audit: type=1800 audit(1618195256.056:10): pid=10200 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op="collect_data" cause="failed" comm="syz-executor.5" name="file0" dev="loop5" ino=3 res=0 MINIX-fs: mounting unchecked file system, running fsck is recommended MINIX-fs: mounting unchecked file system, running fsck is recommended INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=1496, c=1495, q=781) All QSes seen, last rcu_preempt kthread activity 10502 (4294958837-4294948335), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.0 R running task 23608 10213 8589 0x80080000 Call Trace: sched_show_task kernel/sched/core.c:5324 [inline] sched_show_task.cold.17+0x343/0x3a7 kernel/sched/core.c:5299 print_other_cpu_stall kernel/rcu/tree.c:1441 [inline] check_cpu_stall kernel/rcu/tree.c:1559 [inline] __rcu_pending kernel/rcu/tree.c:3244 [inline] rcu_pending kernel/rcu/tree.c:3291 [inline] rcu_check_callbacks.cold.53+0xced/0xdc6 kernel/rcu/tree.c:2646 update_process_times+0x2a/0x60 kernel/time/timer.c:1636 tick_sched_handle.isra.5+0x6b/0x130 kernel/time/tick-sched.c:164 tick_sched_timer+0x3c/0xf0 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0x2e5/0xbb0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1028 [inline] smp_apic_timer_interrupt+0x100/0x5b0 arch/x86/kernel/apic/apic.c:1053 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 RIP: 0010:memset_erms+0xb/0x10 arch/x86/lib/memset_64.S:67 Code: 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa <4c> 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01 RSP: 0018:ffff8800ad916b78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8800b60fce00 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8801c3d4c900 RBP: ffff8800ad916b80 R08: 1ffff10016014d78 R09: ffff8801c3d4c8f0 R10: ffffed00174e454a R11: ffff8800ba722a53 R12: ffff8801c3d4c888 R13: ffff8801c3d4c000 R14: 000000000000000e R15: ffffea00070f5300 setup_object mm/slub.c:1422 [inline] allocate_slab mm/slub.c:1618 [inline] new_slab+0x1d1/0x850 mm/slub.c:1656 new_slab_objects mm/slub.c:2419 [inline] ___slab_alloc+0x609/0x940 mm/slub.c:2571 __slab_alloc.isra.22+0x78/0xe0 mm/slub.c:2611 slab_alloc_node mm/slub.c:2674 [inline] slab_alloc mm/slub.c:2716 [inline] kmem_cache_alloc+0x276/0x320 mm/slub.c:2721 kmem_cache_zalloc include/linux/slab.h:697 [inline] alloc_buffer_head+0x1d/0xe0 fs/buffer.c:3349 alloc_page_buffers+0xa8/0x1e0 fs/buffer.c:825 create_empty_buffers+0x2b/0x720 fs/buffer.c:1509 create_page_buffers+0x19b/0x310 fs/buffer.c:1626 block_read_full_page+0xd0/0xbd0 fs/buffer.c:2216 minix_readpage+0x13/0x20 fs/minix/inode.c:391 read_pages+0x2b1/0x510 mm/readahead.c:131 __do_page_cache_readahead+0x353/0x580 mm/readahead.c:209 ra_submit mm/internal.h:66 [inline] ondemand_readahead+0x42a/0xb40 mm/readahead.c:483 page_cache_async_readahead mm/readahead.c:559 [inline] page_cache_async_readahead+0x20a/0x3c0 mm/readahead.c:535 generic_file_buffered_read mm/filemap.c:2100 [inline] generic_file_read_iter+0xd7d/0x2600 mm/filemap.c:2362 call_read_iter include/linux/fs.h:1787 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x443/0x870 fs/read_write.c:418 integrity_kernel_read+0x128/0x200 security/integrity/iint.c:200 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:368 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:399 [inline] ima_calc_file_hash+0x496/0x7a0 security/integrity/ima/ima_crypto.c:442 ima_collect_measurement+0x3fc/0x520 security/integrity/ima/ima_api.c:231 process_measurement+0xb25/0x14b0 security/integrity/ima/ima_main.c:284 ima_file_check+0xcf/0x120 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3406 [inline] path_openat+0xb23/0x2290 fs/namei.c:3540 do_filp_open+0x177/0x250 fs/namei.c:3574 do_sys_open+0x1dc/0x360 fs/open.c:1101 __do_sys_open fs/open.c:1119 [inline] __se_sys_open fs/open.c:1114 [inline] __x64_sys_open+0x79/0xb0 fs/open.c:1114 do_syscall_64+0xda/0x540 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff76650c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffe18796adf R14: 00007ff76650c300 R15: 0000000000022000 rcu_preempt kthread starved for 10502 jiffies! g1496 c1495 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1 RCU grace-period kthread stack dump: rcu_preempt R running task 29272 10 2 0x80080000 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x80c/0x1fc0 kernel/sched/core.c:3501 schedule+0x7f/0x1b0 kernel/sched/core.c:3545 schedule_timeout+0x398/0xd20 kernel/time/timer.c:1801 rcu_gp_kthread+0xb67/0x1f50 kernel/rcu/tree.c:2179 kthread+0x316/0x3d0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:412