INFO: rcu_tasks detected stalls on tasks: ffff8880324b4b00: .. nvcsw: 2/2 holdout: 1 idle_cpu: -1/0 task:syz.4.4387 state:R running task stack:24264 pid:16158 tgid:16157 ppid:5600 task_flags:0x400140 flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5533 [inline] __schedule+0x1259/0x6920 kernel/sched/core.c:7284 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:7606 irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:468 [inline] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x205/0xa10 kernel/entry/common.c:167 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:__local_bh_enable_ip+0xaf/0x120 kernel/softirq.c:480 Code: c2 12 65 48 63 05 f9 cd c2 12 a9 00 ff 00 ff 74 4d bf 01 00 00 00 e8 40 62 0c 00 e8 1b 4d 4a 00 fb 65 48 83 3d d9 cd c2 12 00 <74> 50 5b 5d e9 48 c5 0b 0a 65 8b 05 d5 0f c3 12 85 c0 75 99 90 0f RSP: 0018:ffffc90003f6f0d8 EFLAGS: 00000286 RAX: 0000000002fabedd RBX: fffffffffffffe01 RCX: 0000000000000040 RDX: 0000000000000000 RSI: ffffffff8e38f5e4 RDI: ffffffff8c623a80 RBP: ffffffff81af6d0f R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 000000004954cb34 R12: ffff888028d4a000 R13: 0000000000000040 R14: 0000000000001000 R15: 0000000000000000 local_bh_enable include/linux/bottom_half.h:33 [inline] fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline] kernel_fpu_end arch/x86/kernel/fpu/core.c:506 [inline] kernel_fpu_end+0x64/0x80 arch/x86/kernel/fpu/core.c:499 sha256_blocks_avx2+0x4e/0x90 lib/crypto/x86/sha256.h:31 sha256_blocks lib/crypto/x86/sha256.h:58 [inline] __sha256_update+0x188/0x1c0 lib/crypto/sha256.c:208 crypto_sha256_update+0x23/0x30 crypto/sha256.c:142 crypto_shash_finup+0x34b/0x6b0 crypto/shash.c:123 crypto_shash_update include/crypto/hash.h:998 [inline] ima_calc_file_hash_tfm+0x299/0x350 security/integrity/ima/ima_crypto.c:233 ima_calc_file_hash+0x1e3/0x380 security/integrity/ima/ima_crypto.c:280 ima_collect_measurement+0x94f/0xb30 security/integrity/ima/ima_api.c:300 process_measurement+0xdfe/0x2350 security/integrity/ima/ima_main.c:425 ima_file_check+0xc3/0x110 security/integrity/ima/ima_main.c:685 security_file_post_open+0xc4/0x210 security/security.c:2755 do_open fs/namei.c:4839 [inline] path_openat+0x5cd/0x2440 fs/namei.c:5000 do_file_open+0x20e/0x430 fs/namei.c:5029 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x12d/0x210 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1af9f9e199 RSP: 002b:00007f1afad8a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f1afa225fa0 RCX: 00007f1af9f9e199 RDX: 0000000000000000 RSI: 0000200000000100 RDI: ffffffffffffff9c RBP: 00007f1afa0350b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1afa226038 R14: 00007f1afa225fa0 R15: 00007ffc6bc26c38