syzbot

platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
platform regulatory.0: Falling back to sysfs fallback for: regulatory.db
list_add corruption. next->prev should be prev (ffffffff861080a0), but was 0000000000000001. (next=ffff8881e3922d80).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:25!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6817 Comm: syz-executor.3 Not tainted 5.4.125-syzkaller-00029-g5970ec26e0c8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23
Code: e0 8d 03 85 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 42 7a 21 ff 0f 0b 48 c7 c7 a0 8c 03 85 4c 89 e6 4c 89 f1 31 c0 e8 2c 7a 21 ff <0f> 0b 48 c7 c7 60 8d 03 85 4c 89 f6 4c 89 e1 31 c0 e8 16 7a 21 ff
RSP: 0018:ffff8881dc2472c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881e3922d88 RCX: a23746bbb0834600
RDX: ffffc9000d971000 RSI: 00000000000157c6 RDI: 00000000000157c7
RBP: ffff8881e3922d80 R08: ffffffff814e90e7 R09: ffffed103edc3eb2
R10: ffffed103edc3eb2 R11: 0000000000000000 R12: ffffffff861080a0
R13: dffffc0000000000 R14: ffff8881e3922d80 R15: ffff8881dc145e80
FS:  00007f35e5d78700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35e5d77108 CR3: 00000001e5c1c000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:515 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:580 [inline]
 firmware_fallback_sysfs+0x480/0xb20 drivers/base/firmware_loader/fallback.c:654
 _request_firmware+0x1287/0x1770 drivers/base/firmware_loader/main.c:788
 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:831
 reg_reload_regdb+0xa0/0x220 net/wireless/reg.c:1083
 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline]
 genl_rcv_msg+0xed8/0x13b0 net/netlink/genetlink.c:654
 netlink_rcv_skb+0x200/0x480 net/netlink/af_netlink.c:2478
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:665
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x865/0x9f0 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x9ab/0xd40 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x583/0x8c0 net/socket.c:2298
 ___sys_sendmsg net/socket.c:2352 [inline]
 __sys_sendmsg+0x2c4/0x3b0 net/socket.c:2398
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f35e8022a39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f35e5d78188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f35e8126020 RCX: 00007f35e8022a39
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000006
RBP: 00007f35e807cc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd66ba94f R14: 00007f35e5d78300 R15: 0000000000022000
Modules linked in:
---[ end trace f0fb3458dd6ad410 ]---
RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23
Code: e0 8d 03 85 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 42 7a 21 ff 0f 0b 48 c7 c7 a0 8c 03 85 4c 89 e6 4c 89 f1 31 c0 e8 2c 7a 21 ff <0f> 0b 48 c7 c7 60 8d 03 85 4c 89 f6 4c 89 e1 31 c0 e8 16 7a 21 ff
RSP: 0018:ffff8881dc2472c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881e3922d88 RCX: a23746bbb0834600
RDX: ffffc9000d971000 RSI: 00000000000157c6 RDI: 00000000000157c7
RBP: ffff8881e3922d80 R08: ffffffff814e90e7 R09: ffffed103edc3eb2
R10: ffffed103edc3eb2 R11: 0000000000000000 R12: ffffffff861080a0
R13: dffffc0000000000 R14: ffff8881e3922d80 R15: ffff8881dc145e80
FS:  00007f35e5d78700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f35e5d77108 CR3: 00000001e5c1c000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400