------------[ cut here ]------------ WARNING: CPU: 0 PID: 6325 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] WARNING: CPU: 0 PID: 6325 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Modules linked in: CPU: 0 PID: 6325 Comm: syz.1.149 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 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 2e a7 c1 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 09 ee 83 f7 0f 0b e9 f6 f7 ff ff e8 fd ed 83 f7 <0f> 0b e9 48 fb ff ff e8 f1 ed 83 f7 48 c7 c7 00 61 64 8e 4c 89 e6 RSP: 0018:ffffc90000007a18 EFLAGS: 00010246 RAX: ffffffff8a032e63 RBX: ffffffff8a031c66 RCX: ffff88802bbe8000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff88802bbe8000 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805bc9e3c0 R13: dffffc0000000000 R14: ffff88805bc9e8b0 R15: ffff88805c80a424 FS: 00007fdfa99a16c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000fc3030 CR3: 0000000075aac000 CR4: 00000000003506f0 Call Trace: ieee80211_beacon_get_tim+0xbf/0x580 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+0x520/0xc40 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+0xd3/0x190 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:orc_find arch/x86/kernel/unwind_orc.c:206 [inline] RIP: 0010:unwind_next_frame+0x1f2/0x2970 arch/x86/kernel/unwind_orc.c:494 Code: ff 00 00 00 81 40 0f 92 c5 4c 89 ff 48 c7 c6 00 00 c0 8a e8 70 e6 4b 00 49 81 ff 00 00 c0 8a 0f 93 c0 40 08 e8 4c 89 7c 24 48 <0f> 85 d7 00 00 00 49 29 df 49 c1 ef 08 8b 05 73 18 6c 0b 48 89 44 RSP: 0018:ffffc9000cf56d18 EFLAGS: 00000246 RAX: ffffffff813b3800 RBX: ffffffff81000000 RCX: ffff88802bbe8000 RDX: 0000000000000002 RSI: ffffffff8ac00000 RDI: ffffffff88705229 RBP: ffffc9000cf56e00 R08: ffffc9000cf56eb0 R09: 000000000000000d R10: 0000000000000004 R11: 0000000000000002 R12: ffffc9000cf56de8 R13: dffffc0000000000 R14: ffffc9000cf56e1d R15: ffffffff88705229 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 save_stack+0x125/0x230 mm/page_owner.c:128 __set_page_owner+0x1d/0x60 mm/page_owner.c:192 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1c1/0x200 mm/page_alloc.c:1581 prep_new_page mm/page_alloc.c:1588 [inline] get_page_from_freelist+0x1951/0x19e0 mm/page_alloc.c:3220 __alloc_pages+0x1f0/0x460 mm/page_alloc.c:4500 __folio_alloc+0x10/0x20 mm/page_alloc.c:4532 vma_alloc_folio+0x47a/0x8f0 mm/mempolicy.c:2242 wp_page_copy mm/memory.c:3090 [inline] do_wp_page+0x1243/0x35f0 mm/memory.c:3469 handle_pte_fault mm/memory.c:5063 [inline] __handle_mm_fault mm/memory.c:5188 [inline] handle_mm_fault+0x135d/0x4c00 mm/memory.c:5353 do_user_addr_fault+0x730/0x12c0 arch/x86/mm/fault.c:1371 handle_page_fault arch/x86/mm/fault.c:1463 [inline] exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608 RIP: 0010:__put_user_nocheck_4+0x7/0x10 arch/x86/lib/putuser.S:98 Code: 01 ca c3 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 90 f3 0f 1e fa 0f 01 cb <89> 01 31 c9 0f 01 ca c3 90 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 RSP: 0018:ffffc9000cf578d8 EFLAGS: 00050202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000200000fc3030 RDX: ffff88802bbe8000 RSI: 0000000000000002 RDI: 00000000ffffffff RBP: ffffc9000cf57a70 R08: ffffc9000cf576a7 R09: 1ffff920019eaed4 R10: dffffc0000000000 R11: fffff520019eaed5 R12: 0000000000000002 R13: 0000000000000000 R14: 000000000003f0bd R15: 0000200000fc3000 ____sys_recvmsg+0x3ba/0x5e0 net/socket.c:2826 ___sys_recvmsg+0x216/0x590 net/socket.c:2855 do_recvmmsg+0x39a/0x870 net/socket.c:2949 __sys_recvmmsg net/socket.c:3028 [inline] __do_sys_recvmmsg net/socket.c:3051 [inline] __se_sys_recvmmsg net/socket.c:3044 [inline] __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3044 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fdfa8b9c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdfa99a1028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fdfa8e16090 RCX: 00007fdfa8b9c799 RDX: 03fffffffffffeda RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fdfa8c32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdfa8e16128 R14: 00007fdfa8e16090 R15: 00007ffdcc5cd258 ---------------- Code disassembly (best guess): 0: ff 00 incl (%rax) 2: 00 00 add %al,(%rax) 4: 81 40 0f 92 c5 4c 89 addl $0x894cc592,0xf(%rax) b: ff 48 c7 decl -0x39(%rax) e: c6 00 00 movb $0x0,(%rax) 11: c0 8a e8 70 e6 4b 00 rorb $0x0,0x4be670e8(%rdx) 18: 49 81 ff 00 00 c0 8a cmp $0xffffffff8ac00000,%r15 1f: 0f 93 c0 setae %al 22: 40 08 e8 or %bpl,%al 25: 4c 89 7c 24 48 mov %r15,0x48(%rsp) * 2a: 0f 85 d7 00 00 00 jne 0x107 <-- trapping instruction 30: 49 29 df sub %rbx,%r15 33: 49 c1 ef 08 shr $0x8,%r15 37: 8b 05 73 18 6c 0b mov 0xb6c1873(%rip),%eax # 0xb6c18b0 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 44 rex.R