================================ WARNING: inconsistent lock state 5.15.163-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz.4.393/4546 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9b35bb8 (lock#9){?.+.}-{2:2}, at: local_lock_acquire+0xd/0x170 include/linux/local_lock_internal.h:28 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 local_lock_acquire+0x29/0x170 include/linux/local_lock_internal.h:29 __mmap_lock_do_trace_acquire_returned+0x7c/0x340 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] do_user_addr_fault arch/x86/mm/fault.c:1298 [inline] handle_page_fault arch/x86/mm/fault.c:1445 [inline] exc_page_fault+0x564/0x700 arch/x86/mm/fault.c:1501 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568 irq event stamp: 34 hardirqs last enabled at (33): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (33): [] _raw_spin_unlock_irqrestore+0x8b/0x130 kernel/locking/spinlock.c:194 hardirqs last disabled at (34): [] sysvec_call_function_single+0xa/0xb0 arch/x86/kernel/smp.c:243 softirqs last enabled at (0): [] copy_process+0x13b9/0x3ef0 kernel/fork.c:2151 softirqs last disabled at (0): [<0000000000000000>] 0x0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#9); lock(lock#9); *** DEADLOCK *** 3 locks held by syz.4.393/4546: #0: ffffffff8cea9818 (tomoyo_ss){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311 #1: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311 #2: ffff8880237d5528 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #2: ffff8880237d5528 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x23e/0x930 kernel/bpf/stackmap.c:185 stack backtrace: CPU: 1 PID: 4546 Comm: syz.4.393 Not tainted 5.15.163-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 valid_state+0x134/0x1c0 kernel/locking/lockdep.c:3932 mark_lock_irq+0xa8/0xba0 kernel/locking/lockdep.c:4135 mark_lock+0x21a/0x340 kernel/locking/lockdep.c:4591 mark_usage kernel/locking/lockdep.c:4483 [inline] __lock_acquire+0xb5c/0x1ff0 kernel/locking/lockdep.c:4966 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 local_lock_acquire+0x29/0x170 include/linux/local_lock_internal.h:29 __mmap_lock_do_trace_acquire_returned+0x7c/0x340 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+0x612/0x930 kernel/bpf/stackmap.c:185 __bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:496 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1490 [inline] bpf_get_stack_raw_tp+0x1b2/0x220 kernel/trace/bpf_trace.c:1480 bpf_prog_ec3b2eefa702d8d3+0x3a/0x30c bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1917 trace_tlb_flush+0xed/0x110 include/trace/events/tlb.h:38 flush_tlb_func+0x480/0x590 arch/x86/mm/tlb.c:851 flush_smp_call_function_queue+0x2b5/0x760 kernel/smp.c:628 __sysvec_call_function_single+0x9a/0x250 arch/x86/kernel/smp.c:248 sysvec_call_function_single+0x89/0xb0 arch/x86/kernel/smp.c:243 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:646 RIP: 0010:unwind_next_frame+0x42e/0x1fa0 arch/x86/kernel/unwind_orc.c:461 Code: 95 88 8a 49 8d 6e 04 49 8d 5e 05 49 89 ec 49 c1 ec 03 41 0f b6 04 14 84 c0 0f 85 33 14 00 00 48 89 d8 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 49 14 00 00 0f b7 45 00 89 c3 83 e3 0f 0f 84 9b 00 00 RSP: 0018:ffffc90002fd7688 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffffffff8ee723a3 RCX: ffffffff8e50acbc RDX: dffffc0000000000 RSI: ffffffff8ee72386 RDI: ffffffff8e50aca8 RBP: ffffffff8ee723a2 R08: 000000000000000b R09: ffffc90002fd7830 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1dce474 R13: ffffffff8a1e6b4a R14: ffffffff8ee7239e R15: ffffc90002fd7740 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0xf1/0x270 mm/slub.c:4559 tomoyo_path_number_perm+0x648/0x810 security/tomoyo/file.c:736 security_file_ioctl+0x6d/0xa0 security/security.c:1555 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x47/0x160 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fafe616775b Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 RSP: 002b:00007fafe4be8070 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fafe616775b RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8 RBP: 00007fafe62f7f60 R08: 0000000000000000 R09: 00007ffdf23a78f7 R10: 0000000000000008 R11: 0000000000000246 R12: ffffffffffffffa8 R13: 000000000000000b R14: 00007ffdf23a7810 R15: 00007ffdf23a78f8 ---------------- Code disassembly (best guess): 0: 95 xchg %eax,%ebp 1: 88 8a 49 8d 6e 04 mov %cl,0x46e8d49(%rdx) 7: 49 8d 5e 05 lea 0x5(%r14),%rbx b: 49 89 ec mov %rbp,%r12 e: 49 c1 ec 03 shr $0x3,%r12 12: 41 0f b6 04 14 movzbl (%r12,%rdx,1),%eax 17: 84 c0 test %al,%al 19: 0f 85 33 14 00 00 jne 0x1452 1f: 48 89 d8 mov %rbx,%rax 22: 48 c1 e8 03 shr $0x3,%rax 26: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 85 49 14 00 00 jne 0x147b 32: 0f b7 45 00 movzwl 0x0(%rbp),%eax 36: 89 c3 mov %eax,%ebx 38: 83 e3 0f and $0xf,%ebx 3b: 0f .byte 0xf 3c: 84 .byte 0x84 3d: 9b fwait