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================================================================== BUG: KCSAN: data-race in get_cpu_idle_time_us / update_ts_time_stats write to 0xffff88812c020350 of 8 bytes by task 0 on cpu 0: update_ts_time_stats+0xe5/0x130 kernel/time/tick-sched.c:545 tick_nohz_stop_idle kernel/time/tick-sched.c:556 [inline] tick_nohz_irq_enter kernel/time/tick-sched.c:1276 [inline] tick_irq_enter+0x173/0x1b0 kernel/time/tick-sched.c:1295 irq_enter+0x49/0x50 kernel/softirq.c:354 entering_irq arch/x86/include/asm/apic.h:527 [inline] entering_ack_irq arch/x86/include/asm/apic.h:533 [inline] smp_apic_timer_interrupt+0x52/0x270 arch/x86/kernel/apic/apic.c:1136 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_safe_halt arch/x86/include/asm/paravirt.h:144 [inline] default_idle+0x21/0x170 arch/x86/kernel/process.c:697 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1b7/0x290 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361 rest_init+0xe4/0xeb init/main.c:667 arch_call_rest_init+0x13/0x2b start_kernel+0x7fe/0x823 init/main.c:1005 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 read to 0xffff88812c020350 of 8 bytes by task 10720 on cpu 1: get_cpu_idle_time_us+0x153/0x170 kernel/time/tick-sched.c:599 get_idle_time.isra.0+0x65/0x90 fs/proc/stat.c:53 show_stat+0x61d/0xa50 fs/proc/stat.c:172 seq_read+0x2ef/0x940 fs/seq_file.c:206 pde_read fs/proc/inode.c:292 [inline] proc_reg_read+0xb3/0x1b0 fs/proc/inode.c:302 do_loop_readv_writev fs/read_write.c:715 [inline] do_loop_readv_writev fs/read_write.c:702 [inline] do_iter_read+0x33f/0x3a0 fs/read_write.c:936 vfs_readv+0x9c/0xf0 fs/read_write.c:1054 do_preadv+0x129/0x1c0 fs/read_write.c:1146 __do_sys_preadv fs/read_write.c:1196 [inline] __se_sys_preadv fs/read_write.c:1191 [inline] __x64_sys_preadv+0x5e/0x80 fs/read_write.c:1191 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10720 Comm: syz-executor.2 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/06/06 17:57 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | e6b89e4e | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/29 10:34 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | d19ed305 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/22 00:12 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 2e44d63e | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/21 12:38 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | f20434a8 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/17 17:47 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 18397578 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/15 16:52 | https://github.com/google/ktsan.git kcsan | 40959e34d670 | 3f3c5574 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/08 16:12 | https://github.com/google/ktsan.git kcsan | 40959e34d670 | db9bcd4b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/26 22:43 | https://github.com/google/ktsan.git kcsan | 40959e34d670 | 6d25c5a0 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/18 14:12 | https://github.com/google/ktsan.git kcsan | 941e0d917bbf | 0a96a13c | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/03/08 15:14 | https://github.com/google/ktsan.git kcsan | 941e0d917bbf | 2e9971bb | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/22 02:45 | https://github.com/google/ktsan.git kcsan | 766d004d1b85 | 2ffa6679 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/20 15:32 | https://github.com/google/ktsan.git kcsan | b12d66a6c34f | 81230308 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/17 23:02 | https://github.com/google/ktsan.git kcsan | b12d66a6c34f | 72bfa6f2 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/06 02:57 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 662cf49a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/02/06 02:50 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 662cf49a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/30 01:31 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 5ed23f9a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/27 22:40 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 56cd6c9b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/01/16 01:58 | https://github.com/google/ktsan.git kcsan | 245a43005292 | f9b69507 | .config | console log | report | ci2-upstream-kcsan-gce |