rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P10692/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=57985, q=361 ncpus=2)
task:syz-executor.1 state:R running task stack:27152 pid:10692 tgid:10691 ppid:8639 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 4a aa 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900035ff870 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920006bff10 RCX: 00000000cf9d8e9b
RDX: 0000000000000001 RSI: ffffffff8b2cae60 RDI: ffffffff8b8feec0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284e250
R10: ffffffff94271287 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb1760 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
filemap_get_entry+0xdb/0x470 mm/filemap.c:1837
shmem_get_folio_gfp+0x369/0x13d0 mm/shmem.c:1982
shmem_get_folio mm/shmem.c:2160 [inline]
shmem_write_begin+0x15a/0x360 mm/shmem.c:2743
generic_perform_write+0x272/0x620 mm/filemap.c:4015
shmem_file_write_iter+0x114/0x140 mm/shmem.c:2919
call_write_iter include/linux/fs.h:2114 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0x6b6/0x1140 fs/read_write.c:590
ksys_write+0x12f/0x260 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fda9227bc2f
RSP: 002b:00007fda93094e80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007fda9227bc2f
RDX: 0000000001000000 RSI: 00007fda88000000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000972d
R10: 0000000000000002 R11: 0000000000000293 R12: 0000000000000003
R13: 00007fda93094f80 R14: 00007fda93094f40 R15: 00007fda88000000
rcu: rcu_preempt kthread starved for 10535 jiffies! g57985 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:27584 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1093 Comm: kworker/u8:7 Not tainted 6.9.0-syzkaller-10323-g8f6a15f095a6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__lock_acquire+0xec2/0x3b30 kernel/locking/lockdep.c:5107
Code: 64 f2 ff ff 48 63 5c 24 20 be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 12 27 94 e8 16 3c 7e 00 48 0f a3 1d ee 73 bb 12 <0f> 82 12 fb ff ff 90 e8 52 12 15 03 85 c0 74 3c 48 c7 c0 94 78 e4
RSP: 0018:ffffc90005336e70 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816b9e8a
RDX: fffffbfff284e251 RSI: 0000000000000008 RDI: ffffffff94271280
RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff284e250
R10: ffffffff94271287 R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888023134780 R15: 0000000000000080
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5849871f00 CR3: 000000007bb68000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
debug_objects_fill_pool lib/debugobjects.c:614 [inline]
debug_object_activate+0x14c/0x540 lib/debugobjects.c:704
debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
kvfree_call_rcu+0x30/0xbe0 kernel/rcu/tree.c:3772
cfg80211_update_known_bss+0x39f/0x1150 net/wireless/scan.c:1847
__cfg80211_bss_update+0x1aa/0x24c0 net/wireless/scan.c:1893
cfg80211_inform_single_bss_data+0x758/0x1f70 net/wireless/scan.c:2273
cfg80211_inform_bss_data+0x205/0x39d0 net/wireless/scan.c:3101
cfg80211_inform_bss_frame_data+0x271/0x7c0 net/wireless/scan.c:3191
ieee80211_bss_info_update+0x311/0xab0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1099 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1578 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1898/0x2f40 net/mac80211/ibss.c:1605
ieee80211_iface_process_skb net/mac80211/iface.c:1605 [inline]
ieee80211_iface_work+0xc07/0xf00 net/mac80211/iface.c:1659
cfg80211_wiphy_work+0x255/0x330 net/wireless/core.c:437
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244