================================ WARNING: inconsistent lock state 6.8.0-syzkaller-05236-g443574b03387 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.1/5208 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9438528 (lock#10){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9438528 (lock#10){?.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x8f/0x600 mm/mmap_lock.c:237 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x600 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:147 [inline] process_vm_rw_single_vec mm/process_vm_access.c:105 [inline] process_vm_rw_core mm/process_vm_access.c:216 [inline] process_vm_rw+0xa46/0xcf0 mm/process_vm_access.c:284 __do_sys_process_vm_readv mm/process_vm_access.c:296 [inline] __se_sys_process_vm_readv mm/process_vm_access.c:292 [inline] __x64_sys_process_vm_readv+0xe0/0x100 mm/process_vm_access.c:292 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 irq event stamp: 80 hardirqs last enabled at (79): [] seqcount_lockdep_reader_access+0x13b/0x1e0 include/linux/seqlock.h:74 hardirqs last disabled at (80): [] sysvec_call_function_single+0xe/0xc0 arch/x86/kernel/smp.c:266 softirqs last enabled at (0): [] rcu_lock_acquire include/linux/rcupdate.h:298 [inline] softirqs last enabled at (0): [] rcu_read_lock include/linux/rcupdate.h:750 [inline] softirqs last enabled at (0): [] copy_process+0xa03/0x3df0 kernel/fork.c:2258 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 *** 2 locks held by syz-executor.1/5208: #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline] #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x114/0x420 kernel/trace/bpf_trace.c:2420 #1: ffff88802ee0b120 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline] #1: ffff88802ee0b120 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x237/0x9d0 kernel/bpf/stackmap.c:141 stack backtrace: CPU: 0 PID: 5208 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #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+0x1e7/0x2e0 lib/dump_stack.c:106 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+0x1e4/0x530 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x600 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:166 [inline] stack_map_get_build_id_offset+0x9b2/0x9d0 kernel/bpf/stackmap.c:141 __bpf_get_stack+0x4ad/0x5a0 kernel/bpf/stackmap.c:449 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1985 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1975 bpf_prog_e6cf5f9c69743609+0x42/0x46 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x204/0x420 kernel/trace/bpf_trace.c:2420 trace_tlb_flush+0xfa/0x120 include/trace/events/tlb.h:38 flush_tlb_func+0x4e7/0x630 arch/x86/mm/tlb.c:895 csd_do_func kernel/smp.c:133 [inline] __flush_smp_call_function_queue+0x3ec/0x15b0 kernel/smp.c:511 __sysvec_call_function_single+0xa8/0x3e0 arch/x86/kernel/smp.c:271 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline] sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:is_idle_task include/linux/sched.h:1832 [inline] RIP: 0010:__might_resched+0x21f/0x780 kernel/sched/core.c:10152 Code: 84 24 a1 00 00 00 02 44 8b 64 24 1c 74 4d 4c 8d 66 2c 4c 89 e0 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 79 04 00 00 41 f6 04 24 02 <44> 8b 64 24 1c 75 2a 4c 8d a6 68 0a 00 00 4c 89 e0 48 c1 e8 03 0f RSP: 0018:ffffc90004c96ec0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff92000992dec RCX: ffff888021380000 RDX: dffffc0000000000 RSI: ffff888021380000 RDI: ffffc90004c96f60 RBP: ffffc90004c96fd0 R08: ffffffff8f86ae6f R09: 1ffffffff1f0d5cd R10: dffffc0000000000 R11: fffffbfff1f0d5ce R12: ffff88802138002c R13: ffff88802138043c R14: 0000000000000c26 R15: 1ffff92000992de0 vm_area_alloc_pages mm/vmalloc.c:3110 [inline] __vmalloc_area_node mm/vmalloc.c:3211 [inline] __vmalloc_node_range+0x7b1/0x14a0 mm/vmalloc.c:3392 __vmalloc_node mm/vmalloc.c:3457 [inline] vzalloc+0x79/0x90 mm/vmalloc.c:3530 bpf_check+0x260/0x18fe0 kernel/bpf/verifier.c:21178 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2895 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5631 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f367607dea9 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:00007f3676dcb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f36761abf80 RCX: 00007f367607dea9 RDX: 0000000000000090 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007f36760ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f36761abf80 R15: 00007fff94768168 ---------------- Code disassembly (best guess): 0: 84 24 a1 test %ah,(%rcx,%riz,4) 3: 00 00 add %al,(%rax) 5: 00 02 add %al,(%rdx) 7: 44 8b 64 24 1c mov 0x1c(%rsp),%r12d c: 74 4d je 0x5b e: 4c 8d 66 2c lea 0x2c(%rsi),%r12 12: 4c 89 e0 mov %r12,%rax 15: 48 c1 e8 03 shr $0x3,%rax 19: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax 1d: 84 c0 test %al,%al 1f: 0f 85 79 04 00 00 jne 0x49e 25: 41 f6 04 24 02 testb $0x2,(%r12) * 2a: 44 8b 64 24 1c mov 0x1c(%rsp),%r12d <-- trapping instruction 2f: 75 2a jne 0x5b 31: 4c 8d a6 68 0a 00 00 lea 0xa68(%rsi),%r12 38: 4c 89 e0 mov %r12,%rax 3b: 48 c1 e8 03 shr $0x3,%rax 3f: 0f .byte 0xf