BUG: MAX_STACK_TRACE_ENTRIES too low!
turning off the locking correctness validator.
CPU: 1 PID: 1358 Comm: syz-executor265 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
save_trace+0x85f/0xa80 kernel/locking/lockdep.c:547
mark_lock+0x1b9/0x320 kernel/locking/lockdep.c:4586
mark_usage kernel/locking/lockdep.c:-1 [inline]
__lock_acquire+0xc55/0x7c60 kernel/locking/lockdep.c:4966
lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
htab_lock_bucket kernel/bpf/hashtab.c:183 [inline]
htab_lru_map_delete_elem+0x1b1/0x640 kernel/bpf/hashtab.c:1397
bpf_prog_d284ea97e99fac5b+0x3f/0xbd0
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
__traceiter_kfree+0x26/0x40 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x25f/0x2a0 mm/slub.c:4549
__bpf_prog_put_rcu+0x37/0xb0 kernel/bpf/syscall.c:1780
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:71 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
RIP: 0010:lock_page_memcg+0x20c/0x410 mm/memcontrol.c:2062
Code: ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 f6 44 24 41 02 0f 85 f9 00 00 00 f7 c3 00 02 00 00 74 01 fb 4d 8d af 80 10 00 00 <4c> 89 ef be 04 00 00 00 e8 67 95 fb ff 4c 89 e8 48 c1 e8 03 48 b9
RSP: 0018:ffffc9000352f420 EFLAGS: 00000206
RAX: eba566c0fcab3500 RBX: 0000000000000286 RCX: eba566c0fcab3500
RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59ab80
RBP: ffffc9000352f4f8 R08: dffffc0000000000 R09: fffffbfff1ff7419
R10: fffffbfff1ff7419 R11: 1ffffffff1ff7418 R12: ffff888016a7c670
R13: ffff888016a7d080 R14: ffffea0001a27ef8 R15: ffff888016a7c000
page_remove_rmap+0x2a/0x10f0 mm/rmap.c:1351
zap_pte_range mm/memory.c:1384 [inline]
zap_pmd_range mm/memory.c:1505 [inline]
zap_pud_range mm/memory.c:1534 [inline]
zap_p4d_range mm/memory.c:1555 [inline]
unmap_page_range+0xfbc/0x2520 mm/memory.c:1576
unmap_vmas+0x11b/0x230 mm/memory.c:1653
exit_mmap+0x38f/0x5f0 mm/mmap.c:3212
__mmput+0x115/0x3b0 kernel/fork.c:1127
exit_mm+0x567/0x6c0 kernel/exit.c:550
do_exit+0x5a1/0x20a0 kernel/exit.c:870
do_group_exit+0x12e/0x300 kernel/exit.c:997
get_signal+0x6ca/0x12c0 kernel/signal.c:2900
arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4e5352d659
Code: Unable to access opcode bytes at RIP 0x7f4e5352d62f.
RSP: 002b:00007f4e534ee238 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f4e535b7328 RCX: 00007f4e5352d659
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4e535b7328
RBP: 00007f4e535b7320 R08: 00007f4e534ee6c0 R09: 00007f4e534ee6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 656c6c616b7a7973
R13: 0000000000000000 R14: 00007ffd33bde1d0 R15: 00007ffd33bde2b8
----------------
Code disassembly (best guess):
0: ff 48 c7 decl -0x39(%rax)
3: 44 24 40 rex.R and $0x40,%al
6: 00 00 add %al,(%rax)
8: 00 00 add %al,(%rax)
a: 9c pushf
b: 8f 44 24 40 pop 0x40(%rsp)
f: f6 44 24 41 02 testb $0x2,0x41(%rsp)
14: 0f 85 f9 00 00 00 jne 0x113
1a: f7 c3 00 02 00 00 test $0x200,%ebx
20: 74 01 je 0x23
22: fb sti
23: 4d 8d af 80 10 00 00 lea 0x1080(%r15),%r13
* 2a: 4c 89 ef mov %r13,%rdi <-- trapping instruction
2d: be 04 00 00 00 mov $0x4,%esi
32: e8 67 95 fb ff call 0xfffb959e
37: 4c 89 e8 mov %r13,%rax
3a: 48 c1 e8 03 shr $0x3,%rax
3e: 48 rex.W
3f: b9 .byte 0xb9