rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): ------------[ cut here ]------------ IRQs not enabled as expected WARNING: CPU: 1 PID: 9446 at kernel/sched/core.c:2675 try_invoke_on_locked_down_task+0x219/0x370 kernel/sched/core.c:2675 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9446 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200529-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x2f/0x3a kernel/panic.c:600 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] fixup_bug arch/x86/kernel/traps.c:100 [inline] do_error_trap+0x153/0x2b0 arch/x86/kernel/traps.c:197 handle_invalid_op arch/x86/kernel/traps.c:240 [inline] __exc_invalid_op arch/x86/kernel/traps.c:246 [inline] exc_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:244 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:526 RIP: 0010:try_invoke_on_locked_down_task+0x219/0x370 kernel/sched/core.c:2675 Code: 00 00 85 c9 0f 85 e4 fe ff ff 80 3d a4 d2 58 09 00 0f 85 d7 fe ff ff 48 c7 c7 00 37 4b 88 c6 05 90 d2 58 09 01 e8 c9 28 f4 ff <0f> 0b e9 bd fe ff ff 48 8d 74 24 30 48 89 ef 49 c7 c6 00 7e 03 00 RSP: 0018:ffffc90000da8c20 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 1ffff920001b5186 RCX: 0000000000000000 RDX: 0000000080010001 RSI: ffffffff815c9bf7 RDI: fffff520001b5176 RBP: ffff8880a90360c0 R08: ffff888041506580 R09: ffffed1015ce45fa R10: ffff8880ae722fcb R11: ffffed1015ce45f9 R12: ffffffff816032a0 R13: ffffc90000da8d48 R14: ffff888041506580 R15: dffffc0000000000 rcu_print_task_stall kernel/rcu/tree_stall.h:267 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:475 [inline] check_cpu_stall kernel/rcu/tree_stall.h:634 [inline] rcu_pending kernel/rcu/tree.c:3421 [inline] rcu_sched_clock_irq.cold+0x928/0xd33 kernel/rcu/tree.c:2436 update_process_times+0x25/0x60 kernel/time/timer.c:1726 tick_sched_handle.isra.0+0x91/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x50/0x140 kernel/time/tick-sched.c:1328 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x5ca/0xea0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:719 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0x207/0x260 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:576 RIP: 0010:write_comp_data+0x2e/0x80 kernel/kcov.c:218 Code: 25 00 1f 02 00 65 8b 05 b8 22 8f 7e a9 00 01 ff 00 74 10 f6 c4 01 74 5c 41 8b 80 0c 14 00 00 85 c0 74 51 41 8b 80 e8 13 00 00 <83> f8 03 75 45 49 8b 80 f0 13 00 00 45 8b 80 ec 13 00 00 4c 8b 08 RSP: 0018:ffffc90009527818 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 1ffff920012a4f06 RCX: ffffffff81c35cc9 RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000005 RBP: ffffc900095278b8 R08: ffff888041506580 R09: 0000000000000001 R10: ffffffff8c588aaf R11: fffffbfff18b1155 R12: 0000000000000001 R13: ffffffff80000000 R14: 000000005ee47096 R15: 000000003ad65c4d timestamp_truncate+0x1b9/0x2f0 fs/inode.c:2179 current_time+0x9d/0x110 fs/inode.c:2212 atime_needs_update+0x299/0x5f0 fs/inode.c:1731 touch_atime+0xce/0x230 fs/inode.c:1748 file_accessed include/linux/fs.h:2251 [inline] generic_file_splice_read+0x5d6/0x6d0 fs/splice.c:315 do_splice_to+0x10b/0x170 fs/splice.c:870 splice_direct_to_actor+0x307/0x980 fs/splice.c:950 do_splice_direct+0x1b4/0x280 fs/splice.c:1059 do_sendfile+0x555/0xc50 fs/read_write.c:1521 __do_sys_sendfile64 fs/read_write.c:1576 [inline] __se_sys_sendfile64 fs/read_write.c:1568 [inline] __x64_sys_sendfile64+0x149/0x210 fs/read_write.c:1568 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca69 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5b095adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00000000004fcec0 RCX: 000000000045ca69 RDX: 00000000200001c0 RSI: 0000000000000006 RDI: 0000000000000006 RBP: 000000000078c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008f3 R14: 00000000004cbc4a R15: 00007f5b095ae6d4 Kernel Offset: disabled Rebooting in 86400 seconds..