=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G L
-----------------------------
kernel/sched/core.c:9164 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
locks held by syz-executor/5618: 9, last CPU#1:
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1548 [inline]
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x10f/0x480 kernel/fork.c:1601
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:554 [inline]
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x16e/0x1d90 mm/mmap.c:1739
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:544 [inline]
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x256/0x1d90 mm/mmap.c:1746
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1272 [inline]
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range+0x696/0x5890 mm/memory.c:1408
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:938 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2270
#8: ffffc90000a08cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745
stack backtrace:
CPU: 1 UID: 0 PID: 5618 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6894
__might_resched+0xbb/0x4c0 kernel/sched/core.c:9164
__cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4487
mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700
call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2374 [inline]
__run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386
run_timer_base kernel/time/timer.c:2395 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:767
irq_exit_rcu+0x9/0x30 kernel/softirq.c:784
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x18/0xb0 kernel/rcu/tree.c:752
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 48 ff 05 8f 4d c2 11 e8 2a ff 28 0a 89 c3 <83> f8 08 73 66 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 f7 4f
RSP: 0018:ffffc9000250f270 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 8000000000000004
RDX: 0000000000000000 RSI: ffffffff8c4bdd60 RDI: ffffffff8c4bdd20
RBP: 0000000000000001 R08: ffffffff8240856a R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb5a1a0 R12: dffffc0000000000
R13: 0000000000000018 R14: 0000000000070a7f R15: ffff88813fe571c0
rcu_read_lock_sched include/linux/rcupdate.h:939 [inline]
pfn_valid+0xf3/0x490 include/linux/mmzone.h:2270
page_table_check_set+0x25/0x530 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
set_ptes include/linux/pgtable.h:447 [inline]
__copy_present_ptes mm/memory.c:1118 [inline]
copy_present_ptes mm/memory.c:1197 [inline]
copy_pte_range mm/memory.c:1320 [inline]
copy_pmd_range+0x4780/0x5890 mm/memory.c:1408
copy_pud_range mm/memory.c:1445 [inline]
copy_p4d_range mm/memory.c:1469 [inline]
copy_page_range+0xc26/0x1250 mm/memory.c:1555
dup_mmap+0xf21/0x1d90 mm/mmap.c:1840
dup_mm kernel/fork.c:1549 [inline]
copy_mm+0x11a/0x480 kernel/fork.c:1601
copy_process+0x1e75/0x43e0 kernel/fork.c:2313
kernel_clone+0x2d7/0x940 kernel/fork.c:2772
__do_sys_clone kernel/fork.c:2914 [inline]
__se_sys_clone kernel/fork.c:2898 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2898
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2cc43c6b52
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff795c8a00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff795c8a00 RCX: 00007f2cc43c6b52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff795c8b8c R08: 0000000000000000 R09: 0000000000000001
R10: 000055557dd497d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000004a828 R15: 00007fff795c8be0
BUG: sleeping function called from invalid context at kernel/workqueue.c:4487
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5618, name: syz-executor
preempt_count: 104, expected: 0
RCU nest depth: 2, expected: 0
locks held by syz-executor/5618: 9, last CPU#1:
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1548 [inline]
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x10f/0x480 kernel/fork.c:1601
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:554 [inline]
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x16e/0x1d90 mm/mmap.c:1739
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:544 [inline]
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x256/0x1d90 mm/mmap.c:1746
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1272 [inline]
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range+0x696/0x5890 mm/memory.c:1408
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:938 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2270
#8: ffffc90000a08cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 5618 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
__might_resched+0x36a/0x4c0 kernel/sched/core.c:9202
__cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4487
mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700
call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2374 [inline]
__run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386
run_timer_base kernel/time/timer.c:2395 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:767
irq_exit_rcu+0x9/0x30 kernel/softirq.c:784
