rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6258/1:b..l P6232/1:b..l P5218/2:b..l P5866/1:b..l P2/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=14025, q=1954180 ncpus=2)
task:kthreadd state:R running task stack:25232 pid:2 tgid:2 ppid:0 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6854
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6878
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x18f8/0x22d0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
discard_slab mm/slub.c:2678 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3146
put_cpu_partial+0x17c/0x250 mm/slub.c:3221
__slab_free+0x2ea/0x3d0 mm/slub.c:4450
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x23/0xb0 mm/kasan/common.c:385
kasan_kmalloc include/linux/kasan.h:257 [inline]
__do_kmalloc_node mm/slub.c:4265 [inline]
__kmalloc_noprof+0x1fc/0x400 mm/slub.c:4277
kmalloc_noprof include/linux/slab.h:882 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
lsm_blob_alloc security/security.c:685 [inline]
lsm_task_alloc security/security.c:771 [inline]
security_task_alloc+0x4a/0x340 security/security.c:3157
copy_process+0x166c/0x3d50 kernel/fork.c:2357
kernel_clone+0x226/0x8f0 kernel/fork.c:2787
kernel_thread+0x1bc/0x240 kernel/fork.c:2849
create_kthread kernel/kthread.c:412 [inline]
kthreadd+0x60d/0x810 kernel/kthread.c:765
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:syz-executor state:R running task stack:21456 pid:5866 tgid:5866 ppid:5859 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x11/0x90 kernel/kcov.c:321
Code: 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 c0 d7 03 00 <65> 8b 05 20 f7 6e 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83
RSP: 0018:ffffc900041e7a08 EFLAGS: 00000246
RAX: ffffffff820b6122 RBX: dffffc0000000000 RCX: ffff88801f353c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff820b6135 R09: 1ffff11003849277
R10: dffffc0000000000 R11: ffffed1003849278 R12: ffff88801c2493c0
R13: 1ffffffff34879b4 R14: 0000000000000003 R15: 0000000000000004
__page_table_check_zero+0x115/0x350 mm/page_table_check.c:153
page_table_check_free include/linux/page_table_check.h:41 [inline]
free_pages_prepare mm/page_alloc.c:1109 [inline]
free_unref_page+0xd0f/0xf20 mm/page_alloc.c:2638
discard_slab mm/slub.c:2678 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3146
put_cpu_partial+0x17c/0x250 mm/slub.c:3221
__slab_free+0x2ea/0x3d0 mm/slub.c:4450
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4086 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4142
getname_flags+0xb7/0x540 fs/namei.c:139
vfs_fstatat+0x12c/0x190 fs/stat.c:340
__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: 0033:0x7f703057c80a
RSP: 002b:00007ffe9769dae8 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007f70305f0134 RCX: 00007f703057c80a
RDX: 00007ffe9769db10 RSI: 00007ffe9769dba0 RDI: 00000000ffffff9c
RBP: 00007ffe9769dba0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffe9769ec20
R13: 00007f70305f0134 R14: 0000000000039fc3 R15: 00007ffe9769ec60
task:syz-executor state:R running task stack:20528 pid:5218 tgid:5218 ppid:5216 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6854
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6878
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0x179/0x200 kernel/softirq.c:389
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
__dev_queue_xmit+0x171d/0x3ed0 net/core/dev.c:4455
dev_queue_xmit include/linux/netdevice.h:3094 [inline]
neigh_hh_output include/net/neighbour.h:526 [inline]
neigh_output include/net/neighbour.h:540 [inline]
ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236
ip_local_out net/ipv4/ip_output.c:130 [inline]
__ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:536
__tcp_transmit_skb+0x2544/0x3b30 net/ipv4/tcp_output.c:1466
tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline]
tcp_write_xmit+0x17b5/0x6bf0 net/ipv4/tcp_output.c:2830
__tcp_push_pending_frames+0x9b/0x360 net/ipv4/tcp_output.c:3015
tcp_sendmsg_locked+0x45f9/0x50a0 net/ipv4/tcp.c:1325
tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1357
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x1a6/0x270 net/socket.c:744
sock_write_iter+0x2d7/0x3f0 net/socket.c:1165
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xa6d/0xc90 fs/read_write.c:683
ksys_write+0x183/0x2b0 fs/read_write.c:736
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: 0033:0x7f90b397caa0
RSP: 002b:00007ffc19b8bba8 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc19b8c100 RCX: 00007f90b397caa0
RDX: 0000000000000038 RSI: 000055555b73db98 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00000000000003dc R09: 000055555b73a160
R10: 000055555b73d7d4 R11: 0000000000000202 R12: 0000000000000038
