================================================================== BUG: KCSAN: data-race in hrtimer_interrupt / print_cpu write to 0xffff888237c1ed60 of 8 bytes by interrupt on cpu 0: hrtimer_interrupt+0x189/0x7b0 kernel/time/hrtimer.c:1806 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1115 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 should_watch kernel/kcsan/core.c:280 [inline] check_access kernel/kcsan/core.c:752 [inline] __tsan_unaligned_write1+0x154/0x180 kernel/kcsan/core.c:1022 mas_start lib/maple_tree.c:1401 [inline] mas_state_walk+0x70/0x5d0 lib/maple_tree.c:3861 mas_walk+0x7e/0x160 lib/maple_tree.c:4980 lock_vma_under_rcu+0x8d/0x2b0 mm/memory.c:5388 do_user_addr_fault arch/x86/mm/fault.c:1335 [inline] handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x160/0x650 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 read to 0xffff888237c1ed60 of 8 bytes by task 30108 on cpu 1: 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:1865 [inline] copy_splice_read+0x26b/0x4b0 fs/splice.c:367 vfs_splice_read fs/splice.c:994 [inline] splice_direct_to_actor+0x28c/0x690 fs/splice.c:1070 do_splice_direct+0x10d/0x190 fs/splice.c:1195 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: 0x000002cb10c2780d -> 0x000002cb11306180 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 30108 Comm: syz-executor.1 Tainted: G W 6.5.0-rc1-syzkaller-00033-geb26cbb1a754 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 ==================================================================