================================================================== BUG: KCSAN: data-race in __mod_timer / expire_timers write to 0xffff88813bd1bd88 of 8 bytes by interrupt on cpu 1: expire_timers+0x11e/0x260 kernel/time/timer.c:1463 __run_timers+0x338/0x3d0 kernel/time/timer.c:1731 run_timer_softirq+0x19/0x30 kernel/time/timer.c:1744 __do_softirq+0x13c/0x2c3 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x32/0x40 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu+0xb4/0xc0 kernel/softirq.c:420 sysvec_apic_timer_interrupt+0x74/0x90 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 syslog_print kernel/printk/printk.c:1455 [inline] do_syslog+0x12c1/0x1400 kernel/printk/printk.c:1568 kmsg_read+0x7a/0xa0 fs/proc/kmsg.c:40 pde_read fs/proc/inode.c:321 [inline] proc_reg_read+0xe1/0x1b0 fs/proc/inode.c:331 vfs_read+0x154/0x5c0 fs/read_write.c:494 ksys_read+0xce/0x180 fs/read_write.c:634 __do_sys_read fs/read_write.c:644 [inline] __se_sys_read fs/read_write.c:642 [inline] __x64_sys_read+0x3e/0x50 fs/read_write.c:642 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88813bd1bd88 of 8 bytes by task 15593 on cpu 0: __mod_timer+0x442/0xbf0 kernel/time/timer.c:1035 add_timer+0x38/0x50 kernel/time/timer.c:1142 __queue_delayed_work+0xec/0x150 kernel/workqueue.c:1655 queue_delayed_work_on+0x78/0xc0 kernel/workqueue.c:1680 queue_delayed_work include/linux/workqueue.h:522 [inline] bond_alb_monitor+0xb6f/0xbc0 drivers/net/bonding/bond_alb.c:1621 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x635/0xb90 kernel/workqueue.c:2421 kthread+0x1fd/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15593 Comm: kworker/u4:9 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bond2 bond_alb_monitor ==================================================================