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🐞 Open [1163] 🐞 Fixed [4320] 🐞 Invalid [9662] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KCSAN: data-race in futex_wait / hrtimer_wakeup (4) | 1 | 260d | 260d | 0/24 | auto-closed as invalid on 2022/06/24 14:54 | |||
upstream | KCSAN: data-race in futex_wait / hrtimer_wakeup | 2 | 692d | 721d | 0/24 | auto-closed as invalid on 2021/05/17 11:26 | |||
upstream | KCSAN: data-race in futex_wait / hrtimer_wakeup (3) | 1 | 341d | 341d | 0/24 | auto-closed as invalid on 2022/04/04 11:03 |
================================================================== BUG: KCSAN: data-race in futex_wait / hrtimer_wakeup write to 0xffffc900006dfc18 of 8 bytes by interrupt on cpu 1: hrtimer_wakeup+0x25/0x50 kernel/time/hrtimer.c:1789 __run_hrtimer+0x160/0x480 kernel/time/hrtimer.c:1537 __hrtimer_run_queues kernel/time/hrtimer.c:1601 [inline] hrtimer_interrupt+0x380/0xaf0 kernel/time/hrtimer.c:1663 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x6f/0x1c0 arch/x86/kernel/apic/apic.c:1106 sysvec_apic_timer_interrupt+0x64/0x80 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 kcsan_setup_watchpoint+0x8b/0x3e0 kernel/kcsan/core.c:437 zap_pte_range+0x188/0xe00 mm/memory.c:1325 zap_pmd_range mm/memory.c:1481 [inline] zap_pud_range mm/memory.c:1510 [inline] zap_p4d_range mm/memory.c:1531 [inline] unmap_page_range+0x2dc/0x3d0 mm/memory.c:1552 unmap_single_vma+0x157/0x210 mm/memory.c:1597 unmap_vmas+0xc0/0x170 mm/memory.c:1629 exit_mmap+0x22d/0x460 mm/mmap.c:3201 __mmput+0x27/0x1c0 kernel/fork.c:1101 mmput+0x3d/0x50 kernel/fork.c:1122 register_for_each_vma+0x665/0x890 kernel/events/uprobes.c:1080 __uprobe_register+0x3f4/0x8a0 kernel/events/uprobes.c:1182 uprobe_register_refctr+0x29/0x40 kernel/events/uprobes.c:1204 trace_uprobe_enable kernel/trace/trace_uprobe.c:1065 [inline] probe_event_enable+0x2be/0x7d0 kernel/trace/trace_uprobe.c:1134 trace_uprobe_register+0x88/0x410 kernel/trace/trace_uprobe.c:1461 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x34e/0x790 kernel/trace/trace_event_perf.c:204 perf_uprobe_init+0xf5/0x140 kernel/trace/trace_event_perf.c:336 perf_uprobe_event_init+0xde/0x140 kernel/events/core.c:9875 perf_try_init_event+0x21a/0x400 kernel/events/core.c:11192 perf_init_event kernel/events/core.c:11256 [inline] perf_event_alloc+0xa60/0x1790 kernel/events/core.c:11547 __do_sys_perf_event_open kernel/events/core.c:12068 [inline] __se_sys_perf_event_open+0x5c7/0x27f0 kernel/events/core.c:11960 __x64_sys_perf_event_open+0x63/0x70 kernel/events/core.c:11960 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffc900006dfc18 of 8 bytes by task 6342 on cpu 0: futex_wait+0x22e/0x430 kernel/futex.c:2712 do_futex+0x9c1/0x1f10 kernel/futex.c:3730 __do_sys_futex kernel/futex.c:3807 [inline] __se_sys_futex+0xc6/0x370 kernel/futex.c:3788 __x64_sys_futex+0x74/0x80 kernel/futex.c:3788 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0xffff888130ac6000 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6342 Comm: syz-fuzzer Not tainted 5.14.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
ci2-upstream-kcsan-gce | 2021/08/15 05:47 | upstream | ba31f97d43be | 2489ab88 | .config | console log | report | info | KCSAN: data-race in futex_wait / hrtimer_wakeup |