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kernel BUG in ext4_do_writepages

Status: upstream: reported C repro on 2022/12/17 20:23
Subsystems: ext4 (incorrect?)
Reported-by: syzbot+d1da16f03614058fdc48@syzkaller.appspotmail.com
First crash: 102d, last: 1d06h

Cause bisection: failed (error log, bisect log)

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2781!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2413 Comm: kworker/u4:6 Not tainted 6.3.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: writeback wb_workfn
 (flush-7:0)
RIP: 0010:ext4_do_writepages+0x3edd/0x3ee0 fs/ext4/inode.c:2780
Code: c7 50 9d 0b 8d 4c 89 f2 e8 50 0d 37 02 e9 e5 fb ff ff e8 36 70 51 ff 0f 0b e8 2f 70 51 ff 0f 0b e8 38 ba 73 08 e8 23 70 51 ff <0f> 0b 90 66 0f 1f 00 55 41 57 41 56 41 54 53 49 89 fe 49 bf 00 00
RSP: 0018:ffffc9000b71eec0 EFLAGS: 00010293

RAX: ffffffff8239d75d RBX: 0000008000000000 RCX: ffff888027748000
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000b71f230 R08: ffffffff82399f33 R09: ffffed100ed98c95
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920016e3ee6
R13: ffffc9000b71f730 R14: 0000008410000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef1ffd9c0 CR3: 000000002bf10000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_writepages+0x1e5/0x290 fs/ext4/inode.c:2964
 do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
 __writeback_single_inode+0x1b2/0x1370 fs/fs-writeback.c:1600
 writeback_sb_inodes+0x913/0x12d0 fs/fs-writeback.c:1891
 wb_writeback+0x4bf/0xed0 fs/fs-writeback.c:2065
 wb_do_writeback fs/fs-writeback.c:2208 [inline]
 wb_workfn+0x465/0x1080 fs/fs-writeback.c:2248
 process_one_work+0x90c/0x1280 kernel/workqueue.c:2390
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
 kthread+0x270/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x3edd/0x3ee0 fs/ext4/inode.c:2780
Code: c7 50 9d 0b 8d 4c 89 f2 e8 50 0d 37 02 e9 e5 fb ff ff e8 36 70 51 ff 0f 0b e8 2f 70 51 ff 0f 0b e8 38 ba 73 08 e8 23 70 51 ff <0f> 0b 90 66 0f 1f 00 55 41 57 41 56 41 54 53 49 89 fe 49 bf 00 00
RSP: 0018:ffffc9000b71eec0 EFLAGS: 00010293
RAX: ffffffff8239d75d RBX: 0000008000000000 RCX: ffff888027748000
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000b71f230 R08: ffffffff82399f33 R09: ffffed100ed98c95
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920016e3ee6
R13: ffffc9000b71f730 R14: 0000008410000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000

Crashes (54):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci2-upstream-fs 2023/03/13 14:57 upstream eeac8ede1755 026e2200 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/28 19:55 upstream ae3419fbac84 95aee97a .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2022/12/29 06:15 upstream 1b929c02afd3 44712fbc .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2022/12/18 21:17 upstream f9ff5644bcc0 05494336 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2022/12/14 00:42 upstream 02bf43c7b7f7 f6511626 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2022/12/14 00:10 upstream 764822972d64 e660de91 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci-upstream-linux-next-kasan-gce-root 2023/02/13 02:09 linux-next 38d2b86a665b 93e26d60 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci-upstream-linux-next-kasan-gce-root 2023/01/11 15:12 linux-next c9e9cdd8bdcc 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci-upstream-gce-arm64 2023/03/13 06:18 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/03/25 01:08 upstream 1e760fa3596e 9700afae .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/03/16 11:13 upstream 9c1bec9c0b08 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2023/03/13 00:00 upstream 134231664868 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-smack-root 2023/03/02 22:34 upstream 857f1268a591 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/03/02 01:40 upstream ee3f96b16468 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/27 21:35 upstream 982818426a0f 95aee97a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/20 13:49 upstream c9c3395d5e3d bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/16 04:36 upstream 033c40a89f55 6be0f1f5 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/10 09:36 upstream 38c1e0c65865 07980f9d .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/06 10:57 upstream 4ec5183ec486 be607b78 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/02/05 17:30 upstream 837c07cf68fe be607b78 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/29 11:08 upstream c96618275234 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2023/01/27 10:25 upstream 7c46948a6e9c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2023/01/26 06:51 upstream 7c46948a6e9c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2023/01/23 01:38 upstream 2475bf0250de 559a440a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/22 05:21 upstream 2241ab53cbb5 cc0f9968 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/20 14:20 upstream d368967cb103 dd15ff29 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/19 19:11 upstream 7287904c8771 66fca3ae .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/18 18:56 upstream c1649ec55708 4620c2d9 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/18 18:31 upstream c1649ec55708 4620c2d9 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-qemu-upstream 2023/01/16 02:01 upstream f0f70ddb8f3b a63719e7 .config console log report info kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-smack-root 2023/01/09 03:06 upstream 1fe4fd6f5cad 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-smack-root 2023/01/08 12:20 upstream 9b43a525db12 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-smack-root 2023/01/07 04:49 upstream a689b938df39 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-smack-root 2023/01/06 08:25 upstream 1f5abbd77e2c 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2023/01/06 08:11 upstream 1f5abbd77e2c 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/05 21:42 upstream 41c03ba9beea 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-smack-root 2023/01/05 15:37 upstream 41c03ba9beea 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2023/01/05 15:31 upstream 41c03ba9beea 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/04 08:10 upstream 69b41ac87e4a 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/04 07:44 upstream 69b41ac87e4a 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2023/01/04 00:14 upstream 69b41ac87e4a f0036e18 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2022/12/26 16:32 upstream 1b929c02afd3 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2022/12/26 12:43 upstream 1b929c02afd3 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2022/12/22 16:10 upstream 9d2f6060fe4c c692fab1 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-root 2022/12/22 15:03 upstream 9d2f6060fe4c c692fab1 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2022/12/22 12:54 upstream 0a924817d2ed 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2022/12/18 22:59 upstream f9ff5644bcc0 05494336 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2022/12/18 03:51 upstream 77856d911a8c 05494336 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci2-upstream-fs 2022/12/16 07:53 upstream 851f657a8642 6f9c033e .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2022/12/15 01:38 upstream 6f1f5caed5bf b18f0a64 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2022/12/15 00:37 upstream 6f1f5caed5bf b18f0a64 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-kasan-gce-selinux-root 2022/12/13 20:13 upstream 764822972d64 e660de91 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-linux-next-kasan-gce-root 2023/02/23 08:02 linux-next 0222aa9800b2 9e2ebb3c .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
ci-upstream-linux-next-kasan-gce-root 2023/02/14 15:58 linux-next 38d2b86a665b 1d6b4af7 .config console log report info [disk image] [vmlinux] [kernel image] kernel BUG in ext4_do_writepages
* Struck through repros no longer work on HEAD.