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x18/0xb0 kernel/rcu/tree.c:752
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 48 ff 05 8f 4d c2 11 e8 2a ff 28 0a 89 c3 <83> f8 08 73 66 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 f7 4f
RSP: 0018:ffffc9000250f270 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 8000000000000004
RDX: 0000000000000000 RSI: ffffffff8c4bdd60 RDI: ffffffff8c4bdd20
RBP: 0000000000000001 R08: ffffffff8240856a R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb5a1a0 R12: dffffc0000000000
R13: 0000000000000018 R14: 0000000000070a7f R15: ffff88813fe571c0
rcu_read_lock_sched include/linux/rcupdate.h:939 [inline]
pfn_valid+0xf3/0x490 include/linux/mmzone.h:2270
page_table_check_set+0x25/0x530 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
set_ptes include/linux/pgtable.h:447 [inline]
__copy_present_ptes mm/memory.c:1118 [inline]
copy_present_ptes mm/memory.c:1197 [inline]
copy_pte_range mm/memory.c:1320 [inline]
copy_pmd_range+0x4780/0x5890 mm/memory.c:1408
copy_pud_range mm/memory.c:1445 [inline]
copy_p4d_range mm/memory.c:1469 [inline]
copy_page_range+0xc26/0x1250 mm/memory.c:1555
dup_mmap+0xf21/0x1d90 mm/mmap.c:1840
dup_mm kernel/fork.c:1549 [inline]
copy_mm+0x11a/0x480 kernel/fork.c:1601
copy_process+0x1e75/0x43e0 kernel/fork.c:2313
kernel_clone+0x2d7/0x940 kernel/fork.c:2772
__do_sys_clone kernel/fork.c:2914 [inline]
__se_sys_clone kernel/fork.c:2898 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2898
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2cc43c6b52
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff795c8a00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff795c8a00 RCX: 00007f2cc43c6b52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff795c8b8c R08: 0000000000000000 R09: 0000000000000001
R10: 000055557dd497d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000004a828 R15: 00007fff795c8be0
=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G W L
-----------------------------
kernel/rcu/srcutree.c:1487 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
locks held by syz-executor/5618: 9, last CPU#1:
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1548 [inline]
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x10f/0x480 kernel/fork.c:1601
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:554 [inline]
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x16e/0x1d90 mm/mmap.c:1739
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:544 [inline]
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x256/0x1d90 mm/mmap.c:1746
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1272 [inline]
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range+0x696/0x5890 mm/memory.c:1408
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:938 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2270
#8: ffffc90000a08cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745
stack backtrace:
CPU: 1 UID: 0 PID: 5618 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full)
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6894
__synchronize_srcu+0x157/0x2f0 kernel/rcu/srcutree.c:1483
wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237
mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69
device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737
call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2374 [inline]
__run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386
run_timer_base kernel/time/timer.c:2395 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:767
irq_exit_rcu+0x9/0x30 kernel/softirq.c:784
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x18/0xb0 kernel/rcu/tree.c:752
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 48 ff 05 8f 4d c2 11 e8 2a ff 28 0a 89 c3 <83> f8 08 73 66 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 f7 4f
RSP: 0018:ffffc9000250f270 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 8000000000000004
RDX: 0000000000000000 RSI: ffffffff8c4bdd60 RDI: ffffffff8c4bdd20
RBP: 0000000000000001 R08: ffffffff8240856a R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb5a1a0 R12: dffffc0000000000
R13: 0000000000000018 R14: 0000000000070a7f R15: ffff88813fe571c0
rcu_read_lock_sched include/linux/rcupdate.h:939 [inline]
pfn_valid+0xf3/0x490 include/linux/mmzone.h:2270
page_table_check_set+0x25/0x530 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
set_ptes include/linux/pgtable.h:447 [inline]
__copy_present_ptes mm/memory.c:1118 [inline]
copy_present_ptes mm/memory.c:1197 [inline]
copy_pte_range mm/memory.c:1320 [inline]
copy_pmd_range+0x4780/0x5890 mm/memory.c:1408
copy_pud_range mm/memory.c:1445 [inline]
copy_p4d_range mm/memory.c:1469 [inline]
copy_page_range+0xc26/0x1250 mm/memory.c:1555
dup_mmap+0xf21/0x1d90 mm/mmap.c:1840
dup_mm kernel/fork.c:1549 [inline]
copy_mm+0x11a/0x480 kernel/fork.c:1601
copy_process+0x1e75/0x43e0 kernel/fork.c:2313
kernel_clone+0x2d7/0x940 kernel/fork.c:2772
__do_sys_clone kernel/fork.c:2914 [inline]
__se_sys_clone kernel/fork.c:2898 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2898
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2cc43c6b52
