======================================================
WARNING: possible circular locking dependency detected
6.1.128-syzkaller #0 Not tainted
------------------------------------------------------
syz.7.7969/26515 is trying to acquire lock:
ffff8880b8f28118 (krc.lock){-.-.}-{2:2}, at: krc_this_cpu_lock kernel/rcu/tree.c:2991 [inline]
ffff8880b8f28118 (krc.lock){-.-.}-{2:2}, at: add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3311 [inline]
ffff8880b8f28118 (krc.lock){-.-.}-{2:2}, at: kvfree_call_rcu+0x1b2/0x8c0 kernel/rcu/tree.c:3402

but task is already holding lock:
ffff8880b8f2a4d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1693 [inline]
ffff8880b8f2a4d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x6d3/0xe50 kernel/time/hrtimer.c:1753

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (hrtimer_bases.lock){-.-.}-{2:2}:
       lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       lock_hrtimer_base kernel/time/hrtimer.c:174 [inline]
       hrtimer_start_range_ns+0x105/0xc80 kernel/time/hrtimer.c:1300
       hrtimer_start include/linux/hrtimer.h:420 [inline]
       run_page_cache_worker kernel/rcu/tree.c:3293 [inline]
       kvfree_call_rcu+0x72b/0x8c0 kernel/rcu/tree.c:3404
       rtnl_register_internal+0x489/0x580 net/core/rtnetlink.c:260
       rtnl_register+0x32/0x70 net/core/rtnetlink.c:310
       ip_rt_init+0x335/0x3c7 net/ipv4/route.c:3763
       ip_init+0xa/0x14 net/ipv4/ip_output.c:1770
       inet_init+0x2ae/0x3c0 net/ipv4/af_inet.c:2033
       do_one_initcall+0x265/0x8f0 init/main.c:1298
       do_initcall_level+0x157/0x207 init/main.c:1371
       do_initcalls+0x49/0x86 init/main.c:1387
       kernel_init_freeable+0x45c/0x60f init/main.c:1626
       kernel_init+0x19/0x290 init/main.c:1514
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

-> #0 (krc.lock){-.-.}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3090 [inline]
       check_prevs_add kernel/locking/lockdep.c:3209 [inline]
       validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
       __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
       lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
       __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
       _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
       krc_this_cpu_lock kernel/rcu/tree.c:2991 [inline]
       add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3311 [inline]
       kvfree_call_rcu+0x1b2/0x8c0 kernel/rcu/tree.c:3402
       trie_delete_elem+0x53a/0x690 kernel/bpf/lpm_trie.c:545
       bpf_prog_1db1603a7cfa36fb+0x3d/0x41
       bpf_dispatcher_nop_func include/linux/bpf.h:1000 [inline]
       __bpf_prog_run include/linux/filter.h:603 [inline]
       bpf_prog_run include/linux/filter.h:610 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline]
       bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2323
       trace_hrtimer_start include/trace/events/timer.h:202 [inline]
       debug_activate kernel/time/hrtimer.c:477 [inline]
       enqueue_hrtimer+0x382/0x410 kernel/time/hrtimer.c:1085
       __run_hrtimer kernel/time/hrtimer.c:1706 [inline]
       __hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1753
       hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
       local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
       __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
       instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
       sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
       asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
       check_kcov_mode kernel/kcov.c:182 [inline]
       write_comp_data kernel/kcov.c:245 [inline]
       __sanitizer_cov_trace_const_cmp4+0x21/0x80 kernel/kcov.c:313
       __ieee80211_beacon_get+0x23c/0x2110 net/mac80211/tx.c:5230
       ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342
       ieee80211_beacon_get include/net/mac80211.h:5249 [inline]
       mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086
       __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788
       ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824
       mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142
       __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
       __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753
       hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770
       handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
       __do_softirq kernel/softirq.c:612 [inline]
       invoke_softirq kernel/softirq.c:452 [inline]
       __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
       irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
       instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
       sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
       asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
       __kasan_record_aux_stack+0xb8/0xc0 mm/kasan/generic.c:487
       call_rcu+0x163/0xa10 kernel/rcu/tree.c:2845
       __destroy_inode+0x2d5/0x640 fs/inode.c:286
       destroy_inode fs/inode.c:309 [inline]
       evict+0x7d6/0x930 fs/inode.c:720
       __sys_socketpair+0x6bd/0x700
       __do_sys_socketpair net/socket.c:1786 [inline]
       __se_sys_socketpair net/socket.c:1783 [inline]
       __x64_sys_socketpair+0x97/0xb0 net/socket.c:1783
       do_syscall_x64 arch/x86/entry/common.c:51 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(hrtimer_bases.lock);
                               lock(krc.lock);
                               lock(hrtimer_bases.lock);
  lock(krc.lock);

