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 (ffffffff84cb6a70), but was 0000000000000001. (next=ffff8881c7f7c180). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:25! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 30209 Comm: syz-executor.5 Tainted: G W 5.4.55-syzkaller-00694-g5c524b17ccd3 #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: 9e cc 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 72 b7 2e ff 0f 0b 48 c7 c7 e9 cb 98 84 4c 89 e6 4c 89 f1 31 c0 e8 5c b7 2e ff <0f> 0b 48 c7 c7 4c cc 98 84 4c 89 f6 4c 89 e1 31 c0 e8 46 b7 2e ff RSP: 0018:ffff8881c7a072c8 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c7f7c188 RCX: 1396479c9a825a00 RDX: ffffc90002e70000 RSI: 0000000000005c67 RDI: 0000000000005c68 RBP: ffff8881c7f7c180 R08: ffffffff812becce R09: ffffed103b705df0 R10: ffffed103b705df0 R11: 0000000000000000 R12: ffffffff84cb6a70 R13: dffffc0000000000 R14: ffff8881c7f7c180 R15: ffff8881caf0a980 FS: 00007f8863bc2700(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004dadf0 CR3: 00000001ce05f004 CR4: 00000000001606f0 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: 0033:0x45cc79 Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8863bc1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000029e40 RCX: 000000000045cc79 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007fffdfb08adf R14: 00007f8863bc29c0 R15: 000000000078bf0c Modules linked in: ---[ end trace d2b541a76e58d370 ]--- RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23 Code: 9e cc 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 72 b7 2e ff 0f 0b 48 c7 c7 e9 cb 98 84 4c 89 e6 4c 89 f1 31 c0 e8 5c b7 2e ff <0f> 0b 48 c7 c7 4c cc 98 84 4c 89 f6 4c 89 e1 31 c0 e8 46 b7 2e ff RSP: 0018:ffff8881c7a072c8 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c7f7c188 RCX: 1396479c9a825a00 RDX: ffffc90002e70000 RSI: 0000000000005c67 RDI: 0000000000005c68 RBP: ffff8881c7f7c180 R08: ffffffff812becce R09: ffffed103b705df0 R10: ffffed103b705df0 R11: 0000000000000000 R12: ffffffff84cb6a70 R13: dffffc0000000000 R14: ffff8881c7f7c180 R15: ffff8881caf0a980 FS: 00007f8863bc2700(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002094617f CR3: 00000001ce05f001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600