=============================
WARNING: suspicious RCU usage
syzkaller #0 Not tainted
-----------------------------
kernel/sched/core.c:10174 Illegal context switch in RCU-sched read-side critical section!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
5 locks held by syz.3.1295/10770:
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline]
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x182/0xb90 mm/mmap.c:3287
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: __pte_offset_map+0x2c/0x280 mm/pgtable-generic.c:287
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x106/0x1d0 mm/pgtable-generic.c:375
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:878 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xcd/0x420 include/linux/mmzone.h:2011
#4: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698
stack backtrace:
CPU: 0 PID: 10770 Comm: syz.3.1295 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<IRQ>
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
lockdep_rcu_suspicious+0x1e1/0x300 kernel/locking/lockdep.c:6731
__might_resched+0x123/0x5f0 kernel/sched/core.c:10174
start_flush_work kernel/workqueue.c:3414 [inline]
__flush_work+0x10f/0xac0 kernel/workqueue.c:3474
__cancel_work_timer+0x3f8/0x560 kernel/workqueue.c:3562
mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:694
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x570/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x6/0xb0 kernel/rcu/tree.c:699
Code: 8a e8 0e 50 1e 09 48 c7 c7 00 86 13 8d 4c 89 f6 e8 3f c7 f5 02 e9 44 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 <41> 56 53 65 ff 05 a8 7e 92 7e e8 cb 65 1e 09 89 c3 83 f8 08 73 60
RSP: 0018:ffffc90003cc72f0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816908b6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e8c8668
RBP: ffffc90003cc7418 R08: ffffffff8e8c866f R09: 1ffffffff1d190cd
R10: dffffc0000000000 R11: fffffbfff1d190ce R12: ffffffff81eb027d
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000798e6c
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb5/0x8c0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline]
pfn_valid+0x3c5/0x420 include/linux/mmzone.h:2021
page_table_check_clear+0x1e/0x6a0 mm/page_table_check.c:70
ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
zap_pte_range mm/memory.c:1429 [inline]
zap_pmd_range mm/memory.c:1571 [inline]
zap_pud_range mm/memory.c:1600 [inline]
zap_p4d_range mm/memory.c:1621 [inline]
unmap_page_range+0x1c35/0x32f0 mm/memory.c:1642
unmap_vmas+0x286/0x3f0 mm/memory.c:1732
exit_mmap+0x238/0xb90 mm/mmap.c:3302
__mmput+0x118/0x3a0 kernel/fork.c:1362
exit_mm+0x23f/0x340 kernel/exit.c:576
do_exit+0x909/0x2530 kernel/exit.c:877
do_group_exit+0x22d/0x2f0 kernel/exit.c:1032
get_signal+0x12a6/0x1390 kernel/signal.c:2911
arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb56b39e0d9
Code: Unable to access opcode bytes at 0x7fb56b39e0af.
RSP: 002b:00007fb56c2c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000116 RBX: 00007fb56b625fa0 RCX: 00007fb56b39e0d9
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fb56b435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb56b626038 R14: 00007fb56b625fa0 R15: 00007fffd3ef3d88
</TASK>
BUG: sleeping function called from invalid context at kernel/workqueue.c:3414
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 10770, name: syz.3.1295
preempt_count: 102, expected: 0
RCU nest depth: 1, expected: 0
5 locks held by syz.3.1295/10770:
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline]
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x182/0xb90 mm/mmap.c:3287
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: __pte_offset_map+0x2c/0x280 mm/pgtable-generic.c:287
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x106/0x1d0 mm/pgtable-generic.c:375
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:878 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xcd/0x420 include/linux/mmzone.h:2011
#4: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 10770 Comm: syz.3.1295 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<IRQ>
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
__might_resched+0x48d/0x5f0 kernel/sched/core.c:10212
start_flush_work kernel/workqueue.c:3414 [inline]
__flush_work+0x10f/0xac0 kernel/workqueue.c:3474
__cancel_work_timer+0x3f8/0x560 kernel/workqueue.c:3562
mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:694
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x570/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x6/0xb0 kernel/rcu/tree.c:699
