rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-0): P5575/1:b..l P5571/1:b..l P5569/2:b..l
rcu: (detected by 0, t=10502 jiffies, g=19457, q=94 ncpus=1)
task:syz-executor382 state:R running task stack:26120 pid:5569 tgid:5569 ppid:5323 task_flags:0x400040 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7069
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:869 [inline]
RIP: 0010:is_bpf_text_address+0x1f7/0x2a0 kernel/bpf/core.c:774
Code: ff 48 8b 4c 24 08 8b 05 57 0c ae 0c 39 c8 74 0a e8 1e 6f f0 ff e9 e7 fe ff ff e8 c4 2f 48 0a 89 c3 31 ff 89 c6 e8 49 73 f0 ff <85> db 74 10 e8 50 b2 d5 ff 84 c0 74 0e e8 f7 6e f0 ff eb 56 e8 f0
RSP: 0018:ffffc9000d3e70e8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88801e444880
RDX: ffff88801e444880 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81d30787 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801e444880
R13: dffffc0000000000 R14: 0000000000000000 R15: 00007f1998b07430
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xff/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
save_stack+0xfc/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x79/0x440 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_folios+0xe6c/0x18e0 mm/page_alloc.c:2707
folios_put_refs+0x779/0x880 mm/swap.c:994
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x595/0x1820 mm/shmem.c:1112
shmem_truncate_range mm/shmem.c:1224 [inline]
shmem_evict_inode+0x29d/0xa80 mm/shmem.c:1352
evict+0x4f9/0x9b0 fs/inode.c:810
__dentry_kill+0x20d/0x630 fs/dcache.c:643
dput+0x19f/0x2b0 fs/dcache.c:885
__fput+0x60b/0x9f0 fs/file_table.c:473
fput_close_sync+0x1ef/0x270 fs/file_table.c:570
__do_sys_close fs/open.c:1581 [inline]
__se_sys_close fs/open.c:1566 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1566
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1998b07430
RSP: 002b:00007ffd3c1f6938 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1998b07430
RDX: 0000000000000000 RSI: 00007ffd3c1f6990 RDI: 0000000000000004
RBP: 00000000ffffffff R08: 0000000000004428 R09: 0000000000004424
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00007ffd3c1f69d0 R14: 0000200000000040 R15: 0000000000000004
task:syz-executor382 state:R running task stack:26560 pid:5571 tgid:5571 ppid:5324 task_flags:0x400040 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7069
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_done arch/x86/include/asm/unwind.h:50 [inline]
RIP: 0010:arch_stack_walk+0xe7/0x150 arch/x86/kernel/stacktrace.c:24
Code: 04 25 08 c0 3f 93 4c 39 e0 74 0a 49 8b 8c 24 98 18 00 00 eb 03 48 89 e9 48 8d bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 d9 ef 09 00 <83> bd 70 ff ff ff 00 74 37 48 8d 9d 70 ff ff ff 48 89 df e8 31 c6
RSP: 0018:ffffc9000d3d7180 EFLAGS: 00000286
RAX: ffffc9000d3d7210 RBX: ffffc9000d3d7270 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffc9000d3d0000 RDI: 0000000000000001
RBP: ffffc9000d3d7210 R08: ffffc9000d3d7210 R09: 0000000000000000
R10: ffffc9000d3d71d0 R11: fffff52001a7ae3c R12: ffff888000abc880
R13: ffffffff81aeea80 R14: ffffc9000d3d7260 R15: 0000000000000000
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
save_stack+0xfc/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x79/0x440 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_folios+0xe6c/0x18e0 mm/page_alloc.c:2707
folios_put_refs+0x779/0x880 mm/swap.c:994
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x595/0x1820 mm/shmem.c:1112
shmem_truncate_range mm/shmem.c:1224 [inline]
shmem_evict_inode+0x29d/0xa80 mm/shmem.c:1352
evict+0x4f9/0x9b0 fs/inode.c:810
__dentry_kill+0x20d/0x630 fs/dcache.c:643
dput+0x19f/0x2b0 fs/dcache.c:885
__fput+0x60b/0x9f0 fs/file_table.c:473
fput_close_sync+0x1ef/0x270 fs/file_table.c:570
__do_sys_close fs/open.c:1581 [inline]
__se_sys_close fs/open.c:1566 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1566
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1998b07430
