================================ WARNING: inconsistent lock state 6.1.87-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.1/4142 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9935e90 (lock#10){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9935e90 (lock#10){?.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 mm/mmap_lock.c:237 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 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] get_mmap_lock_carefully mm/memory.c:5304 [inline] lock_mm_and_find_vma+0x219/0x2e0 mm/memory.c:5366 do_user_addr_fault arch/x86/mm/fault.c:1343 [inline] handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x169/0x660 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 irq event stamp: 166 hardirqs last enabled at (165): [] seqcount_lockdep_reader_access+0x137/0x1e0 include/linux/seqlock.h:104 hardirqs last disabled at (166): [] sysvec_call_function_single+0xa/0xb0 arch/x86/kernel/smp.c:262 softirqs last enabled at (98): [] __fpu_restore_sig arch/x86/kernel/fpu/signal.c:359 [inline] softirqs last enabled at (98): [] fpu__restore_sig+0x510/0x1300 arch/x86/kernel/fpu/signal.c:493 softirqs last disabled at (96): [] __fpu_restore_sig arch/x86/kernel/fpu/signal.c:359 [inline] softirqs last disabled at (96): [] fpu__restore_sig+0x510/0x1300 arch/x86/kernel/fpu/signal.c:493 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock#10); *** DEADLOCK *** 2 locks held by syz-executor.1/4142: #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline] #0: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 kernel/trace/bpf_trace.c:2312 #1: ffff88807d1a4c58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #1: ffff88807d1a4c58 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 1 PID: 4142 Comm: syz-executor.1 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 valid_state+0x136/0x1c0 kernel/locking/lockdep.c:3969 mark_lock_irq+0xa8/0xba0 kernel/locking/lockdep.c:4172 mark_lock+0x21c/0x340 kernel/locking/lockdep.c:4628 mark_usage kernel/locking/lockdep.c:4520 [inline] __lock_acquire+0xb40/0x1f80 kernel/locking/lockdep.c:5003 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 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+0x99e/0x9c0 kernel/bpf/stackmap.c:144 __bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:452 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1877 [inline] bpf_get_stack_raw_tp+0x1b2/0x220 kernel/trace/bpf_trace.c:1867 bpf_prog_e6cf5f9c69743609+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2312 trace_tlb_flush+0x151/0x1a0 include/trace/events/tlb.h:38 flush_tlb_func+0x4e3/0x620 arch/x86/mm/tlb.c:875 __flush_smp_call_function_queue+0x2d9/0xd00 kernel/smp.c:641 __sysvec_call_function_single+0xbb/0x360 arch/x86/kernel/smp.c:267 sysvec_call_function_single+0x89/0xb0 arch/x86/kernel/smp.c:262 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:661 RIP: 0010:seqcount_lockdep_reader_access+0x185/0x1e0 include/linux/seqlock.h:105 Code: 42 80 3c 23 00 74 08 4c 89 ff e8 d6 fd 0a 00 f6 44 24 41 02 75 4c f7 44 24 18 00 02 00 00 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <4b> c7 04 34 00 00 00 00 66 43 c7 44 34 09 00 00 43 c6 44 34 0b 00 RSP: 0018:ffffc900090df780 EFLAGS: 00000206 RAX: c8e6943de4436300 RBX: 1ffff9200121bef8 RCX: ffffffff91c92103 RDX: dffffc0000000000 RSI: ffffffff8aec01c0 RDI: ffffffff8b3d4320 RBP: ffffc900090df860 R08: dffffc0000000000 R09: fffffbfff1ce6eee R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88813fffa7c8 R14: 1ffff9200121bef4 R15: ffffc900090df7c0 read_seqbegin include/linux/seqlock.h:836 [inline] zone_span_seqbegin include/linux/memory_hotplug.h:132 [inline] page_outside_zone_boundaries mm/page_alloc.c:627 [inline] bad_range+0x7a/0x2c0 mm/page_alloc.c:654 rmqueue mm/page_alloc.c:3851 [inline] get_page_from_freelist+0x3185/0x3320 mm/page_alloc.c:4276 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5547 __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_pages_node include/linux/gfp.h:260 [inline] bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:130 [inline] bpf_ringbuf_alloc+0xcb/0x420 kernel/bpf/ringbuf.c:167 ringbuf_map_alloc+0x1cf/0x2f0 kernel/bpf/ringbuf.c:207 find_and_alloc_map kernel/bpf/syscall.c:131 [inline] map_create+0x4c0/0xd20 kernel/bpf/syscall.c:1128 __sys_bpf+0x2d3/0x6c0 kernel/bpf/syscall.c:4987 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f31aa67dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f31a91f60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f31aa7abf80 RCX: 00007f31aa67dea9 RDX: 0000000000000048 RSI: 00000000200007c0 RDI: 0000000000000000 RBP: 00007f31aa6ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f31aa7abf80 R15: 00007ffeeb8baf18 ---------------- Code disassembly (best guess): 0: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) 5: 74 08 je 0xf 7: 4c 89 ff mov %r15,%rdi a: e8 d6 fd 0a 00 call 0xafde5 f: f6 44 24 41 02 testb $0x2,0x41(%rsp) 14: 75 4c jne 0x62 16: f7 44 24 18 00 02 00 testl $0x200,0x18(%rsp) 1d: 00 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 20 0e 36 movq $0x45e0360e,0x20(%rsp) 28: e0 45 * 2a: 4b c7 04 34 00 00 00 movq $0x0,(%r12,%r14,1) <-- trapping instruction 31: 00 32: 66 43 c7 44 34 09 00 movw $0x0,0x9(%r12,%r14,1) 39: 00 3a: 43 c6 44 34 0b 00 movb $0x0,0xb(%r12,%r14,1)