Code: 8a e8 0e 50 1e 09 48 c7 c7 00 86 13 8d 4c 89 f6 e8 3f c7 f5 02 e9 44 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 <41> 56 53 65 ff 05 a8 7e 92 7e e8 cb 65 1e 09 89 c3 83 f8 08 73 60
RSP: 0018:ffffc90003cc72f0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816908b6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e8c8668
RBP: ffffc90003cc7418 R08: ffffffff8e8c866f R09: 1ffffffff1d190cd
R10: dffffc0000000000 R11: fffffbfff1d190ce R12: ffffffff81eb027d
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000798e6c
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb5/0x8c0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline]
pfn_valid+0x3c5/0x420 include/linux/mmzone.h:2021
page_table_check_clear+0x1e/0x6a0 mm/page_table_check.c:70
ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
zap_pte_range mm/memory.c:1429 [inline]
zap_pmd_range mm/memory.c:1571 [inline]
zap_pud_range mm/memory.c:1600 [inline]
zap_p4d_range mm/memory.c:1621 [inline]
unmap_page_range+0x1c35/0x32f0 mm/memory.c:1642
unmap_vmas+0x286/0x3f0 mm/memory.c:1732
exit_mmap+0x238/0xb90 mm/mmap.c:3302
__mmput+0x118/0x3a0 kernel/fork.c:1362
exit_mm+0x23f/0x340 kernel/exit.c:576
do_exit+0x909/0x2530 kernel/exit.c:877
do_group_exit+0x22d/0x2f0 kernel/exit.c:1032
get_signal+0x12a6/0x1390 kernel/signal.c:2911
arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb56b39e0d9
Code: Unable to access opcode bytes at 0x7fb56b39e0af.
RSP: 002b:00007fb56c2c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000116 RBX: 00007fb56b625fa0 RCX: 00007fb56b39e0d9
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fb56b435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb56b626038 R14: 00007fb56b625fa0 R15: 00007fffd3ef3d88
</TASK>
=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G W
-----------------------------
kernel/rcu/srcutree.c:1377 Illegal synchronize_srcu() in same-type SRCU (or in RCU) read-side critical section!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
5 locks held by syz.3.1295/10770:
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline]
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x182/0xb90 mm/mmap.c:3287
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: __pte_offset_map+0x2c/0x280 mm/pgtable-generic.c:287
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x106/0x1d0 mm/pgtable-generic.c:375
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:878 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xcd/0x420 include/linux/mmzone.h:2011
#4: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698
stack backtrace:
CPU: 0 PID: 10770 Comm: syz.3.1295 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<IRQ>
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
lockdep_rcu_suspicious+0x1e1/0x300 kernel/locking/lockdep.c:6731
__synchronize_srcu+0x150/0x3d0 kernel/rcu/srcutree.c:1373
wakeup_source_remove drivers/base/power/wakeup.c:198 [inline]
wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242
mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77
device_release+0xbc/0x1e0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x21b/0x450 lib/kobject.c:737
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x570/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x6/0xb0 kernel/rcu/tree.c:699
Code: 8a e8 0e 50 1e 09 48 c7 c7 00 86 13 8d 4c 89 f6 e8 3f c7 f5 02 e9 44 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 <41> 56 53 65 ff 05 a8 7e 92 7e e8 cb 65 1e 09 89 c3 83 f8 08 73 60
RSP: 0018:ffffc90003cc72f0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816908b6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e8c8668
RBP: ffffc90003cc7418 R08: ffffffff8e8c866f R09: 1ffffffff1d190cd
R10: dffffc0000000000 R11: fffffbfff1d190ce R12: ffffffff81eb027d
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000798e6c
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb5/0x8c0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline]
pfn_valid+0x3c5/0x420 include/linux/mmzone.h:2021
page_table_check_clear+0x1e/0x6a0 mm/page_table_check.c:70
ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
zap_pte_range mm/memory.c:1429 [inline]
zap_pmd_range mm/memory.c:1571 [inline]
zap_pud_range mm/memory.c:1600 [inline]
zap_p4d_range mm/memory.c:1621 [inline]
unmap_page_range+0x1c35/0x32f0 mm/memory.c:1642
unmap_vmas+0x286/0x3f0 mm/memory.c:1732
exit_mmap+0x238/0xb90 mm/mmap.c:3302
__mmput+0x118/0x3a0 kernel/fork.c:1362
exit_mm+0x23f/0x340 kernel/exit.c:576
do_exit+0x909/0x2530 kernel/exit.c:877
do_group_exit+0x22d/0x2f0 kernel/exit.c:1032
get_signal+0x12a6/0x1390 kernel/signal.c:2911
arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb56b39e0d9
Code: Unable to access opcode bytes at 0x7fb56b39e0af.
