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Message-ID: <0000000000006d96200611de3986@google.com>
Date: Tue, 20 Feb 2024 22:13:24 -0800
From: syzbot <syzbot+116b65a23bc791ae49a6@...kaller.appspotmail.com>
To: hverkuil-cisco@...all.nl, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org, mchehab@...nel.org,
syzkaller-bugs@...glegroups.com
Subject: [syzbot] [media?] INFO: task hung in cec_claim_log_addrs
Hello,
syzbot found the following issue on:
HEAD commit: 83d49ede4b18 Merge branch 'for-next/core' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=1719dcf8180000
kernel config: https://syzkaller.appspot.com/x/.config?x=af5c6c699e57bbb3
dashboard link: https://syzkaller.appspot.com/bug?extid=116b65a23bc791ae49a6
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16b9ffc8180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11ddc734180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/773990dc198f/disk-83d49ede.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/cf9c558cd3e8/vmlinux-83d49ede.xz
kernel image: https://storage.googleapis.com/syzbot-assets/25f87616316c/Image-83d49ede.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+116b65a23bc791ae49a6@...kaller.appspotmail.com
INFO: task syz-executor398:6279 blocked for more than 143 seconds.
Tainted: G B 6.8.0-rc5-syzkaller-g83d49ede4b18 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor398 state:D stack:0 pid:6279 tgid:6279 ppid:6193 flags:0x0000000d
Call trace:
__switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x1498/0x24b4 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xb8/0x19c kernel/sched/core.c:6817
schedule_timeout+0xb8/0x348 kernel/time/timer.c:2159
do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:148
cec_claim_log_addrs+0x164/0x210 drivers/media/cec/core/cec-adap.c:1606
__cec_s_log_addrs+0x1238/0x18d8 drivers/media/cec/core/cec-adap.c:1920
cec_adap_s_log_addrs drivers/media/cec/core/cec-api.c:184 [inline]
cec_ioctl+0x2684/0x37b0 drivers/media/cec/core/cec-api.c:528
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857
__invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
INFO: task syz-executor398:6329 blocked for more than 143 seconds.
Tainted: G B 6.8.0-rc5-syzkaller-g83d49ede4b18 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor398 state:D stack:0 pid:6329 tgid:6329 ppid:6197 flags:0x0000000d
Call trace:
__switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x1498/0x24b4 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xb8/0x19c kernel/sched/core.c:6817
schedule_timeout+0xb8/0x348 kernel/time/timer.c:2159
do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:148
cec_claim_log_addrs+0x164/0x210 drivers/media/cec/core/cec-adap.c:1606
__cec_s_log_addrs+0x1238/0x18d8 drivers/media/cec/core/cec-adap.c:1920
cec_adap_s_log_addrs drivers/media/cec/core/cec-api.c:184 [inline]
cec_ioctl+0x2684/0x37b0 drivers/media/cec/core/cec-api.c:528
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857
__invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
INFO: task syz-executor398:6367 blocked for more than 143 seconds.
Tainted: G B 6.8.0-rc5-syzkaller-g83d49ede4b18 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor398 state:D stack:0 pid:6367 tgid:6367 ppid:6196 flags:0x0000000d
Call trace:
__switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x1498/0x24b4 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xb8/0x19c kernel/sched/core.c:6817
schedule_timeout+0xb8/0x348 kernel/time/timer.c:2159
do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:148
cec_claim_log_addrs+0x164/0x210 drivers/media/cec/core/cec-adap.c:1606
__cec_s_log_addrs+0x1238/0x18d8 drivers/media/cec/core/cec-adap.c:1920
cec_adap_s_log_addrs drivers/media/cec/core/cec-api.c:184 [inline]
cec_ioctl+0x2684/0x37b0 drivers/media/cec/core/cec-api.c:528
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857
__invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
INFO: lockdep is turned off.
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
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