list_add corruption. next->prev should be prev (ffffffff854d27e0), but was 0000000000000000. (next=ffff8881e0cbbb80).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:25!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 17337 Comm: syz-executor.0 Not tainted 5.4.93-syzkaller-00590-g1e5f5a14faba #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: db ff 1f 85 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 12 15 24 ff 0f 0b 48 c7 c7 26 ff 1f 85 4c 89 e6 4c 89 f1 31 c0 e8 fc 14 24 ff <0f> 0b 48 c7 c7 89 ff 1f 85 4c 89 f6 4c 89 e1 31 c0 e8 e6 14 24 ff
RSP: 0018:ffff8881b383f2c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881e0cbbb88 RCX: e3daeeb2e6bf5200
RDX: ffffc90001418000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881e0cbbb80 R08: ffffffff814e47a1 R09: ffffed103ee05e08
R10: ffffed103ee05e08 R11: 0000000000000000 R12: ffffffff854d27e0
R13: dffffc0000000000 R14: ffff8881e0cbbb80 R15: ffff8881e1345d80
FS:  00007f908b602700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001b55a2000 CR4: 00000000001406f0
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+0x48d/0xb30 drivers/base/firmware_loader/fallback.c:654
 _request_firmware+0xe7b/0x1350 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+0xee9/0x13c0 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+0x868/0xa00 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x9b9/0xd50 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x587/0x8d0 net/socket.c:2298
 ___sys_sendmsg net/socket.c:2352 [inline]
 __sys_sendmsg+0x2c4/0x3b0 net/socket.c:2398
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465b09
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:00007f908b602188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000005
RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffd6b17981f R14: 00007f908b602300 R15: 0000000000022000
Modules linked in:
---[ end trace 05fc2cc82b5e6845 ]---
RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23
Code: db ff 1f 85 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 12 15 24 ff 0f 0b 48 c7 c7 26 ff 1f 85 4c 89 e6 4c 89 f1 31 c0 e8 fc 14 24 ff <0f> 0b 48 c7 c7 89 ff 1f 85 4c 89 f6 4c 89 e1 31 c0 e8 e6 14 24 ff
RSP: 0018:ffff8881b383f2c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881e0cbbb88 RCX: e3daeeb2e6bf5200
RDX: ffffc90001418000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881e0cbbb80 R08: ffffffff814e47a1 R09: ffffed103ee05e08
R10: ffffed103ee05e08 R11: 0000000000000000 R12: ffffffff854d27e0
R13: dffffc0000000000 R14: ffff8881e0cbbb80 R15: ffff8881e1345d80
FS:  00007f908b602700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4806c78000 CR3: 00000001b55a2000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400