 6.3.0-rc6-syzkaller-00188-g3e7bb4f24617 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:ext4_write_inode+0x66f/0x740 fs/ext4/inode.c:5325
Code: fb ff ff ff 4d 85 ff 74 12 e8 0d 76 51 ff 4c 89 ff e8 05 e3 c6 ff e9 d3 fd ff ff e8 fb 75 51 ff e9 c9 fd ff ff e8 f1 75 51 ff <0f> 0b e9 bd fd ff ff e8 e5 75 51 ff e9 7e fd ff ff 44 89 f1 80 e1
RSP: 0018:ffffc9000618eec0 EFLAGS: 00010246
RAX: ffffffff823900cf RBX: 0000000000000800 RCX: 0000000000040000
RDX: ffffc9000c0ab000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000618efb0 R08: ffffffff8238fb24 R09: fffffbfff1ca6946
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880793f82b0
R13: 1ffff92000c31ddc R14: 0000000000000000 R15: 0000000000400840
FS:  00007f77fa1fe700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31b36000 CR3: 000000001ca84000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 write_inode fs/fs-writeback.c:1453 [inline]
 __writeback_single_inode+0x69b/0xfb0 fs/fs-writeback.c:1665
 writeback_single_inode+0x21b/0x790 fs/fs-writeback.c:1721
 write_inode_now+0x1d3/0x260 fs/fs-writeback.c:2757
 iput_final fs/inode.c:1735 [inline]
 iput+0x59a/0x8f0 fs/inode.c:1774
 __dentry_kill+0x436/0x650 fs/dcache.c:607
 dentry_kill+0xbb/0x290
 dput+0x1f3/0x420 fs/dcache.c:913
 ovl_destroy_inode+0x40/0xf0 fs/overlayfs/super.c:214
 destroy_inode fs/inode.c:310 [inline]
 evict+0x542/0x620 fs/inode.c:680
 __dentry_kill+0x436/0x650 fs/dcache.c:607
 shrink_dentry_list+0x39c/0x6a0 fs/dcache.c:1201
 prune_dcache_sb+0x10f/0x170 fs/dcache.c:1282
 super_cache_scan+0x340/0x480 fs/super.c:104
 do_shrink_slab+0x544/0xdb0 mm/vmscan.c:853
 shrink_slab_memcg mm/vmscan.c:922 [inline]
 shrink_slab+0x578/0x8c0 mm/vmscan.c:1001
 shrink_node_memcgs mm/vmscan.c:6439 [inline]
 shrink_node+0x1143/0x2730 mm/vmscan.c:6473
 shrink_zones mm/vmscan.c:6711 [inline]
 do_try_to_free_pages+0x67e/0x1900 mm/vmscan.c:6773
 try_to_free_mem_cgroup_pages+0x455/0xa50 mm/vmscan.c:7088
 reclaim_high+0x1e5/0x270 mm/memcontrol.c:2403
 mem_cgroup_handle_over_high+0x14a/0x2b0 mm/memcontrol.c:2588
 resume_user_mode_work include/linux/resume_user_mode.h:58 [inline]
 exit_to_user_mode_loop+0x96/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7803a8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f77fa1fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: 0000000000000000 RBX: 00007f7803bac050 RCX: 00007f7803a8c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f7803ae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb684dadf R14: 00007f77fa1fe300 R15: 0000000000022000
 </TASK>

Crashes (46):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/04/16 11:59 upstream 3e7bb4f24617 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_write_inode
2023/03/13 21:11 upstream fc89d7fb499b 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2023/03/12 19:08 upstream 134231664868 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2023/01/16 18:36 upstream 5dc4c995db9e a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_write_inode
2022/11/23 12:06 upstream eb7081409f94 75740b3f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/11/21 03:01 upstream 77c51ba552a1 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/11/05 15:26 upstream b208b9fbbcba 6d752409 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/11/05 13:25 upstream 10d916c86eca 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/11/05 01:34 upstream 64c3dd0b98f5 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_write_inode
2022/10/27 15:15 upstream 98555239e4c3 86777b7f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ext4_write_inode
2022/10/26 11:02 upstream 4dc12f37a8e9 2159e4d2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/10/25 23:44 upstream 4dc12f37a8e9 1984aebd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/10/25 08:54 upstream a970174d7a10 45645420 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/10/25 02:39 upstream 337a0a0b63f1 6134fb91 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/09/29 14:18 upstream c3e0e1e23c70 d9da3ac6 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/09/25 02:03 upstream 3db61221f4e8 0042f2b4 .config console log report info ci2-upstream-fs WARNING in ext4_write_inode
2022/09/24 19:10 upstream 3db61221f4e8 0042f2b4 .config console log report info ci2-upstream-fs WARNING in ext4_write_inode
2022/08/23 03:38 upstream 072e51356cd5 26a13b38 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/08/18 23:49 upstream 573ae4f13f63 26a13b38 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/07/27 00:12 upstream 4a57a8400075 ae971e66 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/07/19 12:49 upstream 4a57a8400075 72a3cc0c .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/03/14 22:10 upstream 09688c0166e7 9e8eaa75 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/03/05 18:31 upstream ac84e82f78cb 7bdd8b2c .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/03/01 03:37 upstream 719fce7539cd 45a13a73 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/02/25 02:09 upstream 73878e5eb1bd 7c337266 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/02/19 09:49 upstream 4f12b742eb2b 3cd800e4 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/02/11 21:04 upstream 1d41d2e82623 8b9ca619 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2023/05/13 16:25 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/13 13:46 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/07 20:28 upstream 17784de648be 90c93c40 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/02 11:13 upstream 865fdb08197e 52d40fd2 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/28 17:40 upstream 33afd4b76393 62df2017 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/28 05:33 upstream 33afd4b76393 70a605de .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/16 11:45 upstream 3e7bb4f24617 ec410564 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/13 11:17 upstream de4664485abb 82d5e53e .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/03/25 02:52 upstream e76db6e50c85 fbf0499a .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/09/19 11:19 upstream 521a547ced64 dd9a85ff .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/09/19 08:51 upstream 521a547ced64 dd9a85ff .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/09/02 05:38 upstream 42e66b1cc3a0 a805568e .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/08/31 19:00 upstream c5e4d5e99162 51e54e30 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/06/29 11:53 upstream 941e3e791269 1434eec0 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/06/21 03:30 upstream 78ca55889a54 0fc5c330 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/06/13 12:36 upstream b13baccc3850 0d5abf15 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/02/08 00:41 upstream 2ade8eef993c a7dab638 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/07/05 13:13 bpf ea1c3b77bc0b bff65f44 .config console log report info ci-upstream-bpf-kasan-gce WARNING in ext4_write_inode
* Struck through repros no longer work on HEAD.