rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2692 jiffies s: 4205 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4748 Comm: syz.8.44 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:112 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x158/0x290 mm/kasan/generic.c:189
Code: 02 74 15 49 bf 06 00 00 00 00 fc ff df 43 80 3c 3e 00 0f 85 fb 00 00 00 41 be 08 00 00 00 41 29 ee 4d 01 f3 49 89 df 4d 29 df <4d> 8d 67 07 4d 85 ff 4d 0f 49 e7 49 c1 ec 03 45 85 e4 74 21 45 31
RSP: 0018:ffffc90000007230 EFLAGS: 00000046
RAX: ffffffff81a8d401 RBX: fffff52000000e80 RCX: ffffffff81a8d4a7
RDX: 0000000000000001 RSI: 0000000000000100 RDI: ffffc90000007300
RBP: 0000000000000000 R08: ffffc900000073ff R09: 1ffff92000000e7f
R10: dffffc0000000000 R11: fffff52000000e60 R12: dffffc0000000001
R13: ffff888055b67960 R14: 1ffff92000000e60 R15: 0000000000000020
FS:  00007faff11926c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3401cff8 CR3: 000000007e4bf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 memset+0x1e/0x40 mm/kasan/shadow.c:44
 perf_swevent_hrtimer+0x107/0x630 kernel/events/core.c:10950
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x50b/0xd50 kernel/time/hrtimer.c:1815
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1877
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__tasklet_schedule+0x0/0x10 kernel/softirq.c:779
Code: 49 89 1e 5b 41 5e 5d c3 89 fe 89 fd 48 c7 c7 80 17 9d 8c e8 62 c2 e9 02 89 ef eb ba 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <48> c7 c6 78 76 02 00 ba 06 00 00 00 eb 02 66 90 55 48 89 e5 41 57
RSP: 0018:ffffc90000007878 EFLAGS: 00000282
RAX: ffffffff89aeb185 RBX: 000000000000004c RCX: ffff888030399e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8880783915e0
RBP: ffffc90000007930 R08: ffff8880783915ef R09: 1ffff1100f0722bd
R10: dffffc0000000000 R11: ffffed100f0722be R12: ffff888059219780
R13: dffffc0000000000 R14: ffff888078393338 R15: ffff8880592197f0
 mac80211_hwsim_rx+0x285/0x5f0 drivers/net/wireless/mac80211_hwsim.c:1609
 mac80211_hwsim_tx_frame_no_nl+0xe26/0x12c0 drivers/net/wireless/mac80211_hwsim.c:1739
 mac80211_hwsim_tx_frame+0x1b5/0x200 drivers/net/wireless/mac80211_hwsim.c:2058
 mac80211_hwsim_beacon_tx+0x61e/0xae0 drivers/net/wireless/mac80211_hwsim.c:2121
 __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:1751 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1832
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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:format_decode+0x0/0x1300 lib/vsprintf.c:2513
Code: 44 89 e1 80 e1 07 38 c1 0f 8c 6d ff ff ff 4c 89 e7 e8 e4 41 b3 f7 e9 60 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 48 49 89 f7 49 89 fe 65 48
RSP: 0018:ffffc900036767e8 EFLAGS: 00000a06
RAX: 1ffff920006ced1c RBX: 000000000000005b RCX: 1ffff920006ced1d
RDX: 1ffff920006ced1e RSI: ffffc90003676838 RDI: ffffffff8a8ce1c0
RBP: 000000007fffffff R08: ffffc900036768f7 R09: ffffc900036768e0
R10: dffffc0000000000 R11: fffff520006ced1f R12: ffffc90083676abf
R13: ffffc90003676ac0 R14: ffffc90003676ac0 R15: ffffffff8a8ce1c0
 vsnprintf+0xef/0x1c20 lib/vsprintf.c:2757
 sprintf+0xe4/0x140 lib/vsprintf.c:3009
 print_time kernel/printk/printk.c:1274 [inline]
 info_print_prefix+0x168/0x360 kernel/printk/printk.c:1300
 record_print_text+0x173/0x440 kernel/printk/printk.c:1349
 console_emit_next_record+0x598/0xba0 kernel/printk/printk.c:2760
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x223/0x630 kernel/printk/printk.c:2906
 vprintk_emit+0x4b3/0x6a0 kernel/printk/printk.c:2303
 dev_vprintk_emit+0x34e/0x400 drivers/base/core.c:4948
 dev_printk_emit+0xeb/0x139 drivers/base/core.c:4959
 _dev_warn+0x11b/0x16c drivers/base/core.c:5015
 _request_firmware+0xc80/0x1250 drivers/base/firmware_loader/main.c:880
 request_firmware+0x32/0x50 drivers/base/firmware_loader/main.c:933
 reg_reload_regdb+0x96/0x490 net/wireless/reg.c:1116
 genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:756
 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
 genl_rcv_msg+0x604/0x790 net/netlink/genetlink.c:850
 netlink_rcv_skb+0x1fb/0x450 net/netlink/af_netlink.c:2511
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x74d/0x8d0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5be/0x970 net/socket.c:2518
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572
 __sys_sendmsg net/socket.c:2601 [inline]
 __do_sys_sendmsg net/socket.c:2610 [inline]
 __se_sys_sendmsg+0x1bb/0x2a0 net/socket.c:2608
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7faff039ce59
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:00007faff1192028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007faff0615fa0 RCX: 00007faff039ce59
RDX: 0000000000000010 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007faff0432d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faff0616038 R14: 00007faff0615fa0 R15: 00007fffe9ee5fd8
 </TASK>