================================ WARNING: inconsistent lock state 6.8.0-syzkaller-05271-gf99c5f563c17 #0 Not tainted -------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. syz-executor.2/5299 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff8880b9438528 (lock#10){?.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9438528 (lock#10){?.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x8f/0x600 mm/mmap_lock.c:237 {HARDIRQ-ON-W} state was registered at: lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x600 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:166 [inline] get_mmap_lock_carefully mm/memory.c:5497 [inline] lock_mm_and_find_vma+0x213/0x2f0 mm/memory.c:5557 do_user_addr_fault arch/x86/mm/fault.c:1385 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x1a9/0x890 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 strncpy_from_user+0x110/0x2f0 lib/strncpy_from_user.c:139 bpf_prog_load+0xd65/0x20f0 kernel/bpf/syscall.c:2836 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5631 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 irq event stamp: 36 hardirqs last enabled at (35): [] seqcount_lockdep_reader_access+0x13b/0x1e0 include/linux/seqlock.h:74 hardirqs last disabled at (36): [] 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+0xa03/0x3df0 kernel/fork.c:2258 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.2/5299: #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #0: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: current_objcg_update+0x1ab/0x350 mm/memcontrol.c:3173 #1: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] #1: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline] #1: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline] #1: ffffffff8e131920 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x114/0x420 kernel/trace/bpf_trace.c:2420 #2: ffff88807f263120 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline] #2: ffff88807f263120 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x237/0x9d0 kernel/bpf/stackmap.c:141 stack backtrace: CPU: 0 PID: 5299 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #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+0x1e7/0x2e0 lib/dump_stack.c:106 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+0x1e4/0x530 kernel/locking/lockdep.c:5754 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0xa8/0x600 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:166 [inline] stack_map_get_build_id_offset+0x9b2/0x9d0 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:1985 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1975 bpf_prog_e6cf5f9c69743609+0x42/0x46 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run2+0x204/0x420 kernel/trace/bpf_trace.c:2420 trace_tlb_flush+0xfa/0x120 include/trace/events/tlb.h:38 flush_tlb_func+0x4e7/0x630 arch/x86/mm/tlb.c:895 csd_do_func kernel/smp.c:133 [inline] __flush_smp_call_function_queue+0x3ec/0x15b0 kernel/smp.c:511 __sysvec_call_function_single+0xa8/0x3e0 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:percpu_ref_tryget+0x2/0x180 include/linux/percpu-refcount.h:265 Code: 00 00 00 e8 80 5a f7 ff f0 4c 01 33 e9 6f ff ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 53 48 89 fb e8 83 59 7b ff 4c 8d 35 00 00 00 00 48 c7 c7 20 RSP: 0018:ffffc9000521f3b0 EFLAGS: 00000286 RAX: 0000000000000001 RBX: ffff88802bf61d00 RCX: 0000000080000000 RDX: dffffc0000000000 RSI: ffffffff8baad3a0 RDI: ffff88802bf61d00 RBP: ffffc9000521f4b0 R08: ffffffff92cc7507 R09: 1ffffffff2598ea0 R10: dffffc0000000000 R11: fffffbfff2598ea1 R12: ffffffff82000f8b R13: ffff888021105238 R14: ffff88807c680000 R15: dffffc0000000000 obj_cgroup_tryget include/linux/memcontrol.h:806 [inline] __get_obj_cgroup_from_memcg+0x5e/0xe0 mm/memcontrol.c:3129 current_objcg_update+0x221/0x350 mm/memcontrol.c:3175 current_obj_cgroup mm/memcontrol.c:3200 [inline] __memcg_kmem_charge_page+0x1fe/0x250 mm/memcontrol.c:3325 __alloc_pages+0x28c/0x680 mm/page_alloc.c:4586 __alloc_pages_bulk+0x729/0xd40 mm/page_alloc.c:4517 alloc_pages_bulk_array_mempolicy+0x687/0x840 mm/mempolicy.c:2296 vm_area_alloc_pages mm/vmalloc.c:3100 [inline] __vmalloc_area_node mm/vmalloc.c:3211 [inline] __vmalloc_node_range+0x798/0x14a0 mm/vmalloc.c:3392 __vmalloc_node mm/vmalloc.c:3457 [inline] __vmalloc+0x79/0x90 mm/vmalloc.c:3471 bpf_prog_alloc_no_stats+0x4d/0x4a0 kernel/bpf/core.c:103 bpf_prog_alloc+0x3b/0x1b0 kernel/bpf/core.c:144 bpf_prog_load+0x7f7/0x20f0 kernel/bpf/syscall.c:2805 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5631 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f426367dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f42644930c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f42637abf80 RCX: 00007f426367dea9 RDX: 0000000000000090 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007f42636ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f42637abf80 R15: 00007ffc76631f58 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 e8 add %ch,%al 4: 80 5a f7 ff sbbb $0xff,-0x9(%rdx) 8: f0 4c 01 33 lock add %r14,(%rbx) c: e9 6f ff ff ff jmp 0xffffff80 11: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 41 57 push %r15 * 2a: 41 56 push %r14 <-- trapping instruction 2c: 53 push %rbx 2d: 48 89 fb mov %rdi,%rbx 30: e8 83 59 7b ff call 0xff7b59b8 35: 4c 8d 35 00 00 00 00 lea 0x0(%rip),%r14 # 0x3c 3c: 48 rex.W 3d: c7 .byte 0xc7 3e: c7 (bad) 3f: 20 .byte 0x20