syzbot

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WARNING: CPU: 0 PID: 4608 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 0 PID: 4608 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Modules linked in:
CPU: 0 PID: 4608 Comm: syz.2.38 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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 40 d3 e3 f7 0f 0b 48 8b 7c 24 20 e8 04 90 7f fe e9 dd e9 ff ff e8 2a d3 e3 f7 0f 0b e9 f1 ee ff ff e8 1e d3 e3 f7 <0f> 0b e9 61 f2 ff ff e8 12 d3 e3 f7 48 c7 c7 f0 73 fa 8d 4c 89 f6
RSP: 0018:ffffc900000078a0 EFLAGS: 00010246
RAX: ffffffff899d0342 RBX: 0000000000000000 RCX: ffff88802a2c9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007aa8 R08: ffff88802a2c9dc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff92000000f2c
R13: dffffc0000000000 R14: ffff8880748b2258 R15: ffff88801dbed200
FS:  00007ff1dba066c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002db030 CR3: 00000000799b4000 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:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 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:folio_add_lru_vma+0x0/0x1f0 mm/swap.c:540
Code: ff ff e8 13 3e d2 ff e9 e3 f6 ff ff e8 09 3e d2 ff e9 19 f7 ff ff e8 ff 3d d2 ff e9 4f f7 ff ff e8 f5 3d d2 ff e9 9b f7 ff ff <55> 41 57 41 56 41 54 53 49 89 f6 48 89 fb 49 bc 00 00 00 00 00 fc
RSP: 0018:ffffc90003637398 EFLAGS: 00000293
RAX: ffffffff81ad68d7 RBX: ffffea00014b7a40 RCX: ffff88802a2c9dc0
RDX: 0000000000000000 RSI: ffff888024fd0288 RDI: ffffea00014b7a40
RBP: ffffc90003637530 R08: dffffc0000000000 R09: fffff94000296f49
R10: fffff94000296f49 R11: 1ffffd4000296f48 R12: ffff888024fd0288
R13: 000000000f8de225 R14: 0000000000000000 R15: dffffc0000000000
 wp_page_copy+0xadf/0x1640 mm/memory.c:3223
 handle_pte_fault mm/memory.c:5049 [inline]
 __handle_mm_fault mm/memory.c:5173 [inline]
 handle_mm_fault+0x1ca6/0x3e60 mm/memory.c:5294
 do_user_addr_fault+0x51f/0xb10 arch/x86/mm/fault.c:1340
 handle_page_fault arch/x86/mm/fault.c:1431 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1487
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffffc900036378d8 EFLAGS: 00050202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00002000002db030
RDX: ffff88802a2c9dc0 RSI: 0000000000000002 RDI: 00000000ffffffff
RBP: ffffc90003637a70 R08: dffffc0000000000 R09: fffff520006c6ed9
R10: fffff520006c6ed9 R11: 1ffff920006c6ed8 R12: dffffc0000000000
R13: 00002000002db000 R14: 0000000000000000 R15: 0000000000000002
 ____sys_recvmsg+0x367/0x580 net/socket.c:2751
 ___sys_recvmsg+0x1b2/0x510 net/socket.c:2780
 do_recvmmsg+0x359/0x7d0 net/socket.c:2874
 __sys_recvmmsg net/socket.c:2953 [inline]
 __do_sys_recvmmsg net/socket.c:2976 [inline]
 __se_sys_recvmmsg net/socket.c:2969 [inline]
 __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2969
 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: 0033:0x7ff1dab8efc9
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:00007ff1dba06038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007ff1dade6090 RCX: 00007ff1dab8efc9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007ff1dac11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff1dade6128 R14: 00007ff1dade6090 R15: 00007ffe1739f3e8
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	e8 13 3e d2 ff       	call   0xffd23e18
   5:	e9 e3 f6 ff ff       	jmp    0xfffff6ed
   a:	e8 09 3e d2 ff       	call   0xffd23e18
   f:	e9 19 f7 ff ff       	jmp    0xfffff72d
  14:	e8 ff 3d d2 ff       	call   0xffd23e18
  19:	e9 4f f7 ff ff       	jmp    0xfffff76d
  1e:	e8 f5 3d d2 ff       	call   0xffd23e18
  23:	e9 9b f7 ff ff       	jmp    0xfffff7c3
* 28:	55                   	push   %rbp <-- trapping instruction
  29:	41 57                	push   %r15
  2b:	41 56                	push   %r14
  2d:	41 54                	push   %r12
  2f:	53                   	push   %rbx
  30:	49 89 f6             	mov    %rsi,%r14
  33:	48 89 fb             	mov    %rdi,%rbx
  36:	49                   	rex.WB
  37:	bc 00 00 00 00       	mov    $0x0,%esp
  3c:	00 fc                	add    %bh,%ah