================================ WARNING: inconsistent lock state 5.15.157-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.0/17325 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9a35bb8 (lock#11){?.+.}-{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_lock include/linux/mmap_lock.h:118 [inline] exit_mm+0x787/0x7f0 kernel/exit.c:497 do_exit+0x626/0x2480 kernel/exit.c:859 do_group_exit+0x144/0x310 kernel/exit.c:994 __do_sys_exit_group kernel/exit.c:1005 [inline] __se_sys_exit_group kernel/exit.c:1003 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1003 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: 34 hardirqs last enabled at (33): [] seqcount_lockdep_reader_access+0x149/0x220 include/linux/seqlock.h:104 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#11); lock(lock#11); *** DEADLOCK *** 3 locks held by syz-executor.0/17325: #0: ffffffff8cea94f8 (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: ffff88807d5c0828 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #2: ffff88807d5c0828 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x23e/0x930 kernel/bpf/stackmap.c:185 stack backtrace: CPU: 0 PID: 17325 Comm: syz-executor.0 Not tainted 5.15.157-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/0x404 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:on_stack arch/x86/include/asm/stacktrace.h:58 [inline] RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:347 [inline] RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:357 [inline] RIP: 0010:unwind_next_frame+0xac4/0x1fa0 arch/x86/kernel/unwind_orc.c:539 Code: c1 e8 03 80 3c 10 00 74 0f e8 c8 a2 91 00 48 ba 00 00 00 00 00 fc ff df 48 89 5c 24 58 49 8b 6f 10 48 8b 44 24 38 0f b6 04 10 <84> c0 0f 85 80 0f 00 00 48 8b 04 24 48 8d 58 f8 41 83 3f 00 74 18 RSP: 0018:ffffc90002f37648 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8e825dd7 RCX: ffffffff8e0d7ae8 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffc90002f37710 RBP: ffffc90002f38000 R08: 0000000000000001 R09: ffffc90002f377f0 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1d04bba R13: 1ffffffff1d04bba R14: ffffc90002f30000 R15: ffffc90002f37700 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 mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x168/0x300 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0x26b/0x530 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x5a2/0x5e0 security/tomoyo/realpath.c:288 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: 0033:0x7f413e859c0b 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:00007f413cdcc0f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f413e859c0b RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8 RBP: 00007f413e987f80 R08: 0000000000000000 R09: 00007ffd8cb6fd97 R10: 0000000000000008 R11: 0000000000000246 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffd8cb6fcb0 R15: 00007ffd8cb6fd98 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 7: 74 0f je 0x18 9: e8 c8 a2 91 00 call 0x91a2d6 e: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 15: fc ff df 18: 48 89 5c 24 58 mov %rbx,0x58(%rsp) 1d: 49 8b 6f 10 mov 0x10(%r15),%rbp 21: 48 8b 44 24 38 mov 0x38(%rsp),%rax 26: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 85 80 0f 00 00 jne 0xfb2 32: 48 8b 04 24 mov (%rsp),%rax 36: 48 8d 58 f8 lea -0x8(%rax),%rbx 3a: 41 83 3f 00 cmpl $0x0,(%r15) 3e: 74 18 je 0x58