syzbot

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WARNING: CPU: 0 PID: 4577 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 0 PID: 4577 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Modules linked in:
CPU: 0 PID: 4577 Comm: syz.0.33 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Code: ff ff ff e8 00 41 e4 f7 0f 0b 48 8b 7c 24 20 e8 44 ae 7f fe e9 dd e9 ff ff e8 ea 40 e4 f7 0f 0b e9 f1 ee ff ff e8 de 40 e4 f7 <0f> 0b e9 61 f2 ff ff e8 d2 40 e4 f7 48 c7 c7 f0 7a fa 8d 4c 89 f6
RSP: 0018:ffffc900000078a0 EFLAGS: 00010246
RAX: ffffffff899c8f42 RBX: 0000000000000000 RCX: ffff8880574dd940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007aa8 R08: ffff8880574dd940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff92000000f2c
R13: dffffc0000000000 R14: ffff888077b9a258 R15: ffff88807dae3600
FS:  000055558f0ca500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31b1dddd58 CR3: 0000000020729000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x5b/0x4d0 net/mac80211/tx.c:5352
 ieee80211_beacon_get include/net/mac80211.h:5264 [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:1752 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1816
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 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:stack_trace_consume_entry+0x4d/0x270 kernel/stacktrace.c:86
Code: 0f b6 44 15 00 84 c0 0f 85 04 01 00 00 44 8b 4f 10 4c 8d 77 08 4d 89 f5 49 c1 ed 03 41 0f b6 44 15 00 84 c0 0f 85 1d 01 00 00 <45> 3b 0e 73 3a 48 8d 5f 0c 49 89 df 49 c1 ef 03 41 0f b6 04 17 84
RSP: 0018:ffffc90003a77358 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90003a77460 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff814c9c7c RDI: ffffc90003a77460
RBP: 1ffff9200074ee8e R08: ffffc90003a77470 R09: 0000000000000007
R10: fffff5200074ee81 R11: 1ffff9200074ee7f R12: ffff8880574dd940
R13: 1ffff9200074ee8d R14: ffffc90003a77468 R15: ffffc90003a773a8
 arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:936 [inline]
 __kmalloc_node+0xb0/0x240 mm/slab_common.c:943
 kmalloc_node include/linux/slab.h:589 [inline]
 __vmalloc_area_node mm/vmalloc.c:3057 [inline]
 __vmalloc_node_range+0x584/0x1390 mm/vmalloc.c:3243
 alloc_thread_stack_node kernel/fork.c:312 [inline]
 dup_task_struct+0x3d3/0x6b0 kernel/fork.c:989
 copy_process+0x5bd/0x4020 kernel/fork.c:2181
 kernel_clone+0x225/0x8b0 kernel/fork.c:2757
 __do_sys_clone3 kernel/fork.c:3056 [inline]
 __se_sys_clone3+0x2dc/0x360 kernel/fork.c:3040
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f31b27c3449
Code: d7 08 00 48 8d 3d fc d7 08 00 e8 e2 28 f6 ff 66 90 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7
RSP: 002b:00007ffe3d4f96b8 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f31b2745830 RCX: 00007f31b27c3449
RDX: 00007f31b2745830 RSI: 0000000000000058 RDI: 00007ffe3d4f9700
RBP: 00007f31b1ddd6c0 R08: 00007f31b1ddd6c0 R09: 00007ffe3d4f97e7
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 000000000000006e R14: 00007ffe3d4f9700 R15: 00007ffe3d4f97e8
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f b6 44 15 00       	movzbl 0x0(%rbp,%rdx,1),%eax
   5:	84 c0                	test   %al,%al
   7:	0f 85 04 01 00 00    	jne    0x111
   d:	44 8b 4f 10          	mov    0x10(%rdi),%r9d
  11:	4c 8d 77 08          	lea    0x8(%rdi),%r14
  15:	4d 89 f5             	mov    %r14,%r13
  18:	49 c1 ed 03          	shr    $0x3,%r13
  1c:	41 0f b6 44 15 00    	movzbl 0x0(%r13,%rdx,1),%eax
  22:	84 c0                	test   %al,%al
  24:	0f 85 1d 01 00 00    	jne    0x147
* 2a:	45 3b 0e             	cmp    (%r14),%r9d <-- trapping instruction
  2d:	73 3a                	jae    0x69
  2f:	48 8d 5f 0c          	lea    0xc(%rdi),%rbx
  33:	49 89 df             	mov    %rbx,%r15
  36:	49 c1 ef 03          	shr    $0x3,%r15
  3a:	41 0f b6 04 17       	movzbl (%r15,%rdx,1),%eax
  3f:	84                   	.byte 0x84