================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats_delayed / tick_do_update_jiffies64 read-write to 0xffffffff85c079c0 of 8 bytes by interrupt on cpu 1: tick_do_update_jiffies64+0x112/0x1b0 kernel/time/tick-sched.c:118 tick_sched_do_timer kernel/time/tick-sched.c:199 [inline] tick_sched_timer+0x7e/0x2d0 kernel/time/tick-sched.c:1473 __run_hrtimer+0x132/0x420 kernel/time/hrtimer.c:1685 __hrtimer_run_queues kernel/time/hrtimer.c:1749 [inline] hrtimer_interrupt+0x36e/0xa70 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 __sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196 mm_account_fault mm/memory.c:5114 [inline] handle_mm_fault+0x7a9/0xa90 mm/memory.c:5165 do_user_addr_fault+0x4a1/0x980 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1488 [inline] exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1544 asm_exc_page_fault+0x22/0x30 fault_in_readable+0x115/0x1a0 fault_in_iov_iter_readable+0x86/0x1b0 lib/iov_iter.c:353 generic_perform_write+0x116/0x3f0 mm/filemap.c:3728 ext4_buffered_write_iter+0x235/0x3e0 fs/ext4/file.c:270 ext4_file_write_iter+0x2e3/0x1210 call_write_iter include/linux/fs.h:2187 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x468/0x760 fs/read_write.c:578 ksys_write+0xe8/0x1a0 fs/read_write.c:631 __do_sys_write fs/read_write.c:643 [inline] __se_sys_write fs/read_write.c:640 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:640 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffffffff85c079c0 of 8 bytes by task 10461 on cpu 0: mem_cgroup_flush_stats_delayed+0x34/0x140 mm/memcontrol.c:662 workingset_refault+0x3c3/0x820 mm/workingset.c:358 filemap_add_folio+0xe2/0x150 mm/filemap.c:947 page_cache_ra_unbounded+0x19e/0x2e0 mm/readahead.c:245 do_page_cache_ra mm/readahead.c:293 [inline] page_cache_ra_order mm/readahead.c:550 [inline] ondemand_readahead+0x5df/0x780 mm/readahead.c:672 page_cache_async_ra+0x8b/0xa0 mm/readahead.c:721 filemap_readahead mm/filemap.c:2542 [inline] filemap_get_pages mm/filemap.c:2582 [inline] filemap_read+0x4ff/0x1430 mm/filemap.c:2660 generic_file_read_iter+0x72/0x320 mm/filemap.c:2806 ext4_file_read_iter+0x1e9/0x2a0 do_iter_read+0x492/0x760 fs/read_write.c:790 vfs_readv fs/read_write.c:910 [inline] do_preadv+0x159/0x230 fs/read_write.c:1002 __do_sys_preadv fs/read_write.c:1052 [inline] __se_sys_preadv fs/read_write.c:1047 [inline] __x64_sys_preadv+0x54/0x60 fs/read_write.c:1047 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x000000010001137d -> 0x000000010001137e Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 10461 Comm: syz-executor.4 Not tainted 6.0.0-rc6-syzkaller-00286-ga63f2e7cb110-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 ==================================================================