RSP: 002b:00007ffd3c1f6938 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1998b07430
RDX: 0000000000000000 RSI: 00007ffd3c1f6990 RDI: 0000000000000004
RBP: 00000000ffffffff R08: 0000000000004428 R09: 0000000000004424
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00007ffd3c1f69d0 R14: 0000200000000040 R15: 0000000000000004
task:syz-executor382 state:R running task stack:26888 pid:5575 tgid:5575 ppid:5319 task_flags:0x400040 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7069
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x167/0x2f0 arch/x86/include/asm/irqflags.h:-1
Code: c7 44 24 10 00 00 00 00 9c 8f 44 24 10 f7 44 24 10 00 02 00 00 0f 85 fd 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 48 8b 45 00 <48> 3b 44 24 38 0f 85 72 01 00 00 48 83 c4 40 5b 41 5c 41 5d 41 5e
RSP: 0000:ffffc9000d537d40 EFLAGS: 00000206
RAX: 7b83d0427da5cd00 RBX: ffffffff8eb3a860 RCX: 7b83d0427da5cd00
RDX: 0000000000000001 RSI: ffffffff8e2c3e91 RDI: ffffffff8c80efe0
RBP: ffffffff933fc020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000002 R14: 0000000000000246 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
lock_vma_under_rcu+0x200/0x790 mm/memory.c:6360
do_user_addr_fault arch/x86/mm/fault.c:1328 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x17d/0x8b0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f1998ad2b86
RSP: 002b:00007ffd3c1f5fc0 EFLAGS: 00010206
RAX: 0000000000b4b001 RBX: 00007ffd3c1f6060 RCX: 0000000000000028
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007ffd3c1f6100
RBP: 0000000000000102 R08: 00007f1990600000 R09: 0000000000b4b000
R10: 0000000000000000 R11: 00007ffd3c1f6070 R12: 0000000000000001
R13: 00007f1998b556a0 R14: 0000000000000000 R15: 00007ffd3c1f6100
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g19457 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=13761
rcu: rcu_preempt kthread starved for 10502 jiffies! g19457 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28960 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5366 [inline]
__schedule+0x1b18/0x50e0 kernel/sched/core.c:6747
__schedule_loop kernel/sched/core.c:6824 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6839
schedule_timeout+0x15b/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 1311 Comm: aoe_tx0 Not tainted 6.14.0-syzkaller-03565-gf6e0150b2003 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd9/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 2b 00 74 08 4c 89 f7 e8 cd a1 0d f6 f6 44 24 21 02 75 55 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 72 9a 72 f5 65 8b 05 cb be 21 07 85 c0 74 46 48 c7 04 24 0e 36
RSP: 0018:ffffc90002aaf780 EFLAGS: 00000206
RAX: ba19377b43078e00 RBX: 1ffff92000555ef4 RCX: 0000000000000002
RDX: 0000000000000002 RSI: ffffffff8e460486 RDI: 0000000000000001
RBP: ffffc90002aaf818 R08: ffffffff903cea77 R09: 1ffffffff2079d4e
R10: dffffc0000000000 R11: fffffbfff2079d4f R12: 1ffff92000555ef0
R13: dffffc0000000000 R14: ffffc90002aaf7a0 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff88808c824000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1998b5100a CR3: 0000000043f28000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
uart_port_unlock_irqrestore include/linux/serial_core.h:786 [inline]
uart_write_room+0x3c3/0x920 drivers/tty/serial/serial_core.c:649
handle_tx+0x164/0x640 drivers/net/caif/caif_serial.c:226
__netdev_start_xmit include/linux/netdevice.h:5151 [inline]
netdev_start_xmit include/linux/netdevice.h:5160 [inline]
xmit_one net/core/dev.c:3800 [inline]
dev_hard_start_xmit+0x27a/0x7d0 net/core/dev.c:3816
__dev_queue_xmit+0x1b80/0x3f60 net/core/dev.c:4652
dev_queue_xmit include/linux/netdevice.h:3313 [inline]
tx+0x6b/0x180 drivers/block/aoe/aoenet.c:62
kthread+0x23c/0x450 drivers/block/aoe/aoecmd.c:1237
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245