================================ WARNING: inconsistent lock state 6.9.0-syzkaller-12162-gf85af9d955ac #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.4/6599 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9538828 (lock#10){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9538828 (lock#10){?.+.}-{2:2}, at: __mmap_lock_do_trace_released+0x83/0x620 mm/mmap_lock.c:243 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_start_locking+0x9c/0x620 mm/mmap_lock.c:230 __mmap_lock_trace_start_locking include/linux/mmap_lock.h:29 [inline] mmap_read_lock include/linux/mmap_lock.h:143 [inline] exit_mm+0x2c1/0x310 kernel/exit.c:541 do_exit+0x9aa/0x27e0 kernel/exit.c:861 do_group_exit+0x207/0x2c0 kernel/exit.c:1023 __do_sys_exit_group kernel/exit.c:1034 [inline] __se_sys_exit_group kernel/exit.c:1032 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1032 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 irq event stamp: 308 hardirqs last enabled at (307): [] __text_poke+0x9bf/0xd30 arch/x86/kernel/alternative.c:1943 hardirqs last disabled at (308): [] sysvec_irq_work+0xe/0xc0 arch/x86/kernel/irq_work.c:17 softirqs last enabled at (0): [] rcu_lock_acquire include/linux/rcupdate.h:329 [inline] softirqs last enabled at (0): [] rcu_read_lock include/linux/rcupdate.h:781 [inline] softirqs last enabled at (0): [] copy_process+0xa03/0x3dc0 kernel/fork.c:2259 softirqs last disabled at (0): [<0000000000000000>] 0x0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock #10); *** DEADLOCK *** 8 locks held by syz-executor.4/6599: #0: ffffffff947f2e50 (&pmus_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline] #0: ffffffff947f2e50 (&pmus_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline] #0: ffffffff947f2e50 (&pmus_srcu){.+.+}-{0:0}, at: perf_init_event kernel/events/core.c:11715 [inline] #0: ffffffff947f2e50 (&pmus_srcu){.+.+}-{0:0}, at: perf_event_alloc+0xc7d/0x20a0 kernel/events/core.c:12033 #1: ffffffff8e38ea68 (event_mutex){+.+.}-{3:3}, at: perf_trace_init+0x53/0x2e0 kernel/trace/trace_event_perf.c:221 #2: ffffffff8e3808a8 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio kernel/tracepoint.c:507 [inline] #2: ffffffff8e3808a8 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register+0xb6/0x160 kernel/tracepoint.c:531 #3: ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_enable+0x12/0x20 kernel/jump_label.c:217 #4: ffffffff8e3e18c8 (jump_label_mutex){+.+.}-{3:3}, at: jump_label_lock kernel/jump_label.c:27 [inline] (jump_label_mutex){+.+.}-{3:3}, at: static_key_enable_cpuslocked+0xd7/0x260 kernel/jump_label.c:202 #5: ffffffff8e1e3548 (text_mutex){+.+.}-{3:3} , at: arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:145 #6: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #6: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #6: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: __pte_offset_map+0x82/0x380 mm/pgtable-generic.c:287 #7: ffff88801507b078 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #7: ffff88801507b078 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:375 stack backtrace: CPU: 1 PID: 6599 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-12162-gf85af9d955ac #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 valid_state+0x13a/0x1c0 kernel/locking/lockdep.c:4013 mark_lock_irq+0xbb/0xc20 kernel/locking/lockdep.c:4216 mark_lock+0x223/0x350 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:4564 [inline] __lock_acquire+0xb8e/0x1fd0 kernel/locking/lockdep.c:5091 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_released+0x9c/0x620 mm/mmap_lock.c:243 __mmap_lock_trace_released include/linux/mmap_lock.h:42 [inline] mmap_read_unlock_non_owner include/linux/mmap_lock.h:176 [inline] do_mmap_read_unlock+0x5d/0x60 kernel/bpf/task_iter.c:1049 irq_work_single+0xe2/0x240 kernel/irq_work.c:221 irq_work_run_list kernel/irq_work.c:252 [inline] irq_work_run+0x18b/0x350 kernel/irq_work.c:261 __sysvec_irq_work+0xb8/0x430 arch/x86/kernel/irq_work.c:22 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x9e/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:__text_poke+0xa4a/0xd30 arch/x86/kernel/alternative.c:1944 Code: 7c 24 50 00 75 19 e8 b5 00 61 00 eb 18 e8 ae 00 61 00 e8 59 e3 50 0a 48 83 7c 24 50 00 74 e7 e8 9c 00 61 00 fb 48 8b 44 24 78 <42> 80 3c 28 00 74 0d 48 8d bc 24 60 01 00 00 e8 d2 bf c6 00 48 8b RSP: 0018:ffffc900144cf5e0 EFLAGS: 00000293 RAX: 1ffff92002899ee8 RBX: 0000000000000000 RCX: ffff8880204d8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900144cf7b0 R08: ffffffff813513b4 R09: 1ffffffff25f50b0 R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: 1ffff92002899ecc R13: dffffc0000000000 R14: 0000000000000046 R15: ffffffff81b49df3 text_poke arch/x86/kernel/alternative.c:1968 [inline] text_poke_bp_batch+0x265/0xb30 arch/x86/kernel/alternative.c:2276 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205 static_key_enable+0x1a/0x20 kernel/jump_label.c:218 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10210 perf_try_init_event+0x139/0x3f0 kernel/events/core.c:11685 perf_init_event kernel/events/core.c:11755 [inline] perf_event_alloc+0x1018/0x20a0 kernel/events/core.c:12033 __do_sys_perf_event_open kernel/events/core.c:12540 [inline] __se_sys_perf_event_open+0xb43/0x38d0 kernel/events/core.c:12431 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: 0033:0x7fca40c7cf69 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:00007fca419980c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fca40db3f80 RCX: 00007fca40c7cf69 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000480 RBP: 00007fca40cda6fe R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fca40db3f80 R15: 00007ffd4ac73fb8 ---------------- Code disassembly (best guess): 0: 7c 24 jl 0x26 2: 50 push %rax 3: 00 75 19 add %dh,0x19(%rbp) 6: e8 b5 00 61 00 call 0x6100c0 b: eb 18 jmp 0x25 d: e8 ae 00 61 00 call 0x6100c0 12: e8 59 e3 50 0a call 0xa50e370 17: 48 83 7c 24 50 00 cmpq $0x0,0x50(%rsp) 1d: 74 e7 je 0x6 1f: e8 9c 00 61 00 call 0x6100c0 24: fb sti 25: 48 8b 44 24 78 mov 0x78(%rsp),%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 0d je 0x3e 31: 48 8d bc 24 60 01 00 lea 0x160(%rsp),%rdi 38: 00 39: e8 d2 bf c6 00 call 0xc6c010 3e: 48 rex.W 3f: 8b .byte 0x8b