Re: [syzbot] [media?] WARNING in call_s_stream

syzbot
2024-12-15T12:12:29Z

syzbot has found a reproducer for the following issue on:

HEAD commit: 2d8308bf5b67 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=149594f8580000
kernel config: https://syzkaller.appspot.com/x/.config?x=b874549ac3d0b012
dashboard link: https://syzkaller.appspot.com/bug?extid=5bcd7c809d365e14c4df
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13ba07e8580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10bac344580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-2d8308bf.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f42110acb18e/vmlinux-2d8308bf.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d819752d1b01/bzImage-2d8308bf.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5bcd7c809d365e14c4df@syzkaller.appspotmail.com

0 pages HighMem/MovableOnly
281646 pages reserved
0 pages cma reserved
vimc vimc.0: subdev_call error Scaler
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5933 at drivers/media/v4l2-core/v4l2-subdev.c:460 call_s_stream+0x2df/0x350 drivers/media/v4l2-core/v4l2-subdev.c:460
Modules linked in:
CPU: 0 UID: 0 PID: 5933 Comm: syz-executor330 Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:call_s_stream+0x2df/0x350 drivers/media/v4l2-core/v4l2-subdev.c:460
Code: c1 ea 03 80 3c 02 00 75 75 48 8b bb 08 01 00 00 44 89 e2 48 c7 c6 00 17 4f 8c e8 bc 43 39 fe e9 54 fe ff ff e8 62 79 0e fa 90 <0f> 0b 90 e9 cb fe ff ff 4c 89 f7 e8 11 27 71 fa e9 48 fd ff ff e8
RSP: 0018:ffffc900035cfa60 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880275bf020 RCX: ffffffff878b879e
RDX: ffff8880216e0000 RSI: ffffffff878b8a1e RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880275bf198 R15: ffffffff87de3560
FS: 0000555584c4b380(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffee98411d8 CR3: 0000000034912000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
vimc_streamer_pipeline_terminate+0x218/0x320 drivers/media/test-drivers/vimc/vimc-streamer.c:62
vimc_streamer_pipeline_init drivers/media/test-drivers/vimc/vimc-streamer.c:101 [inline]
vimc_streamer_s_stream+0x650/0x9a0 drivers/media/test-drivers/vimc/vimc-streamer.c:203
vimc_capture_start_streaming+0xa1/0x130 drivers/media/test-drivers/vimc/vimc-capture.c:256
vb2_start_streaming+0x15f/0x5a0 drivers/media/common/videobuf2/videobuf2-core.c:1789
vb2_core_streamon+0x2a7/0x450 drivers/media/common/videobuf2/videobuf2-core.c:2348
vb2_streamon drivers/media/common/videobuf2/videobuf2-v4l2.c:875 [inline]
vb2_ioctl_streamon+0xf4/0x170 drivers/media/common/videobuf2/videobuf2-v4l2.c:1118
__video_do_ioctl+0xaf0/0xf00 drivers/media/v4l2-core/v4l2-ioctl.c:3122
video_usercopy+0x4d2/0x1620 drivers/media/v4l2-core/v4l2-ioctl.c:3463
v4l2_ioctl+0x1ba/0x250 drivers/media/v4l2-core/v4l2-dev.c:366
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl fs/ioctl.c:892 [inline]
__x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2b85c01b19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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:00007ffee98412d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f2b85c01b19
RDX: 0000000020000000 RSI: 0000000040045612 RDI: 0000000000000005
RBP: 00007f2b85c430f3 R08: 00007ffee9841077 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f2b85c431c6
R13: 00007ffee98412f0 R14: 00007f2b85c43014 R15: 00007f2b85c4314b
</TASK>

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