syzbot


INFO: task hung in tcx_link_attach

Status: auto-obsoleted due to no activity on 2024/09/05 20:21
Subsystems: bpf net
[Documentation on labels]
First crash: 453d, last: 435d

Sample crash report:
INFO: task syz-executor.1:14737 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00235-g8a92980606e3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:23800 pid:14737 tgid:14736 ppid:14122  flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 tcx_link_attach+0xed/0x950 kernel/bpf/tcx.c:318
 link_create+0x3a0/0x8b0 kernel/bpf/syscall.c:5279
 __sys_bpf+0x4bc/0x810 kernel/bpf/syscall.c:5758
 __do_sys_bpf kernel/bpf/syscall.c:5795 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5793 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5793
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1f45c7cf69
RSP: 002b:00007f1f46a810c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f1f45db3f80 RCX: 00007f1f45c7cf69
RDX: 0000000000000020 RSI: 0000000020000000 RDI: 000000000000001c
RBP: 00007f1f45cda6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1f45db3f80 R15: 00007ffe650c7b38
 </TASK>
INFO: task syz-executor.1:14742 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00235-g8a92980606e3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:27872 pid:14742 tgid:14736 ppid:14122  flags:0x00000006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 tcx_prog_detach+0x10f/0x6c0 kernel/bpf/tcx.c:67
 bpf_prog_detach+0x488/0x600 kernel/bpf/syscall.c:4191
 __sys_bpf+0x701/0x810 kernel/bpf/syscall.c:5700
 __do_sys_bpf kernel/bpf/syscall.c:5795 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5793 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5793
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/07 20:19 upstream 8a92980606e3 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in tcx_link_attach
2024/06/07 02:25 net d30d0e49da71 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in tcx_link_attach
2024/05/20 22:53 net b1fa60ec252f c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in tcx_link_attach
2024/05/28 22:04 net-next c30ff5f3aec3 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in tcx_link_attach
2024/05/28 21:22 net-next c30ff5f3aec3 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in tcx_link_attach
2024/06/06 07:09 linux-next ee78a17615ad 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in tcx_link_attach
2024/06/04 19:34 linux-next d97496ca23a2 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in tcx_link_attach
* Struck through repros no longer work on HEAD.