netlink: 1280 bytes leftover after parsing attributes in process `syz-executor.5'. 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 (ffffffff84cb7210), but was 0000000000000000. (next=ffff8881c787b780). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:25! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10790 Comm: syz-executor.5 Tainted: G W 5.4.62-syzkaller-01109-g3f20ba7d5d1d #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: 8f 09 99 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 82 d4 30 ff 0f 0b 48 c7 c7 da 08 99 84 4c 89 e6 4c 89 f1 31 c0 e8 6c d4 30 ff <0f> 0b 48 c7 c7 3d 09 99 84 4c 89 f6 4c 89 e1 31 c0 e8 56 d4 30 ff RSP: 0018:ffff888174bb6d48 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c787b788 RCX: 195622c1d3433000 RDX: ffffc900014d7000 RSI: 000000000000964e RDI: 000000000000964f RBP: ffff8881c787b780 R08: ffffffff812b99ce R09: ffffed103b725e00 R10: ffffed103b725e00 R11: 0000000000000000 R12: ffffffff84cb7210 R13: dffffc0000000000 R14: ffff8881c787b780 R15: ffff88817537c580 FS: 00007ff087b13700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020107000 CR3: 000000015ff07006 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+0xe5f/0x1340 drivers/base/firmware_loader/main.c:783 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:826 reg_reload_regdb+0x81/0x200 net/wireless/reg.c:1083 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline] genl_rcv_msg+0xe76/0x1330 net/netlink/genetlink.c:654 netlink_rcv_skb+0x1f0/0x460 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+0x87c/0xa20 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x9a7/0xd40 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+0x13f/0x1b0 net/core/sock.c:2768 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+0x172/0x200 fs/splice.c:829 splice_direct_to_actor+0x496/0xb00 fs/splice.c:976 do_splice_direct+0x279/0x3d0 fs/splice.c:1064 do_sendfile+0x89d/0x1110 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+0x1ae/0x220 fs/read_write.c:1514 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff087b12c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000027980 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000100000001 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffc027b5a1f R14: 00007ff087b139c0 R15: 000000000118cf4c Modules linked in: ---[ end trace 2259919b3154dfe0 ]--- RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23 Code: 8f 09 99 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 82 d4 30 ff 0f 0b 48 c7 c7 da 08 99 84 4c 89 e6 4c 89 f1 31 c0 e8 6c d4 30 ff <0f> 0b 48 c7 c7 3d 09 99 84 4c 89 f6 4c 89 e1 31 c0 e8 56 d4 30 ff RSP: 0018:ffff888174bb6d48 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c787b788 RCX: 195622c1d3433000 RDX: ffffc900014d7000 RSI: 000000000000964e RDI: 000000000000964f RBP: ffff8881c787b780 R08: ffffffff812b99ce R09: ffffed103b725e00 R10: ffffed103b725e00 R11: 0000000000000000 R12: ffffffff84cb7210 R13: dffffc0000000000 R14: ffff8881c787b780 R15: ffff88817537c580 FS: 00007ff087b13700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbeeaa59db8 CR3: 000000015ff07003 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600