------------[ cut here ]------------ WARNING: CPU: 1 PID: 9395 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] WARNING: CPU: 1 PID: 9395 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Modules linked in: CPU: 1 PID: 9395 Comm: syz.1.1147 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Code: 24 4c 89 e7 e8 9e 22 d4 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 99 fd 96 f7 0f 0b e9 f6 f7 ff ff e8 8d fd 96 f7 <0f> 0b e9 48 fb ff ff e8 81 fd 96 f7 48 c7 c7 60 fd 23 8e 4c 89 e6 RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246 RAX: ffffffff89ee8d43 RBX: ffffffff89ee7b46 RCX: ffff88807eee8000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff88807eee8000 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805d7d63c0 R13: dffffc0000000000 R14: ffff88805d7d68b0 R15: ffff88801cf45024 FS: 00007fc3db2526c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004fc7f000 CR4: 00000000003506e0 Call Trace: ieee80211_beacon_get_tim+0xb8/0x560 net/mac80211/tx.c:5569 ieee80211_beacon_get include/net/mac80211.h:5440 [inline] mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:766 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802 mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295 __run_hrtimer kernel/time/hrtimer.c:1750 [inline] __hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1814 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:__asan_memset+0x31/0x40 mm/kasan/shadow.c:87 Code: 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01 00 00 00 e8 8e ea ff ff 84 c0 74 11 4c 89 f7 89 ee 48 89 da 5b 41 5e <5d> e9 59 a4 91 08 31 c0 5b 41 5e 5d c3 66 90 f3 0f 1e fa 41 57 41 RSP: 0018:ffffc9000353f9b0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff841d90fa RDX: 000000000000000b RSI: 0000000000000000 RDI: ffffc9000353fd35 RBP: 0000000000000000 R08: ffffc9000353fd3f R09: 1ffff920006a7fa7 R10: dffffc0000000000 R11: fffff520006a7fa8 R12: 0000000000000000 R13: ffffc9000353fb40 R14: ffffc9000353fd30 R15: ffffc9000353fd40 iov_iter_init lib/iov_iter.c:289 [inline] __import_iovec+0x3fa/0x860 lib/iov_iter.c:1501 import_iovec+0x73/0xa0 lib/iov_iter.c:1535 copy_msghdr_from_user net/socket.c:2532 [inline] recvmsg_copy_msghdr net/socket.c:2780 [inline] ___sys_recvmsg+0x437/0x510 net/socket.c:2852 do_recvmmsg+0x360/0x7d0 net/socket.c:2950 __sys_recvmmsg net/socket.c:3029 [inline] __do_sys_recvmmsg net/socket.c:3052 [inline] __se_sys_recvmmsg net/socket.c:3045 [inline] __x64_sys_recvmmsg+0x191/0x240 net/socket.c:3045 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fc3da38eec9 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:00007fc3db252038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fc3da5e6090 RCX: 00007fc3da38eec9 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fc3da411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc3da5e6128 R14: 00007fc3da5e6090 R15: 00007fff544fb1e8 ---------------- Code disassembly (best guess): 0: 53 push %rbx 1: 48 89 d3 mov %rdx,%rbx 4: 89 f5 mov %esi,%ebp 6: 49 89 fe mov %rdi,%r14 9: 48 8b 4c 24 18 mov 0x18(%rsp),%rcx e: 48 89 d6 mov %rdx,%rsi 11: ba 01 00 00 00 mov $0x1,%edx 16: e8 8e ea ff ff call 0xffffeaa9 1b: 84 c0 test %al,%al 1d: 74 11 je 0x30 1f: 4c 89 f7 mov %r14,%rdi 22: 89 ee mov %ebp,%esi 24: 48 89 da mov %rbx,%rdx 27: 5b pop %rbx 28: 41 5e pop %r14 * 2a: 5d pop %rbp <-- trapping instruction 2b: e9 59 a4 91 08 jmp 0x891a489 30: 31 c0 xor %eax,%eax 32: 5b pop %rbx 33: 41 5e pop %r14 35: 5d pop %rbp 36: c3 ret 37: 66 90 xchg %ax,%ax 39: f3 0f 1e fa endbr64 3d: 41 57 push %r15 3f: 41 rex.B