sched: RT throttling activated ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4558 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline] WARNING: CPU: 1 PID: 4558 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083 Modules linked in: CPU: 1 PID: 4558 Comm: syz.3.60 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:4859 [inline] RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083 Code: 2a f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d 4b 2a f8 0f 0b e9 03 ef ff ff e8 01 4b 2a f8 <0f> 0b e9 76 f2 ff ff e8 a5 92 6d 00 89 d9 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246 RAX: ffffffff894ed60f RBX: ffff888023126268 RCX: ffff88807cd7d940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000dd0b08 R08: ffff88807cd7d940 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807605d000 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c FS: 00007fe01fdd36c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000002bc030 CR3: 000000007f458000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202 ieee80211_beacon_get include/net/mac80211.h:4983 [inline] mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x4f2/0xb70 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 handle_softirqs+0x339/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__mutex_trylock_common+0x122/0x260 kernel/locking/mutex.c:-1 Code: 3f 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 0f 85 a3 00 00 00 83 3d 5a 6d d1 14 00 75 06 41 83 ff 02 73 51 4c 8b 24 24 14 4c 3b 24 24 0f 85 d8 00 00 00 83 e0 03 4c 8b 24 24 49 89 c7 RSP: 0018:ffffc900049074e0 EFLAGS: 00000293 RAX: 0000000000000004 RBX: ffffc90004907520 RCX: ffffffff962daf03 RDX: 1ffffffff2c5b5f0 RSI: 1ffffffff1b142e1 RDI: ffff88807b836538 RBP: ffffc90004907590 R08: ffff88807b83653f R09: 1ffff1100f706ca7 R10: dffffc0000000000 R11: ffffed100f706ca8 R12: ffff88807cd7d940 R13: 1ffff92000920ea0 R14: ffff88807b836538 R15: 0000000000000000 __mutex_trylock kernel/locking/mutex.c:146 [inline] __mutex_lock_common+0x1f1/0x2400 kernel/locking/mutex.c:598 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 __unix_dgram_recvmsg+0x205/0xd90 net/unix/af_unix.c:2312 ____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1 ___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706 do_recvmmsg+0x382/0x850 net/socket.c:2800 __sys_recvmmsg net/socket.c:2879 [inline] __do_sys_recvmmsg net/socket.c:2902 [inline] __se_sys_recvmmsg net/socket.c:2895 [inline] __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2895 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe020792799 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:00007fe01fdd3028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fe020a0c090 RCX: 00007fe020792799 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007fe020828c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe020a0c128 R14: 00007fe020a0c090 R15: 00007ffce6af3d08 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 7: fc ff df a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax e: 84 c0 test %al,%al 10: 0f 85 a3 00 00 00 jne 0xb9 16: 83 3d 5a 6d d1 14 00 cmpl $0x0,0x14d16d5a(%rip) # 0x14d16d77 1d: 75 06 jne 0x25 1f: 41 83 ff 02 cmp $0x2,%r15d 23: 73 51 jae 0x76 25: 4c 8b 24 24 mov (%rsp),%r12 * 29: eb 14 jmp 0x3f <-- trapping instruction 2b: 4c 3b 24 24 cmp (%rsp),%r12 2f: 0f 85 d8 00 00 00 jne 0x10d 35: 83 e0 03 and $0x3,%eax 38: 4c 8b 24 24 mov (%rsp),%r12 3c: 49 89 c7 mov %rax,%r15