rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6214/1:b..l P6218/1:b..l P6215/3:b..l
rcu: (detected by 1, t=10503 jiffies, g=12737, q=1025 ncpus=2)
task:syz.0.55 state:R running task stack:25576 pid:6215 tgid:6215 ppid:5827 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5263 [inline]
__schedule+0x1836/0x4ed0 kernel/sched/core.c:6871
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:7055
preempt_schedule+0xae/0xc0 kernel/sched/core.c:7079
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
filemap_map_pages+0x17b5/0x1e40 mm/filemap.c:3930
do_fault_around mm/memory.c:5711 [inline]
do_read_fault mm/memory.c:5744 [inline]
do_fault mm/memory.c:5887 [inline]
do_pte_missing+0x20b3/0x3380 mm/memory.c:4399
handle_pte_fault mm/memory.c:6271 [inline]
__handle_mm_fault mm/memory.c:6409 [inline]
handle_mm_fault+0x1b48/0x32c0 mm/memory.c:6578
do_user_addr_fault+0xa7c/0x1380 arch/x86/mm/fault.c:1336
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fddce46f2ed
RSP: 002b:00007ffe1a68ae70 EFLAGS: 00010202
RAX: 000000110c318000 RBX: 00007fddcf315720 RCX: 0000000000000003
RDX: 00000000000016dd RSI: 0000000000001b5b RDI: 0000000000000008
RBP: ffffffff84c6d6dd R08: 00007fddce7e6038 R09: 00007fddce7d2000
R10: 00007fddcdfff008 R11: 0000000000000003 R12: 0000000000000003
R13: 0000000000000000 R14: ffffffff84c6d809 R15: 0000000000000004
task:syz.1.56 state:R running task stack:26728 pid:6218 tgid:6212 ppid:5838 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5263 [inline]
__schedule+0x1836/0x4ed0 kernel/sched/core.c:6871
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7198
irqentry_exit+0x5b5/0x640 kernel/entry/common.c:216
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__pte_offset_map_lock+0x7f/0x210 mm/pgtable-generic.c:-1
Code: b9 00 00 00 00 00 fc ff df 48 ba 00 00 e0 ff ff ff 0f 00 48 c7 c6 30 75 9a 8d 48 c1 ee 03 48 81 c2 00 f0 1f 00 48 89 54 24 20 <49> 89 dc 49 c1 ec 03 4c 89 7c 24 08 48 89 34 24 48 89 44 24 18 80
RSP: 0018:ffffc90005477968 EFLAGS: 00000206
RAX: ffff8880788fb8c0 RBX: ffff88801e71c000 RCX: dffffc0000000000
RDX: 000ffffffffff000 RSI: 1ffffffff1b34ea6 RDI: 000000000002e331
RBP: ffffc90005477ad0 R08: 0000000000000000 R09: ffffffff821443e9
R10: dffffc0000000000 R11: ffffed100fd0a3d1 R12: ffff8880781123d0
R13: dffffc0000000000 R14: ffffc90005477a60 R15: 0000200000118000
pte_offset_map_lock include/linux/mm.h:3361 [inline]
follow_page_pte+0xc4/0x13e0 mm/gup.c:812
follow_pmd_mask mm/gup.c:-1 [inline]
follow_pud_mask mm/gup.c:967 [inline]
follow_p4d_mask mm/gup.c:984 [inline]
follow_page_mask mm/gup.c:1023 [inline]
__get_user_pages+0xa6c/0x29f0 mm/gup.c:1426
populate_vma_page_range+0x29f/0x3a0 mm/gup.c:1860
__mm_populate+0x24c/0x380 mm/gup.c:1963
mm_populate include/linux/mm.h:3701 [inline]
vm_mmap_pgoff+0x387/0x4d0 mm/util.c:586
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0a4758f749
RSP: 002b:00007f0a484d9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f0a477e6090 RCX: 00007f0a4758f749
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f0a47613f91 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0a477e6128 R14: 00007f0a477e6090 R15: 00007ffcf63fdcc8
task:modprobe state:R running task stack:23624 pid:6214 tgid:6214 ppid:36 task_flags:0x400000 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5263 [inline]
__schedule+0x1836/0x4ed0 kernel/sched/core.c:6871
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7198
irqentry_exit+0x5b5/0x640 kernel/entry/common.c:216
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x16c/0x350 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 14 ff d7 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90003cee4b8 EFLAGS: 00000206
RAX: db4a76d49cde7b00 RBX: 0000000000000000 RCX: db4a76d49cde7b00
RDX: 0000000000000000 RSI: ffffffff8d9761d1 RDI: ffffffff8bbf80e0
RBP: ffffffff81741ff5 R08: 0000000000000000 R09: ffffffff81741ff5
R10: ffffc90003cee688 R11: fffff5200079dcdd R12: 0000000000000002
R13: ffffffff8df3d9c0 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
__unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
unpoison_slab_object mm/kasan/common.c:339 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:365
kasan_slab_alloc include/linux/kasan.h:252 [inline]
