rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 0, t=10502 jiffies, g=37293, q=23496 ncpus=1)
rcu: All QSes seen, last rcu_preempt kthread activity 384 (4294974825-4294974441), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 384 jiffies! g37293 f0x2 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:27432 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6878
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
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: 6216 Comm: syz.4.69 Not tainted 6.16.0-rc2-syzkaller-g739a6c93cc75 #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:stack_trace_consume_entry+0xef/0x280 kernel/stacktrace.c:93
Code: 4c 89 ff 48 8b 74 24 08 48 8b 1f 45 8d 79 01 0f b6 44 15 00 84 c0 0f 85 3a 01 00 00 45 89 38 4e 8d 3c cb 4c 89 f8 48 c1 e8 03 <80> 3c 10 00 74 1a 4c 89 ff 48 89 f3 49 89 d4 4c 89 c5 e8 ca e3 76
RSP: 0018:ffffc90000006c18 EFLAGS: 00000a06
RAX: 1ffff92000000dbb RBX: ffffc90000006da0 RCX: 347b0d2726aab700
RDX: dffffc0000000000 RSI: ffffffff8abb1fb7 RDI: ffffc90000006d20
RBP: 1ffff92000000da6 R08: ffffc90000006d30 R09: 0000000000000007
R10: ffffc90000006cb8 R11: ffffffff81acf6c0 R12: 0000000000000000
R13: 1ffff92000000da5 R14: ffffc90000006d28 R15: ffffc90000006dd8
FS: 0000000000000000(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055610acce950 CR3: 0000000055d9f000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x150 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548
kvfree_call_rcu+0xbb/0x410 mm/slab_common.c:1962
cfg80211_update_known_bss+0x634/0x1330 net/wireless/scan.c:1925
__cfg80211_bss_update+0x147/0x2120 net/wireless/scan.c:1972
cfg80211_inform_single_bss_data+0xba9/0x1ac0 net/wireless/scan.c:2363
cfg80211_inform_bss_data+0x1fb/0x3b20 net/wireless/scan.c:3222
cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3313
ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226
ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355
__ieee80211_rx_handle_packet net/mac80211/rx.c:5183 [inline]
ieee80211_rx_list+0x22fc/0x2d80 net/mac80211/rx.c:5420
ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5443
ieee80211_rx include/net/mac80211.h:5185 [inline]
ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:441
tasklet_action_common+0x36c/0x580 kernel/softirq.c:829
handle_softirqs+0x286/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lruvec_pgdat include/linux/mmzone.h:1537 [inline]
RIP: 0010:__mod_lruvec_state mm/memcontrol.c:776 [inline]
RIP: 0010:__lruvec_stat_mod_folio+0x182/0x2f0 mm/memcontrol.c:800
Code: 00 00 74 08 48 89 ef e8 5c 83 f8 ff 4c 39 7d 00 0f 85 12 01 00 00 43 80 7c 35 00 00 74 08 48 89 ef e8 42 83 f8 ff 48 8b 7d 00 <44> 8b 74 24 04 49 63 d6 89 de e8 9f cf d7 ff 66 90 4c 89 e7 89 de
RSP: 0018:ffffc9000db172c8 EFLAGS: 00000246
RAX: 1ffff110037dc328 RBX: 0000000000000011 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8be28aa0 RDI: ffff88805ffd6400
RBP: ffff8880304f8ee0 R08: 0000000000000000 R09: ffffffff822b5659
R10: dffffc0000000000 R11: fffff9400029a497 R12: ffff8880304f8888
R13: 1ffff1100609f1dc R14: dffffc0000000000 R15: ffff88805ffd6400
__folio_mod_stat mm/rmap.c:1412 [inline]
__folio_remove_rmap mm/rmap.c:1777 [inline]
folio_remove_rmap_ptes+0x14b/0xaf0 mm/rmap.c:1804
zap_present_folio_ptes mm/memory.c:1529 [inline]
zap_present_ptes mm/memory.c:1590 [inline]
do_zap_pte_range mm/memory.c:1691 [inline]
zap_pte_range mm/memory.c:1735 [inline]
zap_pmd_range mm/memory.c:1827 [inline]
zap_pud_range mm/memory.c:1856 [inline]
zap_p4d_range mm/memory.c:1877 [inline]
unmap_page_range+0x1e59/0x41c0 mm/memory.c:1898
unmap_single_vma mm/memory.c:1941 [inline]
unmap_vmas+0x399/0x580 mm/memory.c:1985
exit_mmap+0x248/0xb50 mm/mmap.c:1284
__mmput+0x118/0x420 kernel/fork.c:1121
exit_mm+0x1da/0x2c0 kernel/exit.c:581
do_exit+0x640/0x22e0 kernel/exit.c:943
do_group_exit+0x21c/0x2d0 kernel/exit.c:1104
get_signal+0x1286/0x1340 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c53f8e929
Code: Unable to access opcode bytes at 0x7f6c53f8e8ff.
RSP: 002b:00007f6c54d6c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f6c541b5fa8 RCX: 00007f6c53f8e929
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f6c541b5fac
RBP: 00007f6c541b5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007f6c541b5fac
R13: 0000000000000000 R14: 00007ffeaea603c0 R15: 00007ffeaea604a8