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: 0 PID: 8452 at kernel/sched/core.c:2675 try_invoke_on_locked_down_task+0x2f3/0x3d0 kernel/sched/core.c:2675 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 8452 Comm: syz-executor.1 Not tainted 5.8.0-rc1-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+0x134/0x187 lib/dump_stack.c:118 panic+0x22a/0x4e3 kernel/panic.c:231 __warn.cold.12+0x25/0x27 kernel/panic.c:600 report_bug+0x1b5/0x260 lib/bug.c:198 exc_invalid_op+0x1be/0x370 arch/x86/kernel/traps.c:235 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563 RIP: 0010:try_invoke_on_locked_down_task+0x2f3/0x3d0 kernel/sched/core.c:2675 Code: ff d0 41 89 c7 e9 07 ff ff ff 80 3d 85 2b b1 08 00 0f 85 56 fe ff ff 48 c7 c7 00 6f ca 87 c6 05 71 2b b1 08 01 e8 6c 3a f5 ff <0f> 0b e9 3c fe ff ff 4c 89 85 60 ff ff ff 48 8b b5 68 ff ff ff 4c RSP: 0018:ffffc90000007bf0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 1ffff92000000f82 RCX: 0000000000000000 RDX: 0000000000010003 RSI: 0000000000000004 RDI: ffffffff8ae10220 RBP: ffffc90000007c98 R08: ffffed1015d441fa R09: ffffed1015d441fa R10: ffff8880aea20fcb R11: ffffed1015d441f9 R12: ffff88809eaee300 R13: ffffc90000007c70 R14: ffff8880a8cd0240 R15: dffffc0000000000 rcu_print_task_stall kernel/rcu/tree_stall.h:269 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:477 [inline] check_cpu_stall kernel/rcu/tree_stall.h:636 [inline] rcu_pending kernel/rcu/tree.c:3471 [inline] rcu_sched_clock_irq.cold.89+0x93f/0xd5e kernel/rcu/tree.c:2486 update_process_times+0x23/0x50 kernel/time/timer.c:1726 tick_sched_handle.isra.18+0x6b/0x130 kernel/time/tick-sched.c:176 tick_sched_timer+0x48/0x100 kernel/time/tick-sched.c:1320 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x511/0xbf0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x14a/0x5d0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __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+0x198/0x200 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:loop2+0xaa/0x39e Code: c4 43 7b f0 f0 06 45 21 c7 41 01 f3 45 31 f5 c4 43 7b f0 e3 0d 45 31 cf c4 43 7b f0 f3 16 44 89 de 45 31 e6 c4 43 7b f0 e3 02 <44> 03 54 3c 04 09 de 45 31 e6 45 89 dc 21 c6 41 21 dc 45 01 ef 44 RSP: 0018:ffffc9000707f060 EFLAGS: 00000202 RAX: 00000000d4ac3dc6 RBX: 00000000ce1cd2ce RCX: 00000000d0f33299 RDX: 0000000093a80f3e RSI: 00000000403aba0f RDI: 0000000000000180 RBP: ffffc9000707f2f0 R08: 000000002f223c21 R09: 00000000eac0b0a4 R10: 000000004debdc53 R11: 00000000403aba0f R12: 00000000d00eae83 R13: 0000000091877c20 R14: 000000003a923cd5 R15: 00000000c3e08ca4 sha256_avx2_update+0x10/0x20 arch/x86/crypto/sha256_ssse3_glue.c:228 crypto_shash_update+0xa0/0x120 crypto/shash.c:119 ima_calc_file_hash_tfm+0x260/0x360 security/integrity/ima/ima_crypto.c:495 ima_calc_file_shash security/integrity/ima/ima_crypto.c:515 [inline] ima_calc_file_hash+0x187/0x480 security/integrity/ima/ima_crypto.c:580 ima_collect_measurement+0x3fc/0x500 security/integrity/ima/ima_api.c:250 process_measurement+0x961/0x1700 security/integrity/ima/ima_main.c:324 ima_file_check+0xc8/0x110 security/integrity/ima/ima_main.c:492 do_open fs/namei.c:3245 [inline] path_openat+0xe77/0x2700 fs/namei.c:3360 do_filp_open+0x171/0x240 fs/namei.c:3387 do_sys_openat2+0x309/0x590 fs/open.c:1179 do_sys_open+0x90/0xe0 fs/open.c:1195 ksys_open include/linux/syscalls.h:1388 [inline] __do_sys_open fs/open.c:1201 [inline] __se_sys_open fs/open.c:1199 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1199 do_syscall_64+0x64/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45a9e9 Code: Bad RIP value. RSP: 002b:00007f60d46c3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a9e9 RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000100 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f60d46c46d4 R13: 00000000004fe41f R14: 00000000004df4a8 R15: 00000000ffffffff Kernel Offset: disabled