EXT4-fs (loop7): last error at time 1778511877: ext4_iget_extra_inode:5128: inode 15
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=9fe4/1/0x4000000000000000 softirq=91810/91811 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P15536/1:b..l P15527/1:b..l
rcu: 	(detected by 0, t=10505 jiffies, g=96093, q=497 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 15533 Comm: syz.7.1742 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_is_held_type+0x3f/0x150
Code: 56 f3 87 04 00 0f 84 e4 00 00 00 65 8b 05 39 8e 90 07 85 c0 0f 85 d5 00 00 00 65 4c 8b 2d 81 48 90 07 41 83 bd 8c 0b 00 00 00 <0f> 85 bf 00 00 00 89 f5 49 89 fe 9c 41 5c fa 48 c7 c7 98 41 fc 8d
RSP: 0018:ffffc90000a08b40 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000010100
RDX: ffff88810961d880 RSI: 00000000ffffffff RDI: ffff8881bc7182c0
RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000141160 R12: ffff88810961e3f8
R13: ffff88810961d880 R14: ffff88816eb42800 R15: ffff8881bc7182f0
FS:  00007fd3b0a0a6c0(0000) GS:ffff8882a928c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000001a000 CR3: 0000000118f82000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 advance_sched+0x1c6/0xc20
 __hrtimer_run_queues+0x3c0/0xa20
 hrtimer_interrupt+0x44b/0x950
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:handle_softirqs+0x160/0x840
Code: 89 6c 24 20 0f b7 db 48 c7 c7 20 1d cb 8b e8 37 31 21 0a 65 66 c7 05 d5 5f b1 11 00 00 e8 c8 0c 46 00 fb 48 c7 c5 c0 a0 60 8e <b8> ff ff ff ff 0f bc c3 41 89 c6 41 ff c6 0f 84 09 04 00 00 89 5c
RSP: 0018:ffffc90000a08f28 EFLAGS: 00000202
RAX: 0000000000012464 RBX: 0000000000000004 RCX: 0000000080000101
RDX: 0000000000000000 RSI: ffffffff8dfaa495 RDI: ffffffff8c28b0e0
RBP: ffffffff8e60a0c0 R08: ffffffff9030b7f7 R09: 1ffffffff20616fe
R10: dffffc0000000000 R11: fffffbfff20616ff R12: 0000000000000000
R13: 0000000000000000 R14: ffff88810961d880 R15: dffffc0000000000
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:x2apic_send_IPI+0x73/0xe0
Code: 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 42 41 8b 16 0f ae f0 0f ae e8 83 fb 02 b8 00 04 00 00 0f 45 c3 b9 30 08 00 00 0f 30 <66> 90 5b 41 5c 41 5e 41 5f 5d e9 be 76 36 0a cc 89 fe 89 fd 48 c7
RSP: 0018:ffffc90004af78d0 EFLAGS: 00000206
RAX: 00000000000000fb RBX: 00000000000000fb RCX: 0000000000000830
RDX: 0000000000000000 RSI: 00000000000000fb RDI: 0000000000000000
RBP: ffffc90004af79b8 R08: ffffffff9030b7f7 R09: 1ffffffff20616fe
R10: dffffc0000000000 R11: ffffffff81746300 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881210201b0 R15: ffffffff8e269790
 __smp_call_single_queue+0x1d3/0x470
 generic_exec_single+0x191/0x430
 smp_call_function_single_async+0x79/0x110
 rdmsr_safe_on_cpu+0x165/0x2b0
 msr_read+0x150/0x250
 vfs_read+0x20c/0xa70
 ksys_read+0x150/0x270
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3afb9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd3b0a0a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fd3afe15fa0 RCX: 00007fd3afb9cdd9
RDX: 0000000000018ff8 RSI: 0000200000019680 RDI: 0000000000000006
RBP: 00007fd3afc32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3afe16038 R14: 00007fd3afe15fa0 R15: 00007ffc7a91d3f8
 </TASK>
task:syz.9.1741      state:R  running task     stack:25784 pid:15527 tgid:15524 ppid:14138  task_flags:0x40054c flags:0x00080001
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x760
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_is_watching+0x67/0xb0
Code: 89 f7 e8 dc 44 86 00 48 c7 c3 d8 79 3a 93 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d 19 66 8e 11 <74> 11 83 e0 04 c1 e8 02 5b 41 5e 41 5f c3 cc cc cc cc cc e8 41 c1
RSP: 0018:ffffc90005516c58 EFLAGS: 00000286
RAX: 00000000002eca4c RBX: ffff8881210339d8 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8c28b0c0 RDI: ffffffff8c28b080
RBP: ffffffff8176f256 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90005516e48 R11: fffff52000aa2dd5 R12: 0000000000000002
