platform regulatory.0: Falling back to sysfs fallback for: regulatory.db list_add corruption. next->prev should be prev (ffffffff84cb6590), but was 0000000000000000. (next=ffff8881c8e7fb80). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:25! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6921 Comm: syz-executor.0 Not tainted 5.4.42-syzkaller-00393-gea7bbd69ade9 #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: de b1 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 62 5a 2f ff 0f 0b 48 c7 c7 29 b1 98 84 4c 89 e6 4c 89 f1 31 c0 e8 4c 5a 2f ff <0f> 0b 48 c7 c7 8c b1 98 84 4c 89 f6 4c 89 e1 31 c0 e8 36 5a 2f ff RSP: 0018:ffff88818a3eed48 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c8e7fb88 RCX: d76762a83e428500 RDX: ffffc900038a5000 RSI: 00000000000091a4 RDI: 00000000000091a5 RBP: ffff8881c8e7fb80 R08: ffffffff812be12e R09: ffffed103b725df0 R10: ffffed103b725df0 R11: 0000000000000000 R12: ffffffff84cb6590 R13: dffffc0000000000 R14: ffff8881c8e7fb80 R15: ffff8881ca80d980 FS: 00007f8b892f4700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 00000001d74a8006 CR4: 00000000001606e0 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+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] kernel_sendmsg+0xe2/0x120 net/socket.c:678 sock_no_sendpage+0x145/0x1b0 net/core/sock.c:2745 kernel_sendpage net/socket.c:3764 [inline] sock_sendpage+0xd0/0x120 net/socket.c:936 pipe_to_sendpage+0x23b/0x300 fs/splice.c:449 splice_from_pipe_feed fs/splice.c:500 [inline] __splice_from_pipe+0x2d3/0x870 fs/splice.c:624 splice_from_pipe fs/splice.c:659 [inline] generic_splice_sendpage+0x184/0x210 fs/splice.c:829 splice_direct_to_actor+0x496/0xb00 fs/splice.c:976 do_splice_direct+0x28b/0x3e0 fs/splice.c:1064 do_sendfile+0x8d6/0x1100 fs/read_write.c:1467 __do_sys_sendfile64 fs/read_write.c:1528 [inline] __se_sys_sendfile64 fs/read_write.c:1514 [inline] __x64_sys_sendfile64+0x1d4/0x230 fs/read_write.c:1514 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 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:00007f8b892f3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00000000004fc540 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000008 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000100000001 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008dc R14: 00000000004cba16 R15: 00007f8b892f46d4 Modules linked in: ---[ end trace a6f78c55e3e78e3b ]--- RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23 Code: de b1 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 62 5a 2f ff 0f 0b 48 c7 c7 29 b1 98 84 4c 89 e6 4c 89 f1 31 c0 e8 4c 5a 2f ff <0f> 0b 48 c7 c7 8c b1 98 84 4c 89 f6 4c 89 e1 31 c0 e8 36 5a 2f ff RSP: 0018:ffff88818a3eed48 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c8e7fb88 RCX: d76762a83e428500 RDX: ffffc900038a5000 RSI: 00000000000091a4 RDI: 00000000000091a5 RBP: ffff8881c8e7fb80 R08: ffffffff812be12e R09: ffffed103b725df0 R10: ffffed103b725df0 R11: 0000000000000000 R12: ffffffff84cb6590 R13: dffffc0000000000 R14: ffff8881c8e7fb80 R15: ffff8881ca80d980 FS: 00007f8b892f4700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000021000000 CR3: 00000001d74a8006 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400