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================================================================== BUG: KCSAN: data-race in hrtimer_reprogram / print_cpu write to 0xffff888237d1ede0 of 8 bytes by task 4964 on cpu 1: __hrtimer_reprogram kernel/time/hrtimer.c:661 [inline] hrtimer_reprogram+0x1bd/0x230 kernel/time/hrtimer.c:868 hrtimer_start_range_ns+0x4e8/0x660 kernel/time/hrtimer.c:1302 hrtimer_start_expires include/linux/hrtimer.h:432 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1968 [inline] do_nanosleep+0x85/0x2f0 kernel/time/hrtimer.c:2044 hrtimer_nanosleep+0xe7/0x1e0 kernel/time/hrtimer.c:2100 common_nsleep+0x68/0x80 kernel/time/posix-timers.c:1350 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline] __se_sys_clock_nanosleep+0x202/0x230 kernel/time/posix-timers.c:1373 __x64_sys_clock_nanosleep+0x55/0x60 kernel/time/posix-timers.c:1373 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237d1ede0 of 8 bytes by task 7464 on cpu 0: print_cpu+0x2fb/0x640 kernel/time/timer_list.c:133 timer_list_show+0x115/0x180 kernel/time/timer_list.c:291 seq_read_iter+0x612/0x8f0 fs/seq_file.c:272 proc_reg_read_iter+0x114/0x180 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1979 [inline] copy_splice_read+0x26b/0x4b0 fs/splice.c:364 vfs_splice_read fs/splice.c:993 [inline] splice_direct_to_actor+0x28c/0x690 fs/splice.c:1069 do_splice_direct+0x10d/0x190 fs/splice.c:1194 do_sendfile+0x3b6/0x9a0 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000016257b67c80 -> 0x0000016257a0a2eb Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7464 Comm: syz-executor.5 Not tainted 6.5.0-syzkaller-11938-g65d6e954e378 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/09/06 12:48 | upstream | 65d6e954e378 | 0b6286dc | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in hrtimer_reprogram / print_cpu | ||
2023/09/01 12:09 | upstream | 99d99825fc07 | 696ea0d2 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in hrtimer_reprogram / print_cpu | ||
2023/08/27 09:17 | upstream | 3b35375f19fe | 7ba13a15 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in hrtimer_reprogram / print_cpu |