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WARNING in drm_wait_one_vblank

Status: upstream: reported C repro on 2021/05/05 14:02
Labels: dri (incorrect?)
Reported-by: syzbot+6f7fe2dbc479dca0ed17@syzkaller.appspotmail.com
First crash: 762d, last: 1d14h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in vkms_vblank_simulate (log)
Repro: C syz .config
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly dri report (May 2023) 0 (1) 2023/05/25 09:36
[syzbot] WARNING in drm_wait_one_vblank 2 (5) 2022/12/09 15:22
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in drm_wait_one_vblank origin:upstream C 3 11d 63d 0/3 upstream: reported C repro on 2023/03/31 07:06
linux-6.1 WARNING in drm_wait_one_vblank origin:upstream C 3 9d10h 58d 0/3 upstream: reported C repro on 2023/04/05 12:39
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2022/12/09 10:51 12m code@siddh.me https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master report log
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2022/06/26 10:14 20m bisect fix upstream job log (0) log

Sample crash report:
WARNING: CPU: 1 PID: 5216 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x2c0/0x510 drivers/gpu/drm/drm_vblank.c:1269
Modules linked in:

CPU: 1 PID: 5216 Comm: syz-executor371 Not tainted 6.3.0-rc4-syzkaller-00161-g62bad54b26db #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:drm_wait_one_vblank+0x2c0/0x510 drivers/gpu/drm/drm_vblank.c:1269
Code: 85 f6 0f 84 a3 01 00 00 e8 bd 5f e5 fc 4c 89 ef e8 15 a1 73 00 44 89 e1 4c 89 f2 48 c7 c7 60 d1 ba 8a 48 89 c6 e8 40 e6 ad fc <0f> 0b e9 87 fe ff ff e8 94 5f e5 fc 31 ff 4c 89 ee e8 fa 5b e5 fc
RSP: 0018:ffffc90003e4fb40 EFLAGS: 00010282

RAX: 0000000000000000 RBX: 0000000000000e7f RCX: 0000000000000000
RDX: ffff88807bf657c0 RSI: ffffffff814b5fe7 RDI: 0000000000000001
RBP: ffff88801d75c000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88801dd6b010 R14: ffff88801d9ca050 R15: ffff888146de2030
FS:  00007f65d6d03700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f65d6da703b CR3: 0000000027dc8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_fb_helper_ioctl+0x15d/0x1a0 drivers/gpu/drm/drm_fb_helper.c:1422
 do_fb_ioctl+0x31f/0x740 drivers/video/fbdev/core/fbmem.c:1188
 fb_ioctl+0xeb/0x150 drivers/video/fbdev/core/fbmem.c:1202
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856
 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: 0033:0x7f65d6d51c49
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 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:00007f65d6d032f8 EFLAGS: 00000246
 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f65d6dda4a8 RCX: 00007f65d6d51c49
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003
RBP: 00007f65d6dda4a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 3062662f7665642f
R13: 00007fff7e814f6f R14: 00007f65d6d03400 R15: 0000000000022000
 </TASK>

