================================ WARNING: inconsistent lock state 6.1.101-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz.2.262/4728 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9835e90 (lock#11){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9835e90 (lock#11){?.+.}-{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:1312 [inline] handle_page_fault arch/x86/mm/fault.c:1431 [inline] exc_page_fault+0x169/0x620 arch/x86/mm/fault.c:1487 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 irq event stamp: 49012 hardirqs last enabled at (49011): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (49011): [] _raw_spin_unlock_irqrestore+0x8b/0x130 kernel/locking/spinlock.c:194 hardirqs last disabled at (49012): [] sysvec_call_function_single+0xa/0xb0 arch/x86/kernel/smp.c:262 softirqs last enabled at (46472): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last enabled at (46472): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (46472): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 softirqs last disabled at (46455): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last disabled at (46455): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (46455): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#11); lock(lock#11); *** DEADLOCK *** 2 locks held by syz.2.262/4728: #0: ffffffff8d32ad40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8d32ad40 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8d32ad40 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline] #0: ffffffff8d32ad40 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 kernel/trace/bpf_trace.c:2312 #1: ffff88807daadb58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #1: ffff88807daadb58 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 0 PID: 4728 Comm: syz.2.262 Not tainted 6.1.101-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 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_ec3b2eefa702d8d3+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:__mutex_lock_common kernel/locking/mutex.c:582 [inline] RIP: 0010:__mutex_lock+0xf3/0xd80 kernel/locking/mutex.c:747 Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 97 0b 00 00 83 3d 1f 30 45 07 00 75 21 49 8d 7d 60 48 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 05 e8 26 42 34 f7 4d 39 6d 60 0f 85 13 0b 00 00 bf 01 00 00 00 RSP: 0018:ffffc9000392f600 EFLAGS: 00000246 RAX: 1ffff1100f3de2b1 RBX: 0000000000000000 RCX: ffffffff91f31103 RDX: dffffc0000000000 RSI: ffff88807d0f0000 RDI: ffff888079ef1588 RBP: ffffc9000392f750 R08: dffffc0000000000 R09: ffffc9000392f6a0 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888079ef1528 R14: 0000000000000000 R15: ffff888079ef11b8 __unix_dgram_recvmsg+0x24d/0x1260 net/unix/af_unix.c:2447 ____sys_recvmsg+0x285/0x530 ___sys_recvmsg net/socket.c:2775 [inline] do_recvmmsg+0x46d/0xad0 net/socket.c:2869 __sys_recvmmsg net/socket.c:2948 [inline] __do_sys_recvmmsg net/socket.c:2971 [inline] __se_sys_recvmmsg net/socket.c:2964 [inline] __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2964 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: 0033:0x7f1785377299 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1786062048 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f1785506058 RCX: 00007f1785377299 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007f17853e48e6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f1785506058 R15: 00007fff7bf47248 ---------------- Code disassembly (best guess): 0: 48 c1 e8 03 shr $0x3,%rax 4: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax 9: 84 c0 test %al,%al b: 0f 85 97 0b 00 00 jne 0xba8 11: 83 3d 1f 30 45 07 00 cmpl $0x0,0x745301f(%rip) # 0x7453037 18: 75 21 jne 0x3b 1a: 49 8d 7d 60 lea 0x60(%r13),%rdi 1e: 48 89 f8 mov %rdi,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) * 2a: 74 05 je 0x31 <-- trapping instruction 2c: e8 26 42 34 f7 call 0xf7344257 31: 4d 39 6d 60 cmp %r13,0x60(%r13) 35: 0f 85 13 0b 00 00 jne 0xb4e 3b: bf 01 00 00 00 mov $0x1,%edi