[v5.15] WARNING in restore_regulatory_settings (3)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: c16c81c81336 Linux 5.15.178
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12ff4c78580000
kernel config: https://syzkaller.appspot.com/x/.config?x=3ca28fba9b2e5c5
dashboard link: https://syzkaller.appspot.com/bug?extid=05c535e3e432e71518be
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3f2947e5e4dc/disk-c16c81c8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7034800fdaa8/vmlinux-c16c81c8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/42337be7c213/Image-c16c81c8.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+05c535...@syzkaller.appspotmail.com

------------[ cut here ]------------
Unexpected user alpha2: A�
WARNING: CPU: 1 PID: 9 at net/wireless/reg.c:439 is_user_regdom_saved net/wireless/reg.c:437 [inline]
WARNING: CPU: 1 PID: 9 at net/wireless/reg.c:439 restore_alpha2 net/wireless/reg.c:3372 [inline]
WARNING: CPU: 1 PID: 9 at net/wireless/reg.c:439 restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_power_efficient crda_timeout_work
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : is_user_regdom_saved net/wireless/reg.c:437 [inline]
pc : restore_alpha2 net/wireless/reg.c:3372 [inline]
pc : restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
lr : is_user_regdom_saved net/wireless/reg.c:437 [inline]
lr : restore_alpha2 net/wireless/reg.c:3372 [inline]
lr : restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
sp : ffff80001bcf7a20
x29: ffff80001bcf7af0 x28: dfff800000000000 x27: ffff0000c0848418
x26: ffff800016ead960 x25: ffff0000c0038400 x24: 0000000000000000
x23: 1ffff00002dd5b2c x22: 0000000000000041 x21: 0000000000000001
x20: ffff80001bcf7aa8 x19: ffff80001bc12000 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011b4e3fc x15: 00000000ffffffff
x14: ffff0000c0948000 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 9ec7446c0e6aae00
x8 : 9ec7446c0e6aae00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001bcf7198 x4 : ffff800014c50660 x3 : ffff8000085568c0
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000001a
Call trace:
is_user_regdom_saved net/wireless/reg.c:437 [inline]
restore_alpha2 net/wireless/reg.c:3372 [inline]
restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
crda_timeout_work+0x38/0x68 net/wireless/reg.c:539
process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
worker_thread+0x910/0x1034 kernel/workqueue.c:2457
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 4474774
hardirqs last enabled at (4474773): [<ffff80000832c1b4>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (4474774): [<ffff800011b49ab0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last enabled at (4474254): [<ffff8000081b6920>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last enabled at (4474254): [<ffff8000081b6920>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (4474161): [<ffff8000081b6fb8>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (4474161): [<ffff8000081b6fb8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (4474161): [<ffff8000081b6fb8>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (4474161): [<ffff8000081b6fb8>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace aa542b38765e91da ]---
------------[ cut here ]------------
Unexpected user alpha2: A�
WARNING: CPU: 1 PID: 9 at net/wireless/reg.c:439 is_user_regdom_saved net/wireless/reg.c:437 [inline]
WARNING: CPU: 1 PID: 9 at net/wireless/reg.c:439 restore_alpha2 net/wireless/reg.c:3372 [inline]
WARNING: CPU: 1 PID: 9 at net/wireless/reg.c:439 restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u4:0 Tainted: G W 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events_power_efficient crda_timeout_work
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : is_user_regdom_saved net/wireless/reg.c:437 [inline]
pc : restore_alpha2 net/wireless/reg.c:3372 [inline]
pc : restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
lr : is_user_regdom_saved net/wireless/reg.c:437 [inline]
lr : restore_alpha2 net/wireless/reg.c:3372 [inline]
lr : restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
sp : ffff80001bcf7a20
x29: ffff80001bcf7af0 x28: dfff800000000000 x27: ffff0000c0848418
x26: ffff800016ead960 x25: ffff0000c0038400 x24: 0000000000000000
x23: 1ffff00002dd5b2c x22: 0000000000000041 x21: 0000000000000001
x20: ffff80001bcf7aa8 x19: ffff80001bc12000 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011b4e3fc x15: 00000000ffffffff
x14: ffff0000c0948000 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 9ec7446c0e6aae00
x8 : 9ec7446c0e6aae00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001bcf7198 x4 : ffff800014c50660 x3 : ffff8000085568c0
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000001a
Call trace:
is_user_regdom_saved net/wireless/reg.c:437 [inline]
restore_alpha2 net/wireless/reg.c:3372 [inline]
restore_regulatory_settings+0x368/0x22cc net/wireless/reg.c:3464
crda_timeout_work+0x38/0x68 net/wireless/reg.c:539
process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
worker_thread+0x910/0x1034 kernel/workqueue.c:2457
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 4477470
hardirqs last enabled at (4477469): [<ffff80000832c1b4>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (4477470): [<ffff800011b49ab0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last enabled at (4477444): [<ffff80000c8d07f4>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (4477440): [<ffff80000c8d073c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18
---[ end trace aa542b38765e91dc ]---


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.