Crashes (281):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/03/31 15:33 upstream 62bad54b26db f325deb0 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2022/12/27 12:19 upstream 1b929c02afd3 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2022/09/17 23:56 upstream a335366bad13 dd9a85ff .config console log report syz C ci-upstream-kasan-gce-selinux-root WARNING in drm_wait_one_vblank
2022/08/20 02:37 upstream 4c2d0b039c5c 26a13b38 .config strace log report syz C ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2022/07/03 07:02 upstream 34074da5424c 1434eec0 .config strace log report syz C ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2022/05/13 21:58 upstream f3f19f939c11 107f6434 .config strace log report syz C ci-upstream-kasan-gce-selinux-root WARNING in drm_wait_one_vblank
2021/12/12 02:50 upstream 6f513529296f 49ca1f59 .config console log report syz C ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2022/08/10 09:55 linux-next 6c8f479764eb c2a623d6 .config strace log report syz C ci-upstream-linux-next-kasan-gce-root WARNING in drm_wait_one_vblank
2023/06/01 08:50 upstream 929ed21dfdb6 babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/05/27 19:01 upstream 49572d536129 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drm_wait_one_vblank
2023/05/27 11:22 upstream 91a304340a22 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/05/23 13:40 upstream ae8373a5add4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/05/19 09:11 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/05/18 04:40 upstream 1b66c114d161 3bb7af1d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in drm_wait_one_vblank
2023/05/13 01:38 upstream cc3c44c9fda2 ecca8a24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drm_wait_one_vblank
2023/05/06 18:43 upstream 2e1e1337881b 90c93c40 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in drm_wait_one_vblank
2023/05/05 06:33 upstream 3c4aa4434377 518a39a6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/04/28 01:47 upstream cec24b8b6bb8 70a605de .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/04/27 13:07 upstream 6e98b09da931 6f5b1cc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/04/22 00:45 upstream 2af3e53a4dc0 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/04/13 09:55 upstream 0bcc40255504 82d5e53e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/04/06 12:28 upstream 99ddf2254feb 08707520 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/04/02 11:36 upstream 00c7b5f4ddc5 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/03/30 16:37 upstream ffe78bbd5121 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drm_wait_one_vblank
2023/03/28 19:41 upstream 3a93e40326c8 48c74771 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/27 07:48 upstream 18940c888c85 fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drm_wait_one_vblank
2023/03/26 21:02 upstream da8e7da11e4b fbf0499a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/03/24 08:26 upstream 9fd6ba5420ba f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/03/23 13:27 upstream fff5a5e7f528 f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/03/22 05:25 upstream 2faac9a98f01 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/03/21 07:42 upstream 7d31677bb7b1 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/03/20 16:01 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/15 20:26 upstream 6015b1aca1a2 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/14 18:43 upstream fc89d7fb499b 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/14 04:26 upstream fc89d7fb499b 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/03/06 05:52 upstream f915322fe014 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/05 22:28 upstream f915322fe014 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/03/05 01:00 upstream 0988a0ea7919 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/03/04 05:47 upstream 0a3f9a6b0265 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/03 16:11 upstream 2eb29d59ddf0 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/03/03 04:57 upstream 04a357b1f6f0 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/02/26 23:39 upstream 2fcd07b7ccd5 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/02/22 21:13 upstream 5b7c4cabbb65 409945bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/02/15 23:20 upstream e1c04510f521 6be0f1f5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/02/12 15:51 upstream f339c2597ebb 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/02/08 07:09 upstream 513c1a3d3f19 15c3d445 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drm_wait_one_vblank
2023/02/06 14:09 upstream d2d11f342b17 be607b78 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/02/06 00:41 upstream 837c07cf68fe be607b78 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/02/03 13:45 upstream 66a87fff1a87 16d19e30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in drm_wait_one_vblank
2023/02/01 01:59 upstream 22b8077d0fce b68fb8d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drm_wait_one_vblank
2023/01/31 00:31 upstream 6d796c50f84c 7374c4e5 .config console log report info ci-qemu-upstream WARNING in drm_wait_one_vblank
2023/01/27 11:42 upstream 7c46948a6e9c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in drm_wait_one_vblank
2021/05/01 14:00 upstream d2b6f8a17919 77e2b668 .config console log report info ci-upstream-kasan-gce WARNING in drm_wait_one_vblank
2023/05/24 08:59 linux-next 715abedee4cd 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in drm_wait_one_vblank
2023/05/14 07:19 linux-next e922ba281a8d 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in drm_wait_one_vblank
2023/05/13 15:26 linux-next e922ba281a8d 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in drm_wait_one_vblank
2023/03/21 01:58 linux-next 73f2c2a7e1d2 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in drm_wait_one_vblank
* Struck through repros no longer work on HEAD.