================================ WARNING: inconsistent lock state 6.1.93-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.2/4294 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9835e90 (lock#10){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9835e90 (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: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 strncpy_from_user+0x159/0x360 lib/strncpy_from_user.c:139 strncpy_from_bpfptr include/linux/bpfptr.h:85 [inline] bpf_prog_load+0x188/0x1bb0 kernel/bpf/syscall.c:2515 __sys_bpf+0x382/0x6c0 kernel/bpf/syscall.c:5005 __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 irq event stamp: 4138 hardirqs last enabled at (4137): [] native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] hardirqs last enabled at (4137): [] arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] hardirqs last enabled at (4137): [] arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] hardirqs last enabled at (4137): [] count_memcg_events include/linux/memcontrol.h:1066 [inline] hardirqs last enabled at (4137): [] count_memcg_event_mm+0x232/0x410 include/linux/memcontrol.h:1098 hardirqs last disabled at (4138): [] sysvec_call_function_single+0xa/0xb0 arch/x86/kernel/smp.c:262 softirqs last enabled at (4080): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last enabled at (4080): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (4080): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 softirqs last disabled at (4019): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last disabled at (4019): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (4019): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock#10); *** DEADLOCK *** 5 locks held by syz-executor.2/4294: #0: ffff88814b4db730 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1748 [inline] #0: ffff88814b4db730 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: __tipc_sendstream+0x70f/0x1530 net/tipc/socket.c:1586 #1: ffff88807f7ab5d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #1: ffff88807f7ab5d8 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5304 [inline] #1: ffff88807f7ab5d8 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x2e/0x2e0 mm/memory.c:5366 #2: ffff8880762a84f8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffff8880762a84f8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: do_anonymous_page mm/memory.c:4152 [inline] #2: ffff8880762a84f8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: handle_pte_fault mm/memory.c:5011 [inline] #2: ffff8880762a84f8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: __handle_mm_fault mm/memory.c:5155 [inline] #2: ffff8880762a84f8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: handle_mm_fault+0x38c0/0x5340 mm/memory.c:5276 #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline] #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 kernel/trace/bpf_trace.c:2312 #4: ffff88807f7ab5d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #4: ffff88807f7ab5d8 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 0 PID: 4294 Comm: syz-executor.2 Not tainted 6.1.93-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:121 [inline] RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:435 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x60c/0xc50 kernel/locking/qspinlock.c:511 Code: 10 84 c0 0f 85 44 01 00 00 48 8b 04 24 c6 00 01 bb 00 80 ff ff eb 06 f3 90 ff c3 74 5d 41 0f b6 04 14 84 c0 75 36 41 80 3f 00 <75> eb 4c 89 ff be 02 00 00 00 e8 f5 88 4c f7 48 ba 00 00 00 00 00 RSP: 0018:ffffc90005366fe0 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 00000000ffff80d8 RCX: 1ffff1100ec5509c RDX: dffffc0000000000 RSI: 0000000000000002 RDI: ffff8880762a84e2 RBP: ffffc900053670d8 R08: dffffc0000000000 R09: ffffed100ec5509d R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100ec5509c R13: ffff8880b983b854 R14: 1ffff11017300001 R15: ffff8880762a84e0 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x269/0x370 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:351 [inline] do_anonymous_page mm/memory.c:4152 [inline] handle_pte_fault mm/memory.c:5011 [inline] __handle_mm_fault mm/memory.c:5155 [inline] handle_mm_fault+0x38c0/0x5340 mm/memory.c:5276 do_user_addr_fault arch/x86/mm/fault.c:1340 [inline] handle_page_fault arch/x86/mm/fault.c:1431 [inline] exc_page_fault+0x26f/0x620 arch/x86/mm/fault.c:1487 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166 Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc900053675b0 EFLAGS: 00050206 RAX: ffffffff84365001 RBX: 00007ffffffeee30 RCX: 00000000000045d0 RDX: 00000000000101d0 RSI: 00000000201cf000 RDI: ffff8880574ebce8 RBP: ffffc90005367730 R08: dffffc0000000000 R09: ffffed100ae9e057 R10: 0000000000000007 R11: dffffc0000000001 R12: 00000000000101d0 R13: 0000000000000000 R14: ffff8880574e00e8 R15: 00000000201c3400 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] copyin+0xd8/0x120 lib/iov_iter.c:183 _copy_from_iter+0x493/0xff0 lib/iov_iter.c:631 copy_from_iter include/linux/uio.h:187 [inline] copy_from_iter_full include/linux/uio.h:194 [inline] tipc_msg_build+0x47a/0x1230 net/tipc/msg.c:408 __tipc_sendstream+0xa39/0x1530 net/tipc/socket.c:1619 tipc_sendstream+0x51/0x70 net/tipc/socket.c:1550 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 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: 0033:0x7f3df407cea9 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:00007f3df4e9f0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f3df41b4050 RCX: 00007f3df407cea9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 00007f3df40ebff4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f3df41b4050 R15: 00007ffdc68082b8 ---------------- Code disassembly (best guess): 0: 10 84 c0 0f 85 44 01 adc %al,0x144850f(%rax,%rax,8) 7: 00 00 add %al,(%rax) 9: 48 8b 04 24 mov (%rsp),%rax d: c6 00 01 movb $0x1,(%rax) 10: bb 00 80 ff ff mov $0xffff8000,%ebx 15: eb 06 jmp 0x1d 17: f3 90 pause 19: ff c3 inc %ebx 1b: 74 5d je 0x7a 1d: 41 0f b6 04 14 movzbl (%r12,%rdx,1),%eax 22: 84 c0 test %al,%al 24: 75 36 jne 0x5c 26: 41 80 3f 00 cmpb $0x0,(%r15) * 2a: 75 eb jne 0x17 <-- trapping instruction 2c: 4c 89 ff mov %r15,%rdi 2f: be 02 00 00 00 mov $0x2,%esi 34: e8 f5 88 4c f7 call 0xf74c892e 39: 48 rex.W 3a: ba 00 00 00 00 mov $0x0,%edx