syzbot


KCSAN: data-race in cpuidle_not_available / cpuidle_pause

Status: auto-closed as invalid on 2021/07/30 22:27
Subsystems: pm
[Documentation on labels]
First crash: 1036d, last: 1006d

Sample crash report:
==================================================================
BUG: KCSAN: data-race in cpuidle_not_available / cpuidle_pause

write to 0xffffffff83cc07ec of 1 bytes by task 30161 on cpu 0:
 cpuidle_uninstall_idle_handler drivers/cpuidle/cpuidle.c:441 [inline]
 cpuidle_pause+0x42/0x70 drivers/cpuidle/cpuidle.c:478
 dpm_suspend_noirq+0xe/0x80 drivers/base/power/main.c:1342
 suspend_enter+0x144/0x8f0 kernel/power/suspend.c:408
 suspend_devices_and_enter+0x1cb/0x500 kernel/power/suspend.c:505
 enter_state+0x274/0x530 kernel/power/suspend.c:586
 pm_suspend+0x4b/0x130 kernel/power/suspend.c:613
 state_store+0x1f2/0x210 kernel/power/main.c:658
 kobj_attr_store+0x40/0x60 lib/kobject.c:856
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x1d3/0x2d0 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2114 [inline]
 do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740
 do_iter_write+0x112/0x4c0 fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 fs/read_write.c:907
 iter_file_splice_write+0x40a/0x750 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x773/0xda0 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1319 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xa9/0x130 fs/read_write.c:1311
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffffff83cc07ec of 1 bytes by task 0 on cpu 1:
 cpuidle_not_available+0x41/0x90 drivers/cpuidle/cpuidle.c:52
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0xce/0x240 kernel/sched/idle.c:306
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403
 secondary_startup_64_no_verify+0xb0/0xbb

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.13.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock
kvm-clock: cpu 1, msr 4506041, secondary cpu clock

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/06/25 22:21 upstream 44db63d1ad8d ae6bf8dd .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/21 04:02 upstream cba5e97280f5 aba2b2fb .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/17 11:59 upstream 70585216fe77 aba2b2fb .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/15 23:27 upstream 94f0b2d4a1d0 990d3cbe .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/15 05:19 upstream 009c9aa5be65 1ba81399 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/08 11:38 upstream 614124bea77e 5c2fe346 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/06 15:45 upstream f5b6eb1e0182 500c2339 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/04 22:17 upstream 16f0596fc1d7 500c2339 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/06/01 18:58 upstream c2131f7e73c9 032639db .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/05/28 06:22 upstream 97e5bf604b7a 858ea628 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
2021/05/27 07:24 upstream 7ac3a1c1ae51 858ea628 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in cpuidle_not_available / cpuidle_pause
* Struck through repros no longer work on HEAD.