================================================================== BUG: KCSAN: data-race in __acct_update_integrals / vm_stat_account read to 0xffff88811c634180 of 8 bytes by interrupt on cpu 1: __acct_update_integrals+0x1b1/0x1e0 kernel/tsacct.c:137 acct_account_cputime+0x4e/0x60 kernel/tsacct.c:161 account_system_index_time+0xa2/0xb0 kernel/sched/cputime.c:175 irqtime_account_process_tick.isra.0+0x16a/0x1b0 kernel/sched/cputime.c:389 account_process_tick+0x14e/0x190 kernel/sched/cputime.c:484 update_process_times+0x29/0x80 kernel/time/timer.c:1724 tick_sched_handle+0x75/0x100 kernel/time/tick-sched.c:167 tick_sched_timer+0x58/0xe0 kernel/time/tick-sched.c:1299 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x274/0x5f0 kernel/time/hrtimer.c:1576 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1638 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 __read_once_size include/linux/compiler.h:229 [inline] check_kcov_mode kernel/kcov.c:70 [inline] write_comp_data+0x1e/0x70 kernel/kcov.c:123 __crypto_alg_lookup+0x18c/0x290 crypto/api.c:88 crypto_alg_lookup+0x67/0x180 crypto/api.c:201 crypto_larval_lookup crypto/api.c:226 [inline] crypto_alg_mod_lookup+0x8d/0x450 crypto/api.c:275 crypto_find_alg crypto/api.c:499 [inline] crypto_alloc_tfm+0x8a/0x220 crypto/api.c:532 crypto_alloc_ahash+0x36/0x50 crypto/ahash.c:562 hash_bind+0x2f/0x50 crypto/algif_hash.c:403 alg_bind+0x167/0x310 crypto/af_alg.c:180 __sys_bind+0x1df/0x220 net/socket.c:1647 __do_sys_bind net/socket.c:1658 [inline] __se_sys_bind net/socket.c:1656 [inline] __x64_sys_bind+0x4c/0x60 net/socket.c:1656 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff88811c634180 of 8 bytes by task 12491 on cpu 0: vm_stat_account+0x45/0x150 mm/mmap.c:3324 mprotect_fixup+0x31f/0x510 mm/mprotect.c:440 do_mprotect_pkey+0x3eb/0x660 mm/mprotect.c:553 __do_sys_mprotect mm/mprotect.c:578 [inline] __se_sys_mprotect mm/mprotect.c:575 [inline] __x64_sys_mprotect+0x51/0x70 mm/mprotect.c:575 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 12491 Comm: syz-executor.3 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================