slab_post_alloc_hook mm/slub.c:4948 [inline]
kmem_cache_alloc_from_sheaf_noprof+0xa7/0x1a0 mm/slub.c:5565
mas_pop_node lib/maple_tree.c:1086 [inline]
mas_new_ma_node lib/maple_tree.c:2140 [inline]
mas_split_final_node+0x1a9/0x580 lib/maple_tree.c:2816
mas_push_data+0x97d/0xcd0 lib/maple_tree.c:2963
mas_split lib/maple_tree.c:3027 [inline]
mas_commit_b_node+0x919/0x1090 lib/maple_tree.c:3072
mas_wr_bnode lib/maple_tree.c:3739 [inline]
mas_wr_store_entry+0x522/0x27b0 lib/maple_tree.c:3771
mas_store_prealloc+0xaf2/0x1030 lib/maple_tree.c:5169
vma_iter_store_new mm/vma.h:548 [inline]
vma_complete+0x224/0xae0 mm/vma.c:348
__split_vma+0x8b0/0xa00 mm/vma.c:561
split_vma mm/vma.c:591 [inline]
vma_modify+0x952/0x1a70 mm/vma.c:1634
vma_modify_flags+0x208/0x2e0 mm/vma.c:1654
mprotect_fixup+0x43c/0xa30 mm/mprotect.c:756
do_mprotect_pkey+0x8c5/0xcd0 mm/mprotect.c:930
__do_sys_mprotect mm/mprotect.c:951 [inline]
__se_sys_mprotect mm/mprotect.c:948 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:948
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f142b2062c7
RSP: 002b:00007ffd587ce2f8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f142b219da0 RCX: 00007f142b2062c7
RDX: 0000000000000001 RSI: 0000000000002000 RDI: 00007f142b217000
RBP: 00007ffd587ce5c0 R08: 000000003de00ec7 R09: 0000000000000000
R10: 00007f142af4ac58 R11: 0000000000000206 R12: fffffffffffffff8
R13: 0000003fbf67cbd4 R14: 0000000000000000 R15: 00007f142b21a310
rcu: rcu_preempt kthread starved for 10524 jiffies! g12737 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:27032 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5263 [inline]
__schedule+0x1836/0x4ed0 kernel/sched/core.c:6871
__schedule_loop kernel/sched/core.c:6953 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6968
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:check_preemption_disabled+0x6/0x120 lib/smp_processor_id.c:13
Code: c7 c6 c0 80 bf 8b eb 1c 66 66 66 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 55 41 57 41 56 53 <48> 83 ec 10 65 48 8b 05 1e 12 1b 07 48 89 44 24 08 65 8b 05 26 12
RSP: 0018:ffffc90000a085b0 EFLAGS: 00000283
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8bbf80c0 RDI: ffffffff8bbf8080
RBP: ffffffff81741ff5 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000a087b8 R11: ffffffff81ada5d0 R12: 0000000000000002
R13: ffffffff8df3d9c0 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888125fb9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd756dcabb4 CR3: 0000000076bca000 CR4: 00000000003526f0
Call Trace:
rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x5f/0x350 kernel/locking/lockdep.c:5831
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:252 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2540 [inline]
slab_free mm/slub.c:6663 [inline]
kmem_cache_free+0x197/0x640 mm/slub.c:6774
mac80211_hwsim_beacon_tx+0x3f0/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2365
__iterate_interfaces+0x2ab/0x590 net/mac80211/util.c:761
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797
mac80211_hwsim_beacon+0xbb/0x180 drivers/net/wireless/virtual/mac80211_hwsim.c:2395
__run_hrtimer kernel/time/hrtimer.c:1777 [inline]
__hrtimer_run_queues+0x51c/0xc70 kernel/time/hrtimer.c:1841
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1858
handle_softirqs+0x27d/0x880 kernel/softirq.c:626
__do_softirq kernel/softirq.c:660 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727
irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 00 0d 00 f3 0f 1e fa fb f4 48 f1 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6
RAX: a16df8017a23b100 RBX: ffffffff81978747 RCX: a16df8017a23b100
RDX: 0000000000000001 RSI: ffffffff8d78f926 RDI: ffffffff8bbf80e0
RBP: ffffc90000197f10 R08: ffff8880b87336db R09: 1ffff110170e66db
R10: dffffc0000000000 R11: ffffed10170e66dc R12: ffffffff8f7deb70
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003a52b70
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x73/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:190 [inline]
do_idle+0x1e7/0x510 kernel/sched/idle.c:330
cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428
start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x147