=============================
WARNING: suspicious RCU usage
syzkaller #0 Not tainted
-----------------------------
kernel/sched/core.c:9218 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/2985: 9, last CPU#1:
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1542 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm kernel/fork.c:1595 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_process+0x4b03/0x80f0 kernel/fork.c:2307
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline]
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x127/0x2150 mm/mmap.c:1716
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:552 [inline]
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x1c9/0x2150 mm/mmap.c:1723
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1354 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range mm/memory.c:1490 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pud_range mm/memory.c:1527 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_p4d_range mm/memory.c:1551 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_page_range+0xd57/0x5630 mm/memory.c:1637
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #8: ffffc900001b8c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 1 UID: 0 PID: 2985 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 lockdep_rcu_suspicious.cold+0x4f/0xb2 kernel/locking/lockdep.c:6972
 __might_resched+0x2d9/0x330 kernel/sched/core.c:9218
 __cancel_work_sync kernel/workqueue.c:4561 [inline]
 cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4642
 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x61/0xc0 kernel/rcu/tree.c:753
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 03 1c ed e0 4b 4b 89 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 25 8b 03 c1 e8 02
RSP: 0018:ffffc900016c73d8 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff8881f57339e8 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff87d2b700 RDI: ffffffff894b4be8
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
 trace_lock_release include/trace/events/lock.h:68 [inline]
 lock_release+0x24d/0x310 kernel/locking/lockdep.c:5954
 rcu_lock_release include/linux/rcupdate.h:319 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:971 [inline]
 pfn_valid+0x1e8/0x4b0 include/linux/mmzone.h:2286
 page_table_check_set+0x25/0x580 mm/page_table_check.c:105
 __page_table_check_ptes_set+0x217/0x270 mm/page_table_check.c:223
 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:1200 [inline]
 copy_present_ptes mm/memory.c:1279 [inline]
 copy_pte_range mm/memory.c:1402 [inline]
 copy_pmd_range mm/memory.c:1490 [inline]
 copy_pud_range mm/memory.c:1527 [inline]
 copy_p4d_range mm/memory.c:1551 [inline]
 copy_page_range+0x2206/0x5630 mm/memory.c:1637
 dup_mmap+0x1205/0x2150 mm/mmap.c:1819
 dup_mm kernel/fork.c:1543 [inline]
 copy_mm kernel/fork.c:1595 [inline]
 copy_process+0x4b0e/0x80f0 kernel/fork.c:2307
 kernel_clone+0x176/0x9d0 kernel/fork.c:2766
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2908
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b829d6bd2
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:00007fff66dee3b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff66dee3b0 RCX: 00007f3b829d6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff66dee53c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555570bce7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000082c34 R15: 00007fff66dee590
 </TASK>
BUG: sleeping function ca
BUG: sleeping function called from invalid context at kernel/workqueue.c:4561
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2985, name: syz-executor
preempt_count: 104, expected: 0
RCU nest depth: 2, expected: 0
locks held by syz-executor/2985: 9, last CPU#1:
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1542 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm kernel/fork.c:1595 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_process+0x4b03/0x80f0 kernel/fork.c:2307
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline]
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x127/0x2150 mm/mmap.c:1716
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:552 [inline]
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x1c9/0x2150 mm/mmap.c:1723
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1354 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range mm/memory.c:1490 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pud_range mm/memory.c:1527 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_p4d_range mm/memory.c:1551 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_page_range+0xd57/0x5630 mm/memory.c:1637
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #8: ffffc900001b8c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 2985 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1dc/0x222 kernel/sched/core.c:9256
 __cancel_work_sync kernel/workqueue.c:4561 [inline]
 cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4642
