================================ WARNING: inconsistent lock state 6.1.87-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.2/11398 [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_lock include/linux/mmap_lock.h:118 [inline] __mm_populate+0x332/0x440 mm/gup.c:1683 mm_populate include/linux/mm.h:2797 [inline] vm_mmap_pgoff+0x22b/0x2d0 mm/util.c:525 ksys_mmap_pgoff+0x4f5/0x6d0 mm/mmap.c:1471 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: 100 hardirqs last enabled at (99): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (99): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (100): [] sysvec_call_function_single+0xa/0xb0 arch/x86/kernel/smp.c:262 softirqs last enabled at (86): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last enabled at (86): [] fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline] softirqs last enabled at (86): [] fpu__clear_user_states+0x37/0x260 arch/x86/kernel/fpu/core.c:711 softirqs last disabled at (84): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (84): [] fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline] softirqs last disabled at (84): [] fpu__clear_user_states+0x37/0x260 arch/x86/kernel/fpu/core.c:711 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.2/11398: #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: ffff88805e1cb5d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #1: ffff88805e1cb5d8 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 0 PID: 11398 Comm: syz-executor.2 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 __traceiter_tlb_flush+0x6c/0xc0 include/trace/events/tlb.h:38 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:restore_sigcontext+0x152/0x700 arch/x86/kernel/signal.c:104 Code: e8 13 1b b2 00 4c 8b a4 24 d0 00 00 00 49 8d 5d 58 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 71 1b b2 00 4c 89 23 <49> 8d 7f 60 48 89 f8 48 c1 e8 03 42 80 3c 30 00 74 05 e8 d7 1a b2 RSP: 0018:ffffc9000d5ffc60 EFLAGS: 00000246 RAX: 1ffff92001abfff6 RBX: ffffc9000d5fffb0 RCX: 0000000000040000 RDX: ffffc900053d1000 RSI: 00000000000001e3 RDI: ffffc9000d5ffd30 RBP: ffffc9000d5ffe50 R08: ffffffff8438221f R09: fffff52001abffb0 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffffc9000d5fff58 R14: dffffc0000000000 R15: ffffc9000d5ffcc0 __do_sys_rt_sigreturn+0x190/0x250 arch/x86/kernel/signal.c:675 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: 0033:0x7ff366241309 Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25 RSP: 002b:00007ff3670aa6c0 EFLAGS: 00000202 ORIG_RAX: 000000000000000f RAX: ffffffffffffffda RBX: 00007ff3663abf80 RCX: 0000000000000000 RDX: 00007ff3670aa6c0 RSI: 00007ff3670aa7f0 RDI: 0000000000000021 RBP: 00007ff3662ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020002c80 R11: 0000000000000202 R12: 0000000000000000 R13: 000000000000000b R14: 00007ff3663abf80 R15: 00007fff94549af8 ---------------- Code disassembly (best guess): 0: e8 13 1b b2 00 call 0xb21b18 5: 4c 8b a4 24 d0 00 00 mov 0xd0(%rsp),%r12 c: 00 d: 49 8d 5d 58 lea 0x58(%r13),%rbx 11: 48 89 d8 mov %rbx,%rax 14: 48 c1 e8 03 shr $0x3,%rax 18: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 1d: 74 08 je 0x27 1f: 48 89 df mov %rbx,%rdi 22: e8 71 1b b2 00 call 0xb21b98 27: 4c 89 23 mov %r12,(%rbx) * 2a: 49 8d 7f 60 lea 0x60(%r15),%rdi <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 48 c1 e8 03 shr $0x3,%rax 35: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 3a: 74 05 je 0x41 3c: e8 .byte 0xe8 3d: d7 xlat %ds:(%rbx) 3e: 1a .byte 0x1a 3f: b2 .byte 0xb2