 *** DEADLOCK ***

4 locks held by syz.7.7969/26515:
 #0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: ieee80211_iterate_active_interfaces_atomic+0x26/0x170 net/mac80211/util.c:823
 #1: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #1: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #1: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: __ieee80211_beacon_get+0xb0/0x2110 net/mac80211/tx.c:5223
 #2: ffff8880b8f2a4d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1693 [inline]
 #2: ffff8880b8f2a4d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x6d3/0xe50 kernel/time/hrtimer.c:1753
 #3: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #3: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #3: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline]
 #3: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x110/0x410 kernel/trace/bpf_trace.c:2323

stack backtrace:
CPU: 1 PID: 26515 Comm: syz.7.7969 Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170
 check_prev_add kernel/locking/lockdep.c:3090 [inline]
 check_prevs_add kernel/locking/lockdep.c:3209 [inline]
 validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 krc_this_cpu_lock kernel/rcu/tree.c:2991 [inline]
 add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3311 [inline]
 kvfree_call_rcu+0x1b2/0x8c0 kernel/rcu/tree.c:3402
 trie_delete_elem+0x53a/0x690 kernel/bpf/lpm_trie.c:545
 bpf_prog_1db1603a7cfa36fb+0x3d/0x41
 bpf_dispatcher_nop_func include/linux/bpf.h:1000 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline]
 bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2323
 trace_hrtimer_start include/trace/events/timer.h:202 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x382/0x410 kernel/time/hrtimer.c:1085
 __run_hrtimer kernel/time/hrtimer.c:1706 [inline]
 __hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x21/0x80 kernel/kcov.c:313
Code: 4c 89 44 0a 20 c3 0f 1f 00 4c 8b 04 24 65 48 8b 15 34 cf 77 7e 65 8b 05 35 cf 77 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b <83> ba 1c 16 00 00 00 74 52 8b 82 f8 15 00 00 83 f8 03 75 47 48 8b
RSP: 0018:ffffc900001e0818 EFLAGS: 00000246
RAX: 0000000000000100 RBX: 0000000000000001 RCX: ffff88802e179dc0
RDX: ffff88802e179dc0 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900001e0a30 R08: ffffffff8a3a0f6c R09: fffffbfff224a04d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff9200003c11c R14: ffff888060fbe698 R15: ffffffff8a3a0de0
 __ieee80211_beacon_get+0x23c/0x2110 net/mac80211/tx.c:5230
 ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342
 ieee80211_beacon_get include/net/mac80211.h:5249 [inline]
 mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086
 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788
 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824
 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__kasan_record_aux_stack+0xb8/0xc0 mm/kasan/generic.c:487
Code: bc 00 00 00 48 85 c0 74 1c 48 01 c3 74 17 8b 43 08 89 43 0c 41 0f b6 f6 bf 00 08 00 00 e8 20 d9 ff ff 89 43 08 5b 41 5e 41 5f <5d> c3 66 0f 1f 44 00 00 31 f6 e9 39 ff ff ff 66 0f 1f 84 00 00 00
RSP: 0018:ffffc90003317b30 EFLAGS: 00000282
RAX: 0000000006680366 RBX: 0000000000000001 RCX: c4081cb1102e2f00
RDX: ffffc9000331791c RSI: 0000000000000003 RDI: 0000000000000800
RBP: 0000000000000030 R08: 0000000000000009 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff83fc1ce0
R13: 1ffff92000662f74 R14: ffff8880583f4cc0 R15: ffffc90003317be0
 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2845
 __destroy_inode+0x2d5/0x640 fs/inode.c:286
 destroy_inode fs/inode.c:309 [inline]
 evict+0x7d6/0x930 fs/inode.c:720
 __sys_socketpair+0x6bd/0x700
 __do_sys_socketpair net/socket.c:1786 [inline]
 __se_sys_socketpair net/socket.c:1783 [inline]
 __x64_sys_socketpair+0x97/0xb0 net/socket.c:1783
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc46798cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc4677ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007fc467ba5fa0 RCX: 00007fc46798cde9
RDX: 0000000000000011 RSI: 0000000000000002 RDI: 000000000000000a
RBP: 00007fc467a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000400000000100 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc467ba5fa0 R15: 00007ffcf9da77c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	4c 89 44 0a 20       	mov    %r8,0x20(%rdx,%rcx,1)
   5:	c3                   	ret
   6:	0f 1f 00             	nopl   (%rax)
   9:	4c 8b 04 24          	mov    (%rsp),%r8
   d:	65 48 8b 15 34 cf 77 	mov    %gs:0x7e77cf34(%rip),%rdx        # 0x7e77cf49
  14:	7e
  15:	65 8b 05 35 cf 77 7e 	mov    %gs:0x7e77cf35(%rip),%eax        # 0x7e77cf51
  1c:	25 00 01 ff 00       	and    $0xff0100,%eax
  21:	74 10                	je     0x33
  23:	3d 00 01 00 00       	cmp    $0x100,%eax
  28:	75 5b                	jne    0x85
* 2a:	83 ba 1c 16 00 00 00 	cmpl   $0x0,0x161c(%rdx) <-- trapping instruction
  31:	74 52                	je     0x85
  33:	8b 82 f8 15 00 00    	mov    0x15f8(%rdx),%eax
  39:	83 f8 03             	cmp    $0x3,%eax
  3c:	75 47                	jne    0x85
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b