 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x61/0xc0 kernel/rcu/tree.c:753
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 03 1c ed e0 4b 4b 89 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 25 8b 03 c1 e8 02
RSP: 0018:ffffc900016c73d8 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff8881f57339e8 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff87d2b700 RDI: ffffffff894b4be8
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
 trace_lock_release include/trace/events/lock.h:68 [inline]
 lock_release+0x24d/0x310 kernel/locking/lockdep.c:5954
 rcu_lock_release include/linux/rcupdate.h:319 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:971 [inline]
 pfn_valid+0x1e8/0x4b0 include/linux/mmzone.h:2286
 page_table_check_set+0x25/0x580 mm/page_table_check.c:105
 __page_table_check_ptes_set+0x217/0x270 mm/page_table_check.c:223
 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:1200 [inline]
 copy_present_ptes mm/memory.c:1279 [inline]
 copy_pte_range mm/memory.c:1402 [inline]
 copy_pmd_range mm/memory.c:1490 [inline]
 copy_pud_range mm/memory.c:1527 [inline]
 copy_p4d_range mm/memory.c:1551 [inline]
 copy_page_range+0x2206/0x5630 mm/memory.c:1637
 dup_mmap+0x1205/0x2150 mm/mmap.c:1819
 dup_mm kernel/fork.c:1543 [inline]
 copy_mm kernel/fork.c:1595 [inline]
 copy_process+0x4b0e/0x80f0 kernel/fork.c:2307
 kernel_clone+0x176/0x9d0 kernel/fork.c:2766
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2908
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b829d6bd2
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:00007fff66dee3b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff66dee3b0 RCX: 00007f3b829d6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff66dee53c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555570bce7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000082c34 R15: 00007fff66dee590
 </TASK>

=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G        W          
-----------------------------
kernel/rcu/srcutree.c:1464 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/2985: 9, last CPU#1:
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1542 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm kernel/fork.c:1595 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_process+0x4b03/0x80f0 kernel/fork.c:2307
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline]
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x127/0x2150 mm/mmap.c:1716
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:552 [inline]
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x1c9/0x2150 mm/mmap.c:1723
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1354 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range mm/memory.c:1490 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pud_range mm/memory.c:1527 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_p4d_range mm/memory.c:1551 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_page_range+0xd57/0x5630 mm/memory.c:1637
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #8: ffffc900001b8c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 1 UID: 0 PID: 2985 Comm: syz-executor Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 lockdep_rcu_suspicious.cold+0x4f/0xb2 kernel/locking/lockdep.c:6972
 __synchronize_srcu+0x29d/0x300 kernel/rcu/srcutree.c:1464
 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
 wakeup_source_unregister.part.0+0x12c/0x540 drivers/base/power/wakeup.c:237
 wakeup_source_unregister+0x1f/0x30 drivers/base/power/wakeup.c:236
 mmc_host_classdev_release+0x42/0x120 drivers/mmc/core/host.c:69
 device_release+0xd2/0x270 drivers/base/core.c:2640
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3884
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x61/0xc0 kernel/rcu/tree.c:753
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 03 1c ed e0 4b 4b 89 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 25 8b 03 c1 e8 02
RSP: 0018:ffffc900016c73d8 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff8881f57339e8 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff87d2b700 RDI: ffffffff894b4be8
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
 trace_lock_release include/trace/events/lock.h:68 [inline]
 lock_release+0x24d/0x310 kernel/locking/lockdep.c:5954
 rcu_lock_release include/linux/rcupdate.h:319 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:971 [inline]
 pfn_valid+0x1e8/0x4b0 include/linux/mmzone.h:2286
 page_table_check_set+0x25/0x580 mm/page_table_check.c:105
 __page_table_check_ptes_set+0x217/0x270 mm/page_table_check.c:223
 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:1200 [inline]
 copy_present_ptes mm/memory.c:1279 [inline]
 copy_pte_range mm/memory.c:1402 [inline]
 copy_pmd_range mm/memory.c:1490 [inline]
 copy_pud_range mm/memory.c:1527 [inline]
 copy_p4d_range mm/memory.c:1551 [inline]