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff795c8a00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff795c8a00 RCX: 00007f2cc43c6b52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff795c8b8c R08: 0000000000000000 R09: 0000000000000001
R10: 000055557dd497d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000004a828 R15: 00007fff795c8be0
BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1491
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5618, name: syz-executor
preempt_count: 104, expected: 0
RCU nest depth: 2, expected: 0
locks held by syz-executor/5618: 9, last CPU#1:
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1548 [inline]
#0: ffffffff8ec2b310 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x10f/0x480 kernel/fork.c:1601
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:554 [inline]
#1: ffff88803444d038 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x16e/0x1d90 mm/mmap.c:1739
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:544 [inline]
#2: ffff88803471e9b8 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x256/0x1d90 mm/mmap.c:1746
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#3: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
#4: ffff88802a55ef78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#5: ffffffff8eb5a0e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1272 [inline]
#6: ffff88805928c258 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range+0x696/0x5890 mm/memory.c:1408
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:938 [inline]
#7: ffffffff8eb5a1a0 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2270
#8: ffffc90000a08cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 5618 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full)
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
__might_resched+0x36a/0x4c0 kernel/sched/core.c:9202
__synchronize_srcu+0x1a1/0x2f0 kernel/rcu/srcutree.c:1491
wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237
mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69
device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737
call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers kernel/time/timer.c:2374 [inline]
__run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386
run_timer_base kernel/time/timer.c:2395 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:767
irq_exit_rcu+0x9/0x30 kernel/softirq.c:784
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x18/0xb0 kernel/rcu/tree.c:752
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 65 48 ff 05 8f 4d c2 11 e8 2a ff 28 0a 89 c3 <83> f8 08 73 66 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd d0 f7 4f
RSP: 0018:ffffc9000250f270 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 8000000000000004
RDX: 0000000000000000 RSI: ffffffff8c4bdd60 RDI: ffffffff8c4bdd20
RBP: 0000000000000001 R08: ffffffff8240856a R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb5a1a0 R12: dffffc0000000000
R13: 0000000000000018 R14: 0000000000070a7f R15: ffff88813fe571c0
rcu_read_lock_sched include/linux/rcupdate.h:939 [inline]
pfn_valid+0xf3/0x490 include/linux/mmzone.h:2270
page_table_check_set+0x25/0x530 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
set_ptes include/linux/pgtable.h:447 [inline]
__copy_present_ptes mm/memory.c:1118 [inline]
copy_present_ptes mm/memory.c:1197 [inline]
copy_pte_range mm/memory.c:1320 [inline]
copy_pmd_range+0x4780/0x5890 mm/memory.c:1408
copy_pud_range mm/memory.c:1445 [inline]
copy_p4d_range mm/memory.c:1469 [inline]
copy_page_range+0xc26/0x1250 mm/memory.c:1555
dup_mmap+0xf21/0x1d90 mm/mmap.c:1840
dup_mm kernel/fork.c:1549 [inline]
copy_mm+0x11a/0x480 kernel/fork.c:1601
copy_process+0x1e75/0x43e0 kernel/fork.c:2313
kernel_clone+0x2d7/0x940 kernel/fork.c:2772
__do_sys_clone kernel/fork.c:2914 [inline]
__se_sys_clone kernel/fork.c:2898 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2898
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2cc43c6b52
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff795c8a00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff795c8a00 RCX: 00007f2cc43c6b52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff795c8b8c R08: 0000000000000000 R09: 0000000000000001
R10: 000055557dd497d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000004a828 R15: 00007fff795c8be0
ODEBUG: object ffffc90000a08a80 is NOT on stack ffffc90002508000, but annotated.
======================================================
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: f3 0f 1e fa endbr64
16: 41 57 push %r15
18: 41 56 push %r14
1a: 53 push %rbx
1b: 65 48 ff 05 8f 4d c2 incq %gs:0x11c24d8f(%rip) # 0x11c24db2
22: 11
23: e8 2a ff 28 0a call 0xa28ff52
28: 89 c3 mov %eax,%ebx
* 2a: 83 f8 08 cmp $0x8,%eax <-- trapping instruction
2d: 73 66 jae 0x95
2f: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
36: fc ff df
39: 4c rex.WR
3a: 8d .byte 0x8d
3b: 34 dd xor $0xdd,%al
3d: d0 f7 shl $1,%bh
3f: 4f rex.WRXB