============================= [ BUG: Invalid wait context ] 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0 Not tainted ----------------------------- syz-executor/5834 is trying to lock: ffff88805889e200 (&trie->lock){..-.}-{3:3}, at: trie_delete_elem+0x96/0x6a0 kernel/bpf/lpm_trie.c:462 other info that might help us debug this: context-{5:5} 5 locks held by syz-executor/5834: #0: ffffffff8e9eb5d0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mmap kernel/fork.c:642 [inline] #0: ffffffff8e9eb5d0 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1695 [inline] #0: ffffffff8e9eb5d0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x27f/0x1f90 kernel/fork.c:1744 #1: ffff88807ab38ba0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline] #1: ffff88807ab38ba0 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap kernel/fork.c:643 [inline] #1: ffff88807ab38ba0 (&mm->mmap_lock){++++}-{4:4}, at: dup_mm kernel/fork.c:1695 [inline] #1: ffff88807ab38ba0 (&mm->mmap_lock){++++}-{4:4}, at: copy_mm+0x29d/0x1f90 kernel/fork.c:1744 #2: ffff88807ea628e0 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:113 [inline] #2: ffff88807ea628e0 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap kernel/fork.c:652 [inline] #2: ffff88807ea628e0 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mm kernel/fork.c:1695 [inline] #2: ffff88807ea628e0 (&mm->mmap_lock/1){+.+.}-{4:4}, at: copy_mm+0x3df/0x1f90 kernel/fork.c:1744 #3: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #4: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #4: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #4: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2350 [inline] #4: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2392 stack backtrace: CPU: 0 UID: 0 PID: 5834 Comm: syz-executor Not tainted 6.13.0-rc1-syzkaller-00407-g96b6fcc0ee41 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 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+0x15a8/0x2100 kernel/locking/lockdep.c:5176 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 trie_delete_elem+0x96/0x6a0 kernel/bpf/lpm_trie.c:462 bpf_prog_9b496295c5e9eeb9+0x50/0x54 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2351 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2392 trace_tlb_flush+0x11c/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x77a/0xa70 context_switch kernel/sched/core.c:5353 [inline] __schedule+0x10c8/0x4c30 kernel/sched/core.c:6756 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:rol32 include/linux/bitops.h:127 [inline] RIP: 0010:jhash2 include/linux/jhash.h:129 [inline] RIP: 0010:hash_stack lib/stackdepot.c:514 [inline] RIP: 0010:stack_depot_save_flags+0x84/0x830 lib/stackdepot.c:614 Code: 04 72 75 44 89 f3 44 89 f0 4c 8b 44 24 08 4c 89 c2 03 02 03 5a 04 44 03 72 08 44 89 f7 c1 c7 04 44 29 f0 31 c7 41 01 de 29 fb <89> fd c1 c5 06 31 dd 44 01 f7 89 e9 c1 c1 08 41 29 ee 44 31 f1 01 RSP: 0018:ffffc90003e2ee10 EFLAGS: 00000206 RAX: 00000000b069c980 RBX: 00000000052e4bb1 RCX: 00000000362b37ce RDX: ffffc90003e2eed0 RSI: 0000000000000004 RDI: 000000006318600d RBP: 00000000169cebb5 R08: ffffc90003e2ee70 R09: 000000000000000e R10: dffffc0000000000 R11: fffffbfff2033d0f R12: 0000000000000040 R13: ffffffff81f03970 R14: 00000000457dc656 R15: ffffc90003e2ee70 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4104 [inline] slab_alloc_node mm/slub.c:4153 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4160 ptlock_alloc+0x20/0x70 mm/memory.c:6953 ptlock_init include/linux/mm.h:2970 [inline] pagetable_pte_ctor include/linux/mm.h:2997 [inline] __pte_alloc_one_noprof include/asm-generic/pgalloc.h:73 [inline] pte_alloc_one+0xd3/0x610 arch/x86/mm/pgtable.c:33 __pte_alloc+0x79/0x3c0 mm/memory.c:446 copy_pte_range mm/memory.c:1106 [inline] copy_pmd_range+0x7696/0x7eb0 mm/memory.c:1261 copy_pud_range mm/memory.c:1298 [inline] copy_p4d_range mm/memory.c:1322 [inline] copy_page_range+0x99f/0xe90 mm/memory.c:1420 dup_mmap kernel/fork.c:751 [inline] dup_mm kernel/fork.c:1695 [inline] copy_mm+0x11c7/0x1f90 kernel/fork.c:1744 copy_process+0x1845/0x3d50 kernel/fork.c:2395 kernel_clone+0x226/0x8e0 kernel/fork.c:2807 __do_sys_clone kernel/fork.c:2950 [inline] __se_sys_clone kernel/fork.c:2934 [inline] __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2934 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f839f37c593 Code: Unable to access opcode bytes at 0x7f839f37c569. RSP: 002b:00007ffd582007e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f839f37c593 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000555573a9c7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000002263b R14: 00007ffd58200970 R15: 0000000000000079 ---------------- Code disassembly (best guess): 0: 04 72 add $0x72,%al 2: 75 44 jne 0x48 4: 89 f3 mov %esi,%ebx 6: 44 89 f0 mov %r14d,%eax 9: 4c 8b 44 24 08 mov 0x8(%rsp),%r8 e: 4c 89 c2 mov %r8,%rdx 11: 03 02 add (%rdx),%eax 13: 03 5a 04 add 0x4(%rdx),%ebx 16: 44 03 72 08 add 0x8(%rdx),%r14d 1a: 44 89 f7 mov %r14d,%edi 1d: c1 c7 04 rol $0x4,%edi 20: 44 29 f0 sub %r14d,%eax 23: 31 c7 xor %eax,%edi 25: 41 01 de add %ebx,%r14d 28: 29 fb sub %edi,%ebx * 2a: 89 fd mov %edi,%ebp <-- trapping instruction 2c: c1 c5 06 rol $0x6,%ebp 2f: 31 dd xor %ebx,%ebp 31: 44 01 f7 add %r14d,%edi 34: 89 e9 mov %ebp,%ecx 36: c1 c1 08 rol $0x8,%ecx 39: 41 29 ee sub %ebp,%r14d 3c: 44 31 f1 xor %r14d,%ecx 3f: 01 .byte 0x1