 copy_page_range+0x2206/0x5630 mm/memory.c:1637
 dup_mmap+0x1205/0x2150 mm/mmap.c:1819
 dup_mm kernel/fork.c:1543 [inline]
 copy_mm kernel/fork.c:1595 [inline]
 copy_process+0x4b0e/0x80f0 kernel/fork.c:2307
 kernel_clone+0x176/0x9d0 kernel/fork.c:2766
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2908
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b829d6bd2
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:00007fff66dee3b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff66dee3b0 RCX: 00007f3b829d6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff66dee53c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555570bce7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000082c34 R15: 00007fff66dee590
 </TASK>
BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1472
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 29
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2985, name: syz-executor
preempt_count: 104, expected: 0
RCU nest depth: 2, expected: 0
locks held by syz-executor/2985: 9, last CPU#1:
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1542 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm kernel/fork.c:1595 [inline]
 #0: ffffffff89a313b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_process+0x4b03/0x80f0 kernel/fork.c:2307
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline]
 #1: ffff88810d33db38 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap+0x127/0x2150 mm/mmap.c:1716
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:552 [inline]
 #2: ffff888104a92938 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap+0x1c9/0x2150 mm/mmap.c:1723
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #4: ffff88810fb58f78 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #5: ffffffff898e4c20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pte_range mm/memory.c:1354 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pmd_range mm/memory.c:1490 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_pud_range mm/memory.c:1527 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_p4d_range mm/memory.c:1551 [inline]
 #6: ffff888131b6a738 (ptlock_ptr(ptdesc)#2/1){+.+.}-{3:3}, at: copy_page_range+0xd57/0x5630 mm/memory.c:1637
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #7: ffffffff898e4b60 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #8: ffffc900001b8c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 2985 Comm: syz-executor Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1dc/0x222 kernel/sched/core.c:9256
 __synchronize_srcu+0x13c/0x300 kernel/rcu/srcutree.c:1472
 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
 wakeup_source_unregister.part.0+0x12c/0x540 drivers/base/power/wakeup.c:237
 wakeup_source_unregister+0x1f/0x30 drivers/base/power/wakeup.c:236
 mmc_host_classdev_release+0x42/0x120 drivers/mmc/core/host.c:69
 device_release+0xd2/0x270 drivers/base/core.c:2640
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3884
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x61/0xc0 kernel/rcu/tree.c:753
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 03 1c ed e0 4b 4b 89 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 25 8b 03 c1 e8 02
RSP: 0018:ffffc900016c73d8 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff8881f57339e8 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff87d2b700 RDI: ffffffff894b4be8
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
 trace_lock_release include/trace/events/lock.h:68 [inline]
 lock_release+0x24d/0x310 kernel/locking/lockdep.c:5954
 rcu_lock_release include/linux/rcupdate.h:319 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:971 [inline]
 pfn_valid+0x1e8/0x4b0 include/linux/mmzone.h:2286
 page_table_check_set+0x25/0x580 mm/page_table_check.c:105
 __page_table_check_ptes_set+0x217/0x270 mm/page_table_check.c:223
 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:1200 [inline]
 copy_present_ptes mm/memory.c:1279 [inline]
 copy_pte_range mm/memory.c:1402 [inline]
 copy_pmd_range mm/memory.c:1490 [inline]
 copy_pud_range mm/memory.c:1527 [inline]
 copy_p4d_range mm/memory.c:1551 [inline]
 copy_page_range+0x2206/0x5630 mm/memory.c:1637
 dup_mmap+0x1205/0x2150 mm/mmap.c:1819
 dup_mm kernel/fork.c:1543 [inline]
 copy_mm kernel/fork.c:1595 [inline]
 copy_process+0x4b0e/0x80f0 kernel/fork.c:2307
 kernel_clone+0x176/0x9d0 kernel/fork.c:2766
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2908
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b829d6bd2
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:00007fff66dee3b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff66dee3b0 RCX: 00007f3b829d6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff66dee53c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555570bce7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000082c34 R15: 00007fff66dee590
 </TASK>
ODEBUG: object ffffc900001b8a60 is NOT on stack ffffc900016c0000, but annotated.
