syzbot


WARNING in ctx_sched_out

Status: auto-closed as invalid on 2021/08/12 10:25
Subsystems: perf
[Documentation on labels]
Reported-by: syzbot+728b5fa8935674c320bf@syzkaller.appspotmail.com
First crash: 1112d, last: 1108d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] WARNING in ctx_sched_out 0 (1) 2021/05/17 10:35

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5748 at kernel/events/core.c:3219 ctx_sched_out+0x544/0x548 kernel/events/core.c:3219
Modules linked in:
CPU: 1 PID: 5748 Comm: syz-executor.0 Not tainted 5.12.0-rc6-syzkaller-00183-g79c338ab575e #0
Hardware name: riscv-virtio,qemu (DT)
epc : ctx_sched_out+0x544/0x548 kernel/events/core.c:3219
 ra : ctx_sched_out+0x544/0x548 kernel/events/core.c:3219
epc : ffffffe00027c604 ra : ffffffe00027c604 sp : ffffffe01e84ba90
 gp : ffffffe004588ad0 tp : ffffffe007ba2f80 t0 : ffffffc400f57234
 t1 : 0000000000000001 t2 : 0000000000000000 s0 : ffffffe01e84baf0
 s1 : ffffffe006c8dc00 a0 : ffffffe067d79118 a1 : 00000000000f0000
 a2 : ffffffd013437000 a3 : ffffffe00027c604 a4 : ffffffd01343ddb0
 a5 : 0000000000000db6 a6 : 0000000000f00000 a7 : ffffffe00027d02e
 s2 : ffffffe067d78f70 s3 : 0000000000000000 s4 : ffffffe067d79118
 s5 : 0000000000000001 s6 : ffffffe006c8dd40 s7 : 0000000000000000
 s8 : ffffffe007ba2f80 s9 : ffffffe00458c0d0 s10: 0000000000000000
 s11: 0000000000000000 t3 : dca1909648c0c800 t4 : ffffffc403d09797
 t5 : ffffffc403d09799 t6 : ffffffe00d5a321c
status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003
Call Trace:
[<ffffffe00027c604>] ctx_sched_out+0x544/0x548 kernel/events/core.c:3219
[<ffffffe00027d162>] __perf_install_in_context+0x1f4/0x47c kernel/events/core.c:2799
[<ffffffe00026b630>] remote_function kernel/events/core.c:91 [inline]
[<ffffffe00026b630>] remote_function+0xa8/0xc0 kernel/events/core.c:71
[<ffffffe0001452cc>] generic_exec_single+0x1a6/0x212 kernel/smp.c:293
[<ffffffe00014546c>] smp_call_function_single+0x134/0x2ba kernel/smp.c:513
[<ffffffe00026a8ba>] task_function_call+0x90/0xee kernel/events/core.c:119
[<ffffffe00027bf4e>] perf_install_in_context+0x174/0x2e6 kernel/events/core.c:2902
[<ffffffe000288690>] __do_sys_perf_event_open+0x10ea/0x199e kernel/events/core.c:12169
[<ffffffe00028f3e6>] sys_perf_event_open+0x34/0x46 kernel/events/core.c:11775
[<ffffffe000005578>] ret_from_syscall+0x0/0x2

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/04/14 10:24 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 79c338ab575e 3134b37f .config console log report info ci-qemu2-riscv64 WARNING in ctx_sched_out
2021/04/10 05:32 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes b2b3d18fc20e 6a81331a .config console log report info ci-qemu2-riscv64 WARNING in ctx_sched_out
* Struck through repros no longer work on HEAD.