================================ WARNING: inconsistent lock state 6.10.0-rc2-syzkaller-00242-g36534d3c5453 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.4/5120 [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_acquire_returned+0xa8/0x630 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:164 [inline] get_mmap_lock_carefully mm/memory.c:5715 [inline] lock_mm_and_find_vma+0x213/0x2f0 mm/memory.c:5775 do_user_addr_fault arch/x86/mm/fault.c:1361 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x1bf/0x8c0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 strncpy_from_user+0x110/0x2f0 lib/strncpy_from_user.c:139 bpf_prog_load+0xd65/0x20f0 kernel/bpf/syscall.c:2849 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5688 __do_sys_bpf kernel/bpf/syscall.c:5795 [inline] __se_sys_bpf kernel/bpf/syscall.c:5793 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5793 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: 2718024 hardirqs last enabled at (2718023): [] flush_tlb_mm_range+0x3df/0x5c0 arch/x86/mm/tlb.c:1032 hardirqs last disabled at (2718024): [] sysvec_irq_work+0xe/0xc0 arch/x86/kernel/irq_work.c:17 softirqs last enabled at (2717920): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last enabled at (2717920): [] fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline] softirqs last enabled at (2717920): [] fpu_clone+0x25b/0xad0 arch/x86/kernel/fpu/core.c:630 softirqs last disabled at (2717918): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (2717918): [] fpregs_lock arch/x86/include/asm/fpu/api.h:72 [inline] softirqs last disabled at (2717918): [] fpu_clone+0x25b/0xad0 arch/x86/kernel/fpu/core.c:630 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock#10); *** DEADLOCK *** 3 locks held by syz-executor.4/5120: #0: ffff888028c939b8 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:678 [inline] #0: ffff888028c939b8 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5844 #1: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #1: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #1: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: __pte_offset_map+0x82/0x380 mm/pgtable-generic.c:287 #2: ffff888028c3ba38 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #2: ffff888028c3ba38 (ptlock_ptr(ptdesc)#2){+.+.}-{2:2}, at: __pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:375 stack backtrace: CPU: 1 PID: 5120 Comm: syz-executor.4 Not tainted 6.10.0-rc2-syzkaller-00242-g36534d3c5453 #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+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:flush_tlb_mm_range+0x3e7/0x5c0 arch/x86/mm/tlb.c:1036 Code: 1f 76 b9 00 8b 44 24 60 fa a9 00 02 00 00 74 05 e8 3e 22 5b 00 4c 89 f7 e8 d6 f4 ff ff e8 71 20 5b 00 fb 65 ff 0d 11 13 c0 7e 01 00 00 00 e8 cf 27 23 00 65 8b 05 00 62 c1 7e 85 c0 0f 84 a2 RSP: 0000:ffffc9000355f600 EFLAGS: 00000246 RAX: 200d1e9a45332d00 RBX: 1ffff920006abecc RCX: ffffffff8172d78a RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: ffffffff8c1ff380 RBP: ffffc9000355f6d0 R08: ffffffff92fab587 R09: 1ffffffff25f56b0 R10: dffffc0000000000 R11: fffffbfff25f56b1 R12: 0000000000000001 R13: ffff88801e27b840 R14: ffff8880b953d6c0 R15: ffffc9000355f660 flush_tlb_page arch/x86/include/asm/tlbflush.h:254 [inline] ptep_clear_flush+0x11a/0x170 mm/pgtable-generic.c:101 wp_page_copy mm/memory.c:3357 [inline] do_wp_page+0x1c19/0x5310 mm/memory.c:3683 handle_pte_fault+0x119a/0x7130 mm/memory.c:5396 __handle_mm_fault mm/memory.c:5523 [inline] handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5688 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f802ec594d8 Code: 55 48 8d 2d aa e1 12 00 53 48 89 eb 66 0f 1f 44 00 00 44 89 e0 87 03 83 f8 01 7f 26 48 8b 9b 70 08 00 00 48 39 eb 75 ea 31 c0 <87> 05 1e 13 c9 00 83 f8 01 7f 25 5b 5d 41 5c c3 0f 1f 84 00 00 00 RSP: 002b:00007ffd3374fc40 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00007f802ed87660 RCX: 00007f802ec7a0d3 RDX: 0000000000000035 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007f802ed87660 R08: 0000000000000000 R09: 0000000000000000 R10: 0000555557d4b750 R11: 0000000000000246 R12: 0000000000000000 R13: ffffffffffffffb0 R14: 0000000000000006 R15: 0000000000000001 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 76 b9 jbe 0xffffffbb 2: 00 8b 44 24 60 fa add %cl,-0x59fdbbc(%rbx) 8: a9 00 02 00 00 test $0x200,%eax d: 74 05 je 0x14 f: e8 3e 22 5b 00 call 0x5b2252 14: 4c 89 f7 mov %r14,%rdi 17: e8 d6 f4 ff ff call 0xfffff4f2 1c: e8 71 20 5b 00 call 0x5b2092 21: fb sti 22: 65 ff 0d 11 13 c0 7e decl %gs:0x7ec01311(%rip) # 0x7ec0133a * 29: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction 2e: e8 cf 27 23 00 call 0x232802 33: 65 8b 05 00 62 c1 7e mov %gs:0x7ec16200(%rip),%eax # 0x7ec1623a 3a: 85 c0 test %eax,%eax 3c: 0f .byte 0xf 3d: 84 .byte 0x84 3e: a2 .byte 0xa2