============================================
WARNING: possible recursive locking detected
5.15.164-syzkaller #0 Not tainted
--------------------------------------------
syz-executor754/3570 is trying to acquire lock:
ffff8880b9b35bb8 (lock#8){+.+.}-{2:2}, at: local_lock_acquire+0xd/0x170 include/linux/local_lock_internal.h:28
but task is already holding lock:
ffff8880b9b35bb8 (lock#8){+.+.}-{2:2}, at: local_lock_acquire+0xd/0x170 include/linux/local_lock_internal.h:28
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(lock#8);
lock(lock#8);
*** DEADLOCK ***
May be due to missing lock nesting notation
5 locks held by syz-executor754/3570:
#0: ffff888024f30f28 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff888024f30f28 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1298 [inline]
#0: ffff888024f30f28 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1445 [inline]
#0: ffff888024f30f28 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x181/0x700 arch/x86/mm/fault.c:1501
#1: ffff8880b9b35bb8 (lock#8){+.+.}-{2:2}, at: local_lock_acquire+0xd/0x170 include/linux/local_lock_internal.h:28
#2: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
#3: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
#4: ffff888024f30f28 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#4: ffff888024f30f28 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x23e/0x930 kernel/bpf/stackmap.c:185
stack backtrace:
CPU: 1 PID: 3570 Comm: syz-executor754 Not tainted 5.15.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2946 [inline]
check_deadlock kernel/locking/lockdep.c:2989 [inline]
validate_chain+0x46d2/0x5930 kernel/locking/lockdep.c:3775
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
local_lock_acquire+0x29/0x170 include/linux/local_lock_internal.h:29
__mmap_lock_do_trace_acquire_returned+0x7c/0x340 mm/mmap_lock.c:237
__mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline]
mmap_read_trylock include/linux/mmap_lock.h:137 [inline]
stack_map_get_build_id_offset+0x612/0x930 kernel/bpf/stackmap.c:185
__bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:496
____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1490 [inline]
bpf_get_stack_raw_tp+0x1b2/0x220 kernel/trace/bpf_trace.c:1480
bpf_prog_ec3b2eefa702d8d3+0x3a/0xee0
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:1880 [inline]
bpf_trace_run4+0x1ea/0x390 kernel/trace/bpf_trace.c:1919
trace_mmap_lock_acquire_returned include/trace/events/mmap_lock.h:44 [inline]
__mmap_lock_do_trace_acquire_returned+0x2d6/0x340 mm/mmap_lock.c:237
__mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline]
mmap_read_trylock include/linux/mmap_lock.h:137 [inline]
do_user_addr_fault arch/x86/mm/fault.c:1298 [inline]
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x564/0x700 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7f51fdd2b840
Code: 89 24 25 f8 00 00 20 44 89 24 25 fc 00 00 20 4c 89 2c 25 00 01 00 20 0f 11 04 25 dc 00 00 20 e8 d6 15 03 00 48 83 f8 ff 74 07 <48> 89 05 89 88 0a 00 31 d2 31 c9 48 8d 35 26 a8 07 00 45 31 c9 89
RSP: 002b:00007ffe44c470c0 EFLAGS: 00010213
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 00007f51fdd5ce29
RDX: 0000000000000048 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffe44c470e0 R15: 00007ffe44c470d0
</TASK>