syzbot

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WARNING: CPU: 0 PID: 4388 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 0 PID: 4388 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 0 PID: 4388 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Code: 24 4c 89 e7 e8 8e f7 09 f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 89 57 d1 f7 0f 0b e9 f6 f7 ff ff e8 7d 57 d1 f7 <0f> 0b e9 48 fb ff ff e8 71 57 d1 f7 48 c7 c7 90 ef fa 8d 4c 89 e6
RSP: 0018:ffffc90000007a30 EFLAGS: 00010246
RAX: ffffffff89b11dd3 RBX: ffffffff89b10bd6 RCX: ffff88802751d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802751d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805ac8e228
R13: dffffc0000000000 R14: ffff88805ac8e760 R15: ffff888078950824
FS:  000055556a03f500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35851e92f8 CR3: 000000001d692000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5472
 ieee80211_beacon_get include/net/mac80211.h:5335 [inline]
 mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:788
 ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 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:lock_release+0x5ab/0x920 kernel/locking/lockdep.c:5686
Code: 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 2f 04 f8 75 70 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900033778a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 01310f0dcca97c3b RCX: de5f24c4f763ff00
RDX: 0000000000000001 RSI: ffffffff8a8c2220 RDI: ffffffff8adf11a0
RBP: ffffc900033779a8 R08: ffffffff8e1ff26f R09: 1ffffffff1c3fe4d
R10: dffffc0000000000 R11: fffffbfff1c3fe4e R12: ffff88802751e448
R13: dffffc0000000000 R14: ffff88802751e410 R15: 1ffff9200066ef20
 xt_obj_to_user+0x31/0x120 net/netfilter/x_tables.c:297
 xt_target_to_user+0x97/0x1e0 net/netfilter/x_tables.c:343
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:877 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
 do_ip6t_get_ctl+0xd58/0x11b0 net/ipv6/netfilter/ip6_tables.c:1679
 nf_getsockopt+0x25e/0x280 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x222/0x2e0 net/ipv6/ipv6_sockglue.c:1512
 __sys_getsockopt+0x1b0/0x230 net/socket.c:2331
 __do_sys_getsockopt net/socket.c:2346 [inline]
 __se_sys_getsockopt net/socket.c:2343 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2343
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3584f9dfea
Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 d8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7
RSP: 002b:00007ffcb93c9dc8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffcb93c9e50 RCX: 00007f3584f9dfea
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffcb93c9dec R09: 0000000000000000
R10: 00007ffcb93c9e50 R11: 0000000000000212 R12: 00007f35851e9900
R13: 00007ffcb93c9dec R14: 0000000000000000 R15: 00007f35851e9fc0
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 f7                	add    %dh,%bh
   4:	84 24 80             	test   %ah,(%rax,%rax,4)
   7:	00 00                	add    %al,(%rax)
   9:	00 00                	add    %al,(%rax)
   b:	02 00                	add    (%rax),%al
   d:	00 43 c6             	add    %al,-0x3a(%rbx)
  10:	44 2f                	rex.R (bad)
  12:	04 f8                	add    $0xf8,%al
  14:	75 70                	jne    0x86
  16:	f7 44 24 50 00 02 00 	testl  $0x200,0x50(%rsp)
  1d:	00
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	48 c7 44 24 60 0e 36 	movq   $0x45e0360e,0x60(%rsp)
  28:	e0 45
* 2a:	4b c7 04 2f 00 00 00 	movq   $0x0,(%r15,%r13,1) <-- trapping instruction
  31:	00
  32:	43 c7 44 2f 08 00 00 	movl   $0x0,0x8(%r15,%r13,1)
  39:	00 00
  3b:	65                   	gs
  3c:	48                   	rex.W
  3d:	8b                   	.byte 0x8b
  3e:	04 25                	add    $0x25,%al