------------[ cut here ]------------
1
WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#1: syz-executor/2985
WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc.part.0.cold+0x19/0x40 lib/debugobjects.c:705, CPU#1: syz-executor/2985
Modules linked in:
CPU: 1 UID: 0 PID: 2985 Comm: syz-executor Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:672 [inline]
RIP: 0010:lookup_object_or_alloc.part.0.cold+0x19/0x40 lib/debugobjects.c:705
Code: c4 60 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 83 c5 01 89 2d 60 bc 0e 13 4c 89 e6 48 c7 c7 c0 c2 d2 87 e8 61 c3 fa ff 90 <0f> 0b 90 e9 12 3b bb 01 83 c5 01 89 2d 3f bc 0e 13 49 39 c4 73 da
RSP: 0018:ffffc900001b88f0 EFLAGS: 00010082
RAX: 0000000000000050 RBX: ffff88811a8b7930 RCX: 0000000000000000
RDX: 0000000000000050 RSI: ffffffff81938669 RDI: fffff5200003710f
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000105 R11: 0000000000000001 R12: ffffc900001b8a60
R13: ffff88810fb95ac0 R14: 0000000000000001 R15: 0000000000000000
FS:  0000555570bce500(0000) GS:ffff8882684e2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b837656c8 CR3: 0000000128a02000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 lookup_object_or_alloc lib/debugobjects.c:682 [inline]
 __debug_object_init+0x2a9/0x3d0 lib/debugobjects.c:798
 __synchronize_srcu+0x1c3/0x300 kernel/rcu/srcutree.c:1475
 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
 wakeup_source_unregister.part.0+0x12c/0x540 drivers/base/power/wakeup.c:237
 wakeup_source_unregister+0x1f/0x30 drivers/base/power/wakeup.c:236
 mmc_host_classdev_release+0x42/0x120 drivers/mmc/core/host.c:69
 device_release+0xd2/0x270 drivers/base/core.c:2640
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3884
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x61/0xc0 kernel/rcu/tree.c:753
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5d 48 03 1c ed e0 4b 4b 89 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 25 8b 03 c1 e8 02
RSP: 0018:ffffc900016c73d8 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff8881f57339e8 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff87d2b700 RDI: ffffffff894b4be8
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
 trace_lock_release include/trace/events/lock.h:68 [inline]
 lock_release+0x24d/0x310 kernel/locking/lockdep.c:5954
 rcu_lock_release include/linux/rcupdate.h:319 [inline]
 rcu_read_unlock_sched include/linux/rcupdate.h:971 [inline]
 pfn_valid+0x1e8/0x4b0 include/linux/mmzone.h:2286
 page_table_check_set+0x25/0x580 mm/page_table_check.c:105
 __page_table_check_ptes_set+0x217/0x270 mm/page_table_check.c:223
 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:1200 [inline]
 copy_present_ptes mm/memory.c:1279 [inline]
 copy_pte_range mm/memory.c:1402 [inline]
 copy_pmd_range mm/memory.c:1490 [inline]
 copy_pud_range mm/memory.c:1527 [inline]
 copy_p4d_range mm/memory.c:1551 [inline]
 copy_page_range+0x2206/0x5630 mm/memory.c:1637
 dup_mmap+0x1205/0x2150 mm/mmap.c:1819
 dup_mm kernel/fork.c:1543 [inline]
 copy_mm kernel/fork.c:1595 [inline]
 copy_process+0x4b0e/0x80f0 kernel/fork.c:2307
 kernel_clone+0x176/0x9d0 kernel/fork.c:2766
 __do_sys_clone+0xd9/0x120 kernel/fork.c:2908
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b829d6bd2
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:00007fff66dee3b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff66dee3b0 RCX: 00007f3b829d6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff66dee53c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555570bce7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000082c34 R15: 00007fff66dee590
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	75 5d                	jne    0x6a
   d:	48 03 1c ed e0 4b 4b 	add    -0x76b4b420(,%rbp,8),%rbx
  14:	89
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 89 da             	mov    %rbx,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
* 2a:	48 89 d8             	mov    %rbx,%rax <-- trapping instruction
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 03             	add    $0x3,%eax
  33:	38 d0                	cmp    %dl,%al
  35:	7c 04                	jl     0x3b
  37:	84 d2                	test   %dl,%dl
  39:	75 25                	jne    0x60
  3b:	8b 03                	mov    (%rbx),%eax
  3d:	c1 e8 02             	shr    $0x2,%eax