rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4671/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=11013, q=578 ncpus=2)
task:udevd state:R running task stack:22240 pid:4671 tgid:4671 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
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:seqcount_lockdep_reader_access+0x1d6/0x220 include/linux/seqlock.h:75
Code: 62 e8 9e d9 86 ff 4d 85 f6 48 bb 00 00 00 00 00 fc ff df 75 07 e8 8a d9 86 ff eb 06 e8 83 d9 86 ff fb 48 c7 04 24 0e 36 e0 45 <4a> c7 04 23 00 00 00 00 66 42 c7 44 23 09 00 00 42 c6 44 23 0b 00
RSP: 0018:ffffc900038277c0 EFLAGS: 00000293
RAX: ffffffff820c9d5d RBX: dffffc0000000000 RCX: ffff88807e991e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003827868 R08: ffffffff820c9d38 R09: 1ffffffff1fed365
R10: dffffc0000000000 R11: fffffbfff1fed366 R12: 1ffff92000704ef8
R13: ffffc900038277e0 R14: 0000000000000200 R15: 0000000000000046
set_root+0x176/0x3c0 fs/namei.c:954
nd_jump_root+0x2a6/0x420 fs/namei.c:975
path_init+0x3cd/0x1360 fs/namei.c:2468
path_lookupat+0x27/0x450 fs/namei.c:2556
filename_lookup+0x256/0x610 fs/namei.c:2595
vfs_statx+0x103/0x490 fs/stat.c:312
vfs_fstatat+0x145/0x190 fs/stat.c:341
__do_sys_newfstatat fs/stat.c:505 [inline]
__se_sys_newfstatat fs/stat.c:499 [inline]
__x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:499
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f2f9565f4
RSP: 002b:00007ffe50c5f9a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055be25e68760 RCX: 00007f4f2f9565f4
RDX: 00007ffe50c5f9b8 RSI: 00007ffe50c5fe48 RDI: 00000000ffffff9c
RBP: 00007ffe50c5fa48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe50c5fe48
R13: 00007ffe50c5f9b8 R14: 000055be25e40910 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10528 jiffies! g11013 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-rc2-syzkaller-00111-gee9a43b7cfe2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:99 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
RIP: 0010:unwind_next_frame+0x549/0x2a00 arch/x86/kernel/unwind_orc.c:494
Code: 4c 0f 47 e0 4c 0f 46 fb 4d 39 e5 77 1d e8 5f 5a 52 00 eb 96 89 d9 80 e1 07 80 c1 03 38 c1 7c c0 48 89 df e8 99 7a b6 00 eb b6 42 5a 52 00 4c 2b 7c 24 28 4c 89 fb 49 bd 00 00 00 00 00 fc ff
RSP: 0018:ffffc90000a17a08 EFLAGS: 00000212
RAX: ffffffff906be708 RBX: ffffffff906be70c RCX: ffff888017af0000
RDX: 0000000000000100 RSI: ffffffff8b193156 RDI: ffffffff8b1928b8
RBP: ffffffff8b1928b8 R08: ffffffff81411c60 R09: ffffc90000a17bd0
R10: 0000000000000003 R11: ffffffff817f1d20 R12: ffffffff906be70c
R13: ffffffff906be710 R14: ffffffff8b193156 R15: ffffffff906be70c
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc2761aeec CR3: 000000002b624000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kfree+0x149/0x360 mm/slub.c:4594
ieee80211_inform_bss+0xbb2/0x1080 net/mac80211/scan.c:160
rdev_inform_bss net/wireless/rdev-ops.h:418 [inline]
cfg80211_inform_single_bss_data+0xe93/0x2030 net/wireless/scan.c:2335
cfg80211_inform_bss_data+0x3dd/0x5a70 net/wireless/scan.c:3159
cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3254
ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
ieee80211_scan_rx+0x526/0x9c0 net/mac80211/scan.c:340
__ieee80211_rx_handle_packet net/mac80211/rx.c:5225 [inline]
ieee80211_rx_list+0x2b02/0x3780 net/mac80211/rx.c:5462
ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5485
ieee80211_rx include/net/mac80211.h:5124 [inline]
ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:439
tasklet_action_common+0x321/0x4d0 kernel/softirq.c:785
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d7 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d e5 be 9b 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff888017af0000 RBX: ffff888017e96864 RCX: 00000000004c87d1
RDX: 0000000000000001 RSI: ffff888017e96800 RDI: ffff888017e96864
RBP: 000000000003a678 R08: ffff8880b9337c7b R09: 1ffff11017266f8f
R10: dffffc0000000000 R11: ffffffff8bad7c90 R12: ffff888019fa7000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eeca740
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147