------------[ cut here ]------------ no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0xfff with flags 0x20 WARNING: CPU: 0 PID: 144 at net/mac80211/rate.c:385 __rate_control_send_low+0x635/0x880 net/mac80211/rate.c:380 Modules linked in: CPU: 0 PID: 144 Comm: kworker/u4:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: bat_events batadv_nc_worker RIP: 0010:__rate_control_send_low+0x635/0x880 net/mac80211/rate.c:380 Code: 30 42 0f b6 04 28 84 c0 0f 85 e6 01 00 00 41 8b 0e 48 c7 c7 80 54 be 8b 48 8b 74 24 10 44 8b 44 24 1c 45 89 e1 e8 3b a9 70 f7 <0f> 0b e9 78 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 03 fa ff RSP: 0018:ffffc90000007560 EFLAGS: 00010246 RAX: c12c385325233100 RBX: 000000000000000c RCX: ffff88801aba1e00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 0000000000000084 R08: ffff8880b8e28c13 R09: 1ffff110171c5182 R10: dffffc0000000000 R11: ffffed10171c5183 R12: 0000000000000020 R13: dffffc0000000000 R14: ffff8880799bb358 R15: ffff8880301ce8e8 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c307dcf CR3: 0000000061dfb000 CR4: 00000000003506f0 Call Trace: rate_control_send_low+0x194/0x790 net/mac80211/rate.c:405 rate_control_get_rate+0x20b/0x5c0 net/mac80211/rate.c:921 ieee80211_beacon_get_finish+0x38d/0x6b0 net/mac80211/tx.c:5228 ieee80211_beacon_get_ap+0x1429/0x1970 net/mac80211/tx.c:5331 __ieee80211_beacon_get+0x10eb/0x1600 net/mac80211/tx.c:5427 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:lock_acquire+0xe3/0x410 kernel/locking/lockdep.c:5727 Code: 06 76 00 4c 0f a3 35 64 27 e3 0c 73 0d e8 f5 9f 08 00 84 c0 0f 84 18 02 00 00 48 c7 c0 ec 55 4a 8e 48 c1 e8 03 42 0f b6 04 38 <84> c0 0f 85 07 02 00 00 83 3d fa 5b e3 0c 00 0f 84 f1 00 00 00 65 RSP: 0018:ffffc90002e679c0 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: 0000000000000000 RCX: c12c385325233100 RDX: 0000000000000000 RSI: ffffffff8afc6f60 RDI: ffffffff8afc6f20 RBP: ffffc90002e67ad8 R08: ffffffff8e4a212f R09: 1ffffffff1c94425 R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 1ffff920005ccf44 R13: ffffffff8cd2ff20 R14: 0000000000000000 R15: dffffc0000000000 rcu_lock_acquire include/linux/rcupdate.h:334 [inline] rcu_read_lock include/linux/rcupdate.h:786 [inline] batadv_nc_process_nc_paths+0xdb/0x390 net/batman-adv/network-coding.c:687 batadv_nc_worker+0x429/0x610 net/batman-adv/network-coding.c:728 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 76 00 jbe 0x2 2: 4c 0f a3 35 64 27 e3 bt %r14,0xce32764(%rip) # 0xce3276e 9: 0c a: 73 0d jae 0x19 c: e8 f5 9f 08 00 call 0x8a006 11: 84 c0 test %al,%al 13: 0f 84 18 02 00 00 je 0x231 19: 48 c7 c0 ec 55 4a 8e mov $0xffffffff8e4a55ec,%rax 20: 48 c1 e8 03 shr $0x3,%rax 24: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax * 29: 84 c0 test %al,%al <-- trapping instruction 2b: 0f 85 07 02 00 00 jne 0x238 31: 83 3d fa 5b e3 0c 00 cmpl $0x0,0xce35bfa(%rip) # 0xce35c32 38: 0f 84 f1 00 00 00 je 0x12f 3e: 65 gs