=============================
[ BUG: Invalid wait context ]
6.13.0-rc5-syzkaller-00163-gab75170520d4 #0 Not tainted
-----------------------------
sshd/5915 is trying to lock:
ffffffff8e3a41b8 (stack_list_lock){-.-.}-{3:3}, at: add_stack_record_to_list mm/page_owner.c:182 [inline]
ffffffff8e3a41b8 (stack_list_lock){-.-.}-{3:3}, at: inc_stack_record_count mm/page_owner.c:214 [inline]
ffffffff8e3a41b8 (stack_list_lock){-.-.}-{3:3}, at: __set_page_owner+0x3ea/0x560 mm/page_owner.c:329
other info that might help us debug this:
context-{2:2}
5 locks held by sshd/5915:
#0: ffff8880245cbc60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_downgrade include/linux/mmap_lock.h:138 [inline]
#0: ffff8880245cbc60 (&mm->mmap_lock){++++}-{4:4}, at: vms_complete_munmap_vmas+0x70c/0x980 mm/vma.c:1180
#1: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#1: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#1: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x42/0x540 mm/pgtable-generic.c:287
#2: ffff888025531558 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff888025531558 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0xf1/0x300 mm/pgtable-generic.c:402
#3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#3: ffffffff8e1bb900 (rcu_read_lock){....}-{1:3}, at: page_ext_get+0x34/0x310 mm/page_ext.c:525
#4: ffff88806a83ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
stack backtrace:
CPU: 2 UID: 0 PID: 5915 Comm: sshd Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
check_wait_context kernel/locking/lockdep.c:4898 [inline]
__lock_acquire+0x878/0x3c40 kernel/locking/lockdep.c:5176
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
add_stack_record_to_list mm/page_owner.c:182 [inline]
inc_stack_record_count mm/page_owner.c:214 [inline]
__set_page_owner+0x3ea/0x560 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
stack_depot_save_flags+0x8aa/0x9c0 lib/stackdepot.c:627
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
__kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:544
task_work_add+0xc0/0x3b0 kernel/task_work.c:77
task_tick_numa kernel/sched/fair.c:3616 [inline]
task_tick_fair+0x524/0x8e0 kernel/sched/fair.c:13101
sched_tick+0x1dd/0x4f0 kernel/sched/core.c:5652
update_process_times+0x19c/0x2d0 kernel/time/timer.c:2524
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x376/0x530 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x5fb/0xae0 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_sub_return include/linux/atomic/atomic-arch-fallback.h:787 [inline]
RIP: 0010:raw_atomic_dec_return include/linux/atomic/atomic-arch-fallback.h:1238 [inline]
RIP: 0010:atomic_dec_return include/linux/atomic/atomic-instrumented.h:611 [inline]
RIP: 0010:page_table_check_clear.part.0+0x1ec/0x540 mm/page_table_check.c:87
Code: b0 91 ff 8b 44 24 08 85 c0 0f 85 9f 02 00 00 e8 0a ae 91 ff be 04 00 00 00 48 89 df e8 fd 61 f4 ff b8 ff ff ff ff f0 0f c1 03 <8d> 58 ff 31 ff 89 de e8 28 b0 91 ff 85 db 0f 88 78 02 00 00 e8 db
RSP: 0018:ffffc900049d7530 EFLAGS: 00000257
RAX: 0000000000000001 RBX: ffff88801cd8ed38 RCX: ffffffff82086813
RDX: ffffed10039b1da8 RSI: 0000000000000004 RDI: ffff88801cd8ed38
RBP: ffff88801cd8ecf0 R08: 0000000000000001 R09: ffffed10039b1da7
R10: ffff88801cd8ed3b R11: 0000000000000003 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000
page_table_check_clear mm/page_table_check.c:70 [inline]
__page_table_check_pte_clear+0x328/0x580 mm/page_table_check.c:169
page_table_check_pte_clear include/linux/page_table_check.h:49 [inline]
ptep_get_and_clear arch/x86/include/asm/pgtable.h:1321 [inline]
ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1339 [inline]
clear_full_ptes include/linux/pgtable.h:742 [inline]
zap_present_folio_ptes mm/memory.c:1515 [inline]
zap_present_ptes mm/memory.c:1585 [inline]
zap_pte_range mm/memory.c:1627 [inline]
zap_pmd_range mm/memory.c:1753 [inline]
zap_pud_range mm/memory.c:1782 [inline]
zap_p4d_range mm/memory.c:1803 [inline]
unmap_page_range+0x1a5b/0x3d10 mm/memory.c:1824
unmap_single_vma+0x194/0x2b0 mm/memory.c:1870
unmap_vmas+0x22f/0x490 mm/memory.c:1914
vms_clear_ptes+0x426/0x780 mm/vma.c:1136
vms_complete_munmap_vmas+0x1ca/0x980 mm/vma.c:1185
do_vmi_align_munmap+0x619/0x890 mm/vma.c:1444
do_vmi_munmap+0x20b/0x3e0 mm/vma.c:1492
__vm_munmap+0x14f/0x340 mm/mmap.c:1368
__do_sys_munmap mm/mmap.c:1385 [inline]
__se_sys_munmap mm/mmap.c:1382 [inline]
__x64_sys_munmap+0x59/0x80 mm/mmap.c:1382
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f853391d817
Code: ff ff 76 10 48 8b 15 10 36 0d 00 f7 d8 64 89 02 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 35 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007fffb9804d88 EFLAGS: 00000207 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: fffffffffffffe98 RCX: 00007f853391d817
RDX: 0000000000000000 RSI: 00000000002f9000 RDI: 00007f8533556000
RBP: 0000000000000020 R08: 00007f8533556000 R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000207 R12: 00007f8533556000
R13: 00007f8533556010 R14: 00000000002f8000 R15: 00007fffb9804f68
</TASK>
----------------
Code disassembly (best guess), 3 bytes skipped:
0: 8b 44 24 08 mov 0x8(%rsp),%eax
4: 85 c0 test %eax,%eax
6: 0f 85 9f 02 00 00 jne 0x2ab
c: e8 0a ae 91 ff call 0xff91ae1b
11: be 04 00 00 00 mov $0x4,%esi
16: 48 89 df mov %rbx,%rdi
19: e8 fd 61 f4 ff call 0xfff4621b
1e: b8 ff ff ff ff mov $0xffffffff,%eax
23: f0 0f c1 03 lock xadd %eax,(%rbx)
* 27: 8d 58 ff lea -0x1(%rax),%ebx <-- trapping instruction
2a: 31 ff xor %edi,%edi
2c: 89 de mov %ebx,%esi
2e: e8 28 b0 91 ff call 0xff91b05b
33: 85 db test %ebx,%ebx
35: 0f 88 78 02 00 00 js 0x2b3
3b: e8 .byte 0xe8
3c: db .byte 0xdb