================================ WARNING: inconsistent lock state 5.15.158-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.4/3710 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9a35bb8 (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:1329 [inline] handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x59c/0x740 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568 irq event stamp: 44 hardirqs last enabled at (43): [] kasan_quarantine_put+0xd4/0x220 mm/kasan/quarantine.c:231 hardirqs last disabled at (44): [] 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-executor.4/3710: #0: ffffffff8cea9538 (tomoyo_ss){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311 #1: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311 #2: ffff88807c6b1628 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #2: ffff88807c6b1628 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x23e/0x930 kernel/bpf/stackmap.c:185 stack backtrace: CPU: 0 PID: 3710 Comm: syz-executor.4 Not tainted 5.15.158-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+0x1e3/0x2d0 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_e6cf5f9c69743609+0x3a/0xec4 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 __traceiter_tlb_flush+0x6c/0xc0 include/trace/events/tlb.h:38 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:vsnprintf+0x3a4/0x1c70 lib/vsprintf.c:2844 Code: f5 48 8b 44 24 10 42 0f b6 04 30 84 c0 0f 85 ef 12 00 00 4c 8b 34 24 41 8b 1e bf 29 00 00 00 89 de e8 f0 ab 52 fd 48 83 fb 28 <4c> 8b 7c 24 08 0f 87 91 08 00 00 e8 7c a8 52 fd 48 8b 7c 24 30 48 RSP: 0018:ffffc9000116fa00 EFLAGS: 00000287 RAX: 0000000000000000 RBX: 0000000000000018 RCX: 000000000000008b RDX: ffff888023c10000 RSI: 0000000000000018 RDI: 0000000000000029 RBP: ffffc9000116faf0 R08: ffffffff842db430 R09: ffffffff842db221 R10: 0000000000000012 R11: ffff888023c10000 R12: ffffc9000116fc82 R13: dffffc0000000000 R14: ffffc9000116fb60 R15: ffffffff8ad2b002 snprintf+0xd6/0x120 lib/vsprintf.c:2944 tomoyo_audit_path_number_log security/tomoyo/file.c:233 [inline] tomoyo_path_number_perm+0x4e0/0x810 security/tomoyo/file.c:734 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: 0033:0x7f6768a76c0b 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:00007f6766fe90f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6768a76c0b RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8 RBP: 00007f6768ba4f80 R08: 0000000000000000 R09: 00007ffd127986d7 R10: 0000000000000008 R11: 0000000000000246 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffd127985f0 R15: 00007ffd127986d8 ---------------- Code disassembly (best guess): 0: f5 cmc 1: 48 8b 44 24 10 mov 0x10(%rsp),%rax 6: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax b: 84 c0 test %al,%al d: 0f 85 ef 12 00 00 jne 0x1302 13: 4c 8b 34 24 mov (%rsp),%r14 17: 41 8b 1e mov (%r14),%ebx 1a: bf 29 00 00 00 mov $0x29,%edi 1f: 89 de mov %ebx,%esi 21: e8 f0 ab 52 fd call 0xfd52ac16 26: 48 83 fb 28 cmp $0x28,%rbx * 2a: 4c 8b 7c 24 08 mov 0x8(%rsp),%r15 <-- trapping instruction 2f: 0f 87 91 08 00 00 ja 0x8c6 35: e8 7c a8 52 fd call 0xfd52a8b6 3a: 48 8b 7c 24 30 mov 0x30(%rsp),%rdi 3f: 48 rex.W