list_add corruption. next->prev should be prev (ffffffff84cb53a0), but was 0000000000000000. (next=ffff8881ced62c80).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:25!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15121 Comm: syz-executor.4 Not tainted 5.4.35-syzkaller-00725-g7f84f8f18418 #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: 8e 8a 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 e2 78 2f ff 0f 0b 48 c7 c7 d9 89 98 84 4c 89 e6 4c 89 f1 31 c0 e8 cc 78 2f ff <0f> 0b 48 c7 c7 3c 8a 98 84 4c 89 f6 4c 89 e1 31 c0 e8 b6 78 2f ff
RSP: 0018:ffff8881c855f2c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881ced62c88 RCX: 5149f616ba145a00
RDX: ffffc90004413000 RSI: 0000000000004ec6 RDI: 0000000000004ec7
RBP: ffff8881ced62c80 R08: ffffffff812bdcbe R09: ffffed103b705de0
R10: ffffed103b705de0 R11: 0000000000000000 R12: ffffffff84cb53a0
R13: dffffc0000000000 R14: ffff8881ced62c80 R15: ffff8881cb267480
FS:  00007f8ae4c77700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff5b996f28 CR3: 0000000177e4d005 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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+0xe82/0x1360 drivers/base/firmware_loader/main.c:783
 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:826
 reg_reload_regdb+0xa6/0x220 net/wireless/reg.c:1083
 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline]
 genl_rcv_msg+0xeef/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+0x8ad/0xa50 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x9de/0xd80 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x58a/0x8d0 net/socket.c:2298
 ___sys_sendmsg net/socket.c:2352 [inline]
 __sys_sendmsg+0x2d5/0x3c0 net/socket.c:2398
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c829
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8ae4c76c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004fe880 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000977 R14: 00000000004d5b40 R15: 00007f8ae4c776d4
Modules linked in:
---[ end trace 8507b6abb056c72e ]---
RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23
Code: 8e 8a 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 e2 78 2f ff 0f 0b 48 c7 c7 d9 89 98 84 4c 89 e6 4c 89 f1 31 c0 e8 cc 78 2f ff <0f> 0b 48 c7 c7 3c 8a 98 84 4c 89 f6 4c 89 e1 31 c0 e8 b6 78 2f ff
RSP: 0018:ffff8881c855f2c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881ced62c88 RCX: 5149f616ba145a00
RDX: ffffc90004413000 RSI: 0000000000004ec6 RDI: 0000000000004ec7
RBP: ffff8881ced62c80 R08: ffffffff812bdcbe R09: ffffed103b705de0
R10: ffffed103b705de0 R11: 0000000000000000 R12: ffffffff84cb53a0
R13: dffffc0000000000 R14: ffff8881ced62c80 R15: ffff8881cb267480
FS:  00007f8ae4c77700(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf1812c010 CR3: 0000000177e4d003 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400