RSP: 002b:00007fb56c2c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000116 RBX: 00007fb56b625fa0 RCX: 00007fb56b39e0d9
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fb56b435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb56b626038 R14: 00007fb56b625fa0 R15: 00007fffd3ef3d88
</TASK>
BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1381
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 10770, name: syz.3.1295
preempt_count: 102, expected: 0
RCU nest depth: 1, expected: 0
5 locks held by syz.3.1295/10770:
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline]
#0: ffff888017c6e0a0 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x182/0xb90 mm/mmap.c:3287
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#1: ffffffff8d131da0 (rcu_read_lock){....}-{1:2}, at: __pte_offset_map+0x2c/0x280 mm/pgtable-generic.c:287
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff888078635378 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x106/0x1d0 mm/pgtable-generic.c:375
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:878 [inline]
#3: ffffffff8d131e60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xcd/0x420 include/linux/mmzone.h:2011
#4: ffffc90000007be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 10770 Comm: syz.3.1295 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
<IRQ>
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
__might_resched+0x48d/0x5f0 kernel/sched/core.c:10212
__synchronize_srcu+0x197/0x3d0 kernel/rcu/srcutree.c:1381
wakeup_source_remove drivers/base/power/wakeup.c:198 [inline]
wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242
mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77
device_release+0xbc/0x1e0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x21b/0x450 lib/kobject.c:737
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x570/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x6/0xb0 kernel/rcu/tree.c:699
Code: 8a e8 0e 50 1e 09 48 c7 c7 00 86 13 8d 4c 89 f6 e8 3f c7 f5 02 e9 44 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 <41> 56 53 65 ff 05 a8 7e 92 7e e8 cb 65 1e 09 89 c3 83 f8 08 73 60
RSP: 0018:ffffc90003cc72f0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816908b6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e8c8668
RBP: ffffc90003cc7418 R08: ffffffff8e8c866f R09: 1ffffffff1d190cd
R10: dffffc0000000000 R11: fffffbfff1d190ce R12: ffffffff81eb027d
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000798e6c
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb5/0x8c0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:344 [inline]
rcu_read_unlock_sched include/linux/rcupdate.h:899 [inline]
pfn_valid+0x3c5/0x420 include/linux/mmzone.h:2021
page_table_check_clear+0x1e/0x6a0 mm/page_table_check.c:70
ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
zap_pte_range mm/memory.c:1429 [inline]
zap_pmd_range mm/memory.c:1571 [inline]
zap_pud_range mm/memory.c:1600 [inline]
zap_p4d_range mm/memory.c:1621 [inline]
unmap_page_range+0x1c35/0x32f0 mm/memory.c:1642
unmap_vmas+0x286/0x3f0 mm/memory.c:1732
exit_mmap+0x238/0xb90 mm/mmap.c:3302
__mmput+0x118/0x3a0 kernel/fork.c:1362
exit_mm+0x23f/0x340 kernel/exit.c:576
do_exit+0x909/0x2530 kernel/exit.c:877
do_group_exit+0x22d/0x2f0 kernel/exit.c:1032
get_signal+0x12a6/0x1390 kernel/signal.c:2911
arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb56b39e0d9
Code: Unable to access opcode bytes at 0x7fb56b39e0af.
RSP: 002b:00007fb56c2c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 0000000000000116 RBX: 00007fb56b625fa0 RCX: 00007fb56b39e0d9
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fb56b435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb56b626038 R14: 00007fb56b625fa0 R15: 00007fffd3ef3d88
</TASK>
ODEBUG: object ffffc900000079c0 is NOT on stack ffffc90003cc0000, but annotated.
======================================================
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 0e 50 1e 09 call 0x91e5013
5: 48 c7 c7 00 86 13 8d mov $0xffffffff8d138600,%rdi
c: 4c 89 f6 mov %r14,%rsi
f: e8 3f c7 f5 02 call 0x2f5c753
14: e9 44 ff ff ff jmp 0xffffff5d
19: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
20: 00 00 00
23: f3 0f 1e fa endbr64
27: 41 57 push %r15
* 29: 41 56 push %r14 <-- trapping instruction
2b: 53 push %rbx
2c: 65 ff 05 a8 7e 92 7e incl %gs:0x7e927ea8(%rip) # 0x7e927edb
33: e8 cb 65 1e 09 call 0x91e6603
38: 89 c3 mov %eax,%ebx
3a: 83 f8 08 cmp $0x8,%eax
3d: 73 60 jae 0x9f