================================================================== BUG: KCSAN: data-race in ktime_get_real_seconds / timekeeping_advance write to 0xffffffff88ae90c8 of 280 bytes by interrupt on cpu 1: timekeeping_advance+0x88e/0xd80 include/linux/string.h:381 update_wall_time+0x15/0x20 kernel/time/timekeeping.c:2136 tick_do_update_jiffies64+0x1e5/0x2a0 kernel/time/tick-sched.c:101 tick_sched_do_timer+0xc7/0xd0 kernel/time/tick-sched.c:147 tick_sched_timer+0x3f/0xd0 kernel/time/tick-sched.c:1313 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x271/0x600 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x226/0x490 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline] smp_apic_timer_interrupt+0xd8/0x270 arch/x86/kernel/apic/apic.c:1138 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 get_current arch/x86/include/asm/current.h:15 [inline] write_comp_data+0x9/0x70 kernel/kcov.c:207 do_syscall_64+0x9e/0x3b0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffffff88ae9138 of 8 bytes by task 13701 on cpu 0: ktime_get_real_seconds+0x1d/0x30 kernel/time/timekeeping.c:127 recently_deleted fs/ext4/ialloc.c:699 [inline] find_inode_bit.isra.0+0x1e7/0x330 fs/ext4/ialloc.c:724 __ext4_new_inode+0xd7b/0x3020 fs/ext4/ialloc.c:927 ext4_symlink+0x322/0x9e0 fs/ext4/namei.c:3295 vfs_symlink fs/namei.c:3937 [inline] vfs_symlink+0x216/0x330 fs/namei.c:3923 do_symlinkat+0x1ac/0x1e0 fs/namei.c:3964 __do_sys_symlink fs/namei.c:3983 [inline] __se_sys_symlink fs/namei.c:3981 [inline] __x64_sys_symlink+0x3c/0x50 fs/namei.c:3981 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: 0 PID: 13701 Comm: syz-executor.3 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================