R13: 000055555b73db98 R14: 0000000000000000 R15: 00007ffc19b8c0e0
task:syz.3.204 state:R running task stack:21664 pid:6232 tgid:6232 ppid:5872 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6854
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6878
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1691 [inline]
zap_pmd_range mm/memory.c:1739 [inline]
zap_pud_range mm/memory.c:1768 [inline]
zap_p4d_range mm/memory.c:1789 [inline]
unmap_page_range+0x36b1/0x40e0 mm/memory.c:1810
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900
exit_mmap+0x275/0xc40 mm/mmap.c:1864
__mmput+0x115/0x390 kernel/fork.c:1347
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x28e0 kernel/exit.c:926
do_group_exit+0x207/0x2c0 kernel/exit.c:1088
get_signal+0x16a3/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa8b217dff9
RSP: 002b:00007ffc0dd542a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fa8b2337a80 RCX: 00007fa8b217dff9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fa8b2337a80 R08: 0000000000000006 R09: 00007ffc0dd5459f
R10: 00000000003febd8 R11: 0000000000000246 R12: 000000000003a11c
R13: 00007ffc0dd543b0 R14: 0000000000000032 R15: ffffffffffffffff
task:rm state:R running task stack:24248 pid:6258 tgid:6258 ppid:6214 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6854
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6878
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x18f8/0x22d0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1108 [inline]
free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
__slab_free+0x31b/0x3d0 mm/slub.c:4491
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:247 [inline]
slab_post_alloc_hook mm/slub.c:4086 [inline]
slab_alloc_node mm/slub.c:4135 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4142
vm_area_dup+0x27/0x290 kernel/fork.c:487
__split_vma+0x1cb/0xc50 mm/vma.c:384
vms_gather_munmap_vmas+0x2ee/0x15d0 mm/vma.c:1205
do_vmi_align_munmap+0x423/0x730 mm/vma.c:1340
do_vmi_munmap+0x24e/0x2d0 mm/vma.c:1397
__vm_munmap+0x24c/0x480 mm/mmap.c:1600
elf_map fs/binfmt_elf.c:383 [inline]
elf_load+0x2d8/0x6f0 fs/binfmt_elf.c:408
load_elf_interp+0x440/0xac0 fs/binfmt_elf.c:675
load_elf_binary+0x1a44/0x2710 fs/binfmt_elf.c:1235
search_binary_handler fs/exec.c:1752 [inline]
exec_binprm fs/exec.c:1794 [inline]
bprm_execve+0xaf8/0x1770 fs/exec.c:1845
do_execveat_common+0x55f/0x6f0 fs/exec.c:1952
do_execve fs/exec.c:2026 [inline]
__do_sys_execve fs/exec.c:2102 [inline]
__se_sys_execve fs/exec.c:2097 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2097
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: 0033:0x7fd5eeb66ef7
RSP: 002b:00007ffd086c9978 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 0000555c4fe2fe28 RCX: 00007fd5eeb66ef7
RDX: 0000555c4fe2fe48 RSI: 0000555c4fe2fe28 RDI: 0000555c4fe2fed0
RBP: 0000555c4fe2fed0 R08: 0000555c4fe2fed5 R09: 00007ffd086cceb9
R10: 0000000000000008 R11: 0000000000000246 R12: 0000555c4fe2fe48
R13: 00007fd5eed14904 R14: 0000555c4fe2fe48 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10673 jiffies! g14025 f0x2 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:25888 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
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: 2984 Comm: kworker/u8:8 Not tainted 6.12.0-rc1-syzkaller-00163-gb63c755cb65d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:debug_check_no_locks_freed+0x171/0x4b0 kernel/locking/lockdep.c:6669
Code: 48 05 e0 0a 00 00 48 89 44 24 20 48 8b 44 24 08 48 01 44 24 10 45 31 ff 4d 63 e7 41 83 fc 31 73 77 4f 8d 24 a4 48 8b 44 24 20 <4a> 8d 5c e0 10 48 89 d8 48 c1 e8 03 80 3c 10 00 74 12 48 89 df e8
RSP: 0018:ffffc9000a0d6cc0 EFLAGS: 00000087
RAX: ffff88802f808ae0 RBX: ffff88802f808b40 RCX: ffffea0000000000
RDX: dffffc0000000000 RSI: 0000000000000400 RDI: ffff88802ca97800
RBP: ffffc9000a0d6db0 R08: 0000000000000000 R09: 1ffff11009bd141b
R10: dffffc0000000000 R11: ffffed1009bd141c R12: 000000000000000f
R13: 1ffff11005f0115b R14: ffff88802f808ad8 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555734195c8 CR3: 000000007d37a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_free_hook mm/slub.c:2271 [inline]
slab_free mm/slub.c:4580 [inline]
kfree+0x109/0x440 mm/slub.c:4728
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+0xec1/0x2090 net/wireless/scan.c:2333
cfg80211_inform_bss_data+0x3ce/0x5e70 net/wireless/scan.c:3184
cfg80211_inform_bss_frame_data+0x3b8/0x720 net/wireless/scan.c:3279
ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1962/0x2d70 net/mac80211/ibss.c:1606
ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline]
ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1657
cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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