R13: ffffffff8e95cd60 R14: ffffffff8e269790 R15: dffffc0000000000
 lock_acquire+0x5f/0x350
 unwind_next_frame+0xc3/0x2550
 __unwind_start+0x5b8/0x760
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __reset_page_owner+0x71/0x1f0
 free_unref_folios+0xcec/0x1480
 folios_put_refs+0x9ff/0xb40
 shmem_undo_range+0x52c/0x1660
 shmem_evict_inode+0x289/0xae0
 evict+0x61e/0xb10
 __dentry_kill+0x1a2/0x690
 finish_dput+0xc9/0x480
 __fput+0x691/0xa60
 task_work_run+0x1d9/0x270
 do_exit+0x70f/0x22c0
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x840
 exit_to_user_mode_loop+0x8c/0x4d0
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e1fb9cdd9
RSP: 002b:00007f7e209d20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7e1fe16098 RCX: 00007f7e1fb9cdd9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7e1fe16098
RBP: 00007f7e1fe16090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7e1fe16128 R14: 00007fff82ec6e20 R15: 00007fff82ec6f08
 </TASK>
task:ext4lazyinit    state:R  running task     stack:27248 pid:15536 tgid:15536 ppid:2      task_flags:0x200040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x760
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0xaf/0x350
Code: 3d f5 38 8f 0e 00 0f 84 ce 00 00 00 65 8b 05 d8 d3 97 11 85 c0 0f 85 bf 00 00 00 65 48 8b 05 20 8e 97 11 83 b8 8c 0b 00 00 00 <0f> 85 aa 00 00 00 4c 89 74 24 10 4d 89 fe 9c 41 5f fa 48 c7 c7 98
RSP: 0018:ffffc90005527198 EFLAGS: 00000246
RAX: ffff888102739d80 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8176f273 RDI: 1ffffffff1d2b9ac
RBP: ffffffff8176f256 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc900055273b8 R11: fffff52000aa4e79 R12: 0000000000000002
R13: ffffffff8e95cd60 R14: 0000000000000000 R15: 0000000000000000
 unwind_next_frame+0xc3/0x2550
 __unwind_start+0x5b8/0x760
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __set_page_owner+0x8d/0x4c0
 post_alloc_hook+0x2a8/0x300
 get_page_from_freelist+0x2866/0x29f0
 __alloc_frozen_pages_noprof+0x194/0x380
 __alloc_pages_mpol+0x252/0x4b0
 alloc_pages_noprof+0xb3/0x2b0
 folio_alloc_noprof+0x1e/0x30
 filemap_alloc_folio_noprof+0x111/0x470
 __filemap_get_folio_mpol+0x3fc/0xb00
 ext4_mb_init_group+0x126/0xb30
 ext4_mb_prefetch_fini+0x14d/0x1e0
 ext4_lazyinit_thread+0x58a/0x1880
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: rcu_preempt kthread starved for 10505 jiffies! g96093 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27480 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1821/0x5740
 schedule+0x164/0x360
 schedule_timeout+0x158/0x2c0
 rcu_gp_fqs_loop+0x312/0x11d0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 15537 Comm: syz.7.1742 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x5c/0x70
Code: b0 16 00 00 83 fa 02 75 21 48 8b 91 b8 16 00 00 48 8b 32 48 8d 7e 01 8b 89 b4 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <c3> cc cc cc cc cc 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc900055dfad8 EFLAGS: 00000246
RAX: ffffffff81b9be66 RBX: ffff88812103c148 RCX: 0000000000080000
RDX: ffffc90008601000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900055dfc10 R08: ffffffff9030b7f7 R09: 1ffffffff20616fe
R10: dffffc0000000000 R11: ffffffff81746300 R12: 1ffff110478c8169
R13: dffffc0000000000 R14: ffff88823c640b48 R15: 0000000000000001
FS:  00007fd3b09e96c0(0000) GS:ffff88818dc8c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3d2743 CR3: 0000000118f82000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 smp_call_function_many_cond+0xfe6/0x13d0
 clock_was_set+0x70a/0x7d0
 do_settimeofday64+0x340/0x570
 __x64_sys_clock_settime+0x253/0x2a0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3afb9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd3b09e9028 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007fd3afe16090 RCX: 00007fd3afb9cdd9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007fd3afc32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3afe16128 R14: 00007fd3afe16090 R15: 00007ffc7a91d3f8
 </TASK>
