loop3: detected capacity change from 0 to 8 ================================================================== BUG: KCSAN: data-race in ktime_get_real_seconds / timekeeping_inject_offset write to 0xffffffff8417d978 of 8 bytes by task 13469 on cpu 1: tk_xtime_add kernel/time/timekeeping.c:144 [inline] timekeeping_inject_offset+0x44e/0x820 kernel/time/timekeeping.c:1365 do_adjtimex+0x581/0x670 kernel/time/timekeeping.c:2406 posix_clock_realtime_adj+0x11/0x20 kernel/time/posix-timers.c:191 do_clock_adjtime kernel/time/posix-timers.c:1109 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1121 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1112 [inline] __x64_sys_clock_adjtime+0x12c/0x1b0 kernel/time/posix-timers.c:1112 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 0xffffffff8417d978 of 8 bytes by task 13464 on cpu 0: ktime_get_real_seconds+0x11/0x20 kernel/time/timekeeping.c:1008 recently_deleted fs/ext4/ialloc.c:704 [inline] find_inode_bit+0x1f9/0x330 fs/ext4/ialloc.c:729 __ext4_new_inode+0xc7a/0x2f70 fs/ext4/ialloc.c:1064 ext4_mkdir+0x28a/0x760 fs/ext4/namei.c:2921 vfs_mkdir+0x2a4/0x370 fs/namei.c:3823 do_mkdirat+0x11d/0x200 fs/namei.c:3848 __do_sys_mkdir fs/namei.c:3866 [inline] __se_sys_mkdir fs/namei.c:3864 [inline] __x64_sys_mkdir+0x32/0x40 fs/namei.c:3864 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: 0x0000000060f92525 -> 0x0000000060f92526 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 13464 Comm: syz-executor.3 Not tainted 5.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================