================================ WARNING: inconsistent lock state 5.15.156-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.2/10376 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9b35bb8 (lock#10){?.+.}-{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_write_lock_killable include/linux/mmap_lock.h:88 [inline] vm_mmap_pgoff+0x2b0/0x2d0 mm/util.c:549 ksys_mmap_pgoff+0x13e/0x780 mm/mmap.c:1624 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 irq event stamp: 36 hardirqs last enabled at (35): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (35): [] _raw_spin_unlock_irqrestore+0x8b/0x130 kernel/locking/spinlock.c:194 hardirqs last disabled at (36): [] 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#10); lock(lock#10); *** DEADLOCK *** 3 locks held by syz-executor.2/10376: #0: ffffffff8cea9358 (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: ffff88807ef32428 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #2: ffff88807ef32428 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x23e/0x930 kernel/bpf/stackmap.c:185 stack backtrace: CPU: 1 PID: 10376 Comm: syz-executor.2 Not tainted 5.15.156-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/0x27c bpf_dispatcher_nop_func include/linux/bpf.h:785 [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+0x671/0x1fa0 arch/x86/kernel/unwind_orc.c:475 Code: 80 3c 10 00 74 12 48 89 df e8 cb 93 91 00 48 ba 00 00 00 00 00 fc ff df 48 8b 1b 4d 8d 6e 01 4c 89 f0 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 c6 14 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 0f RSP: 0018:ffffc900030e7608 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffffc900030e7a68 RCX: ffffffff8df97290 RDX: dffffc0000000000 RSI: ffffffff8e645252 RDI: ffffffff8df97274 RBP: ffffffff8e645274 R08: 000000000000000f R09: ffffc900030e77b0 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1cc8a4e R13: ffffffff8e645271 R14: ffffffff8e645270 R15: ffffc900030e76c0 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_realpath_from_path+0x5ad/0x5e0 security/tomoyo/realpath.c:291 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x225/0x810 security/tomoyo/file.c:723 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: 0033:0x7f287fe75c0b 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:00007f287e3e80f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f287fe75c0b RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8 RBP: 00007f287ffa3f80 R08: 0000000000000000 R09: 00007ffc6acae0d7 R10: 0000000000000008 R11: 0000000000000246 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffc6acadff0 R15: 00007ffc6acae0d8 ---------------- Code disassembly (best guess): 0: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 4: 74 12 je 0x18 6: 48 89 df mov %rbx,%rdi 9: e8 cb 93 91 00 call 0x9193d9 e: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 15: fc ff df 18: 48 8b 1b mov (%rbx),%rbx 1b: 4d 8d 6e 01 lea 0x1(%r14),%r13 1f: 4c 89 f0 mov %r14,%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 c6 14 00 00 jne 0x14f8 32: 4c 89 e8 mov %r13,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax 3d: 84 c0 test %al,%al 3f: 0f .byte 0xf