================================ WARNING: inconsistent lock state 6.10.0-rc3-syzkaller #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.4/6242 [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_acquire_returned+0x8f/0x630 mm/mmap_lock.c:237 {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 copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline] _copy_to_user+0x81/0xb0 lib/usercopy.c:46 copy_to_user include/linux/uaccess.h:191 [inline] rng_dev_read+0x3be/0x6d0 drivers/char/hw_random/core.c:252 do_loop_readv_writev fs/read_write.c:761 [inline] vfs_readv+0x6c8/0xa90 fs/read_write.c:934 do_preadv fs/read_write.c:1049 [inline] __do_sys_preadv fs/read_write.c:1099 [inline] __se_sys_preadv fs/read_write.c:1094 [inline] __x64_sys_preadv+0x1c7/0x2d0 fs/read_write.c:1094 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: 28 hardirqs last enabled at (27): [] seqcount_lockdep_reader_access+0x14d/0x220 include/linux/seqlock.h:74 hardirqs last disabled at (28): [] sysvec_call_function_single+0xe/0xc0 arch/x86/kernel/smp.c:266 softirqs last enabled at (0): [] rcu_lock_acquire include/linux/rcupdate.h:329 [inline] softirqs last enabled at (0): [] rcu_read_lock include/linux/rcupdate.h:781 [inline] softirqs last enabled at (0): [] copy_process+0xa03/0x3dc0 kernel/fork.c:2259 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.4/6242: #0: ffffffff8e9bf710 (tomoyo_ss){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline] #0: ffffffff8e9bf710 (tomoyo_ss){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline] #0: ffffffff8e9bf710 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1108 [inline] #0: ffffffff8e9bf710 (tomoyo_ss){.+.+}-{0:0}, at: tomoyo_path_number_perm+0x208/0x880 security/tomoyo/file.c:722 #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: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline] #1: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2444 #2: ffff88807e1c1e18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline] #2: ffff88807e1c1e18 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x237/0x9d0 kernel/bpf/stackmap.c:141 stack backtrace: CPU: 1 PID: 6242 Comm: syz-executor.4 Not tainted 6.10.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 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_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] stack_map_get_build_id_offset+0x9af/0x9d0 kernel/bpf/stackmap.c:141 __bpf_get_stack+0x4ad/0x5a0 kernel/bpf/stackmap.c:449 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1994 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1984 bpf_prog_e6cf5f9c69743609+0x42/0x4a bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline] __bpf_prog_run include/linux/filter.h:682 [inline] bpf_prog_run include/linux/filter.h:698 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline] bpf_trace_run2+0x47f/0x540 kernel/trace/bpf_trace.c:2444 trace_tlb_flush+0x118/0x140 include/trace/events/tlb.h:38 flush_tlb_func+0x4e7/0x630 arch/x86/mm/tlb.c:892 csd_do_func kernel/smp.c:133 [inline] __flush_smp_call_function_queue+0x3fe/0x1690 kernel/smp.c:511 __sysvec_call_function_single+0xb8/0x430 arch/x86/kernel/smp.c:271 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline] sysvec_call_function_single+0x9e/0xc0 arch/x86/kernel/smp.c:266 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709 RIP: 0010:__phys_addr+0x23/0x170 arch/x86/mm/physaddr.c:17 Code: 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 53 49 89 fe e8 ef db 53 00 48 bf ff ff ff 7f ff ff ff ff 4c 89 f6 e8 bd e0 53 00 <4c> 89 f3 48 81 eb 00 00 00 80 0f 83 94 00 00 00 48 b8 00 00 00 00 RSP: 0018:ffffc90009affae8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff88802c02c000 RCX: ffff888020a25a00 RDX: 0000000000000000 RSI: ffff88802c02c000 RDI: ffffffff7fffffff RBP: ffff88802c02cff0 R08: ffffffff81424b23 R09: 00000000ffffffff R10: dffffc0000000000 R11: fffffbfff1f5a95e R12: 0000000000000fff R13: ffff88802c02c000 R14: ffff88802c02c000 R15: ffff88802c02c000 virt_to_folio include/linux/mm.h:1313 [inline] kfree+0x71/0x360 mm/slub.c:4550 tomoyo_realpath_from_path+0x5a9/0x5e0 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x23a/0x880 security/tomoyo/file.c:723 security_file_ioctl+0x77/0xb0 security/security.c:2765 __do_sys_ioctl fs/ioctl.c:901 [inline] __se_sys_ioctl+0x47/0x170 fs/ioctl.c:893 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 RIP: 0033:0x7fc0fba7cccb 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:00007fc0fc7920f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc0fba7cccb RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8 RBP: 00007fc0fbbb3f80 R08: 0000000000000000 R09: 00007ffe32a81587 R10: 0000000000000008 R11: 0000000000000246 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffe32a814a0 R15: 00007ffe32a81588 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: f3 0f 1e fa endbr64 b: 41 57 push %r15 d: 41 56 push %r14 f: 53 push %rbx 10: 49 89 fe mov %rdi,%r14 13: e8 ef db 53 00 call 0x53dc07 18: 48 bf ff ff ff 7f ff movabs $0xffffffff7fffffff,%rdi 1f: ff ff ff 22: 4c 89 f6 mov %r14,%rsi 25: e8 bd e0 53 00 call 0x53e0e7 * 2a: 4c 89 f3 mov %r14,%rbx <-- trapping instruction 2d: 48 81 eb 00 00 00 80 sub $0xffffffff80000000,%rbx 34: 0f 83 94 00 00 00 jae 0xce 3a: 48 rex.W 3b: b8 00 00 00 00 mov $0x0,%eax