FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=00000000159c4875 [p=0000000000e8ee1b fl=2 nc=0 na=1] ------------[ cut here ]------------ FS-Cache: N-cookie d=00000000b3fb679b n=00000000eb98de36 kernel BUG at lib/list_debug.c:23! FS-Cache: N-key=[16] '02000000000000000200040072720000' invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7556 Comm: syz-executor.1 Not tainted 4.19.205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid.cold+0xf/0x3c lib/list_debug.c:23 Code: fb e8 d6 50 66 f9 48 c7 c7 40 dd b3 88 49 83 cc ff e8 ec 42 f7 ff e9 bd 72 7a fb 4c 89 e1 48 c7 c7 60 e1 b3 88 e8 d8 42 f7 ff <0f> 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 a0 e2 b3 88 e8 c1 42 f7 RSP: 0018:ffff888225b6f448 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffff888000126080 RCX: 0000000000000000 RDX: 0000000000000022 RSI: ffffffff814e0d61 RDI: ffffed1044b6de7b RBP: ffff888000126138 R08: 0000000000000075 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff888000126138 R13: 0000000000000010 R14: ffff888000126138 R15: ffff888000126138 FS: 00007fa094c7f700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb980dc1000 CR3: 00000000a0361000 CR4: 00000000001426e0 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] xprt_alloc+0x45d/0x720 net/sunrpc/xprt.c:1261 xs_setup_xprt.part.0+0x4f/0x2b0 net/sunrpc/xprtsock.c:2900 xs_setup_xprt net/sunrpc/xprtsock.c:3072 [inline] xs_setup_udp+0x9e/0x860 net/sunrpc/xprtsock.c:3016 xprt_create_transport+0xf9/0x4b0 net/sunrpc/xprt.c:1485 rpc_create+0x288/0x540 net/sunrpc/clnt.c:573 nfs_create_rpc_client+0x36f/0x440 fs/nfs/client.c:529 nfs_init_client fs/nfs/client.c:640 [inline] nfs_init_client+0x6d/0x100 fs/nfs/client.c:627 nfs_get_client+0xedb/0x1310 fs/nfs/client.c:431 nfs_init_server+0x249/0xe10 fs/nfs/client.c:676 nfs_create_server+0x7a/0x4f0 fs/nfs/client.c:960 nfs_try_mount+0x141/0x880 fs/nfs/super.c:1884 nfs_fs_mount+0x171f/0x2e90 fs/nfs/super.c:2701 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665f9 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:00007fa094c7f188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 000000002015bffc RSI: 0000000020000240 RDI: 0000000000000000 RBP: 00000000004bfcc4 R08: 0000000020000000 R09: 0000000000000000 R10: 0000000054000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc8c73fdcf R14: 00007fa094c7f300 R15: 0000000000022000 Modules linked in: FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=00000000e3cae26f [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=00000000bf165812 FS-Cache: N-key=[16] '02000000000000000200040072720000' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=000000006d558d15 [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=000000005f5202fd FS-Cache: N-key=[16] '02000000000000000200040072720000' ---[ end trace f845c1e532bb78e0 ]--- RIP: 0010:__list_add_valid.cold+0xf/0x3c lib/list_debug.c:23 Code: fb e8 d6 50 66 f9 48 c7 c7 40 dd b3 88 49 83 cc ff e8 ec 42 f7 ff e9 bd 72 7a fb 4c 89 e1 48 c7 c7 60 e1 b3 88 e8 d8 42 f7 ff <0f> 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 a0 e2 b3 88 e8 c1 42 f7 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=00000000f46d9353 [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=0000000084de36c7 FS-Cache: N-key=[16] '02000000000000000200040072720000' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=00000000fed09ca1 [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=00000000b6458c95 FS-Cache: N-key=[16] '02000000000000000200040072720000' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=0000000092b7d449 [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=00000000eb7a8c1d FS-Cache: N-key=[16] '02000000000000000200040072720000' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=000000005659048b [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=00000000c6f95835 FS-Cache: N-key=[16] '02000000000000000200040072720000' RSP: 0018:ffff888225b6f448 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffff888000126080 RCX: 0000000000000000 RDX: 0000000000000022 RSI: ffffffff814e0d61 RDI: ffffed1044b6de7b RBP: ffff888000126138 R08: 0000000000000075 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff888000126138 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e R13: 0000000000000010 R14: ffff888000126138 R15: ffff888000126138 FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=0000000054e59645 [p=0000000000e8ee1b fl=2 nc=0 na=1] FS-Cache: N-cookie d=00000000b3fb679b n=000000001a091636 FS-Cache: N-key=[16] '02000000000000000200040072720000' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000b7ea0ded [p=0000000000e8ee1b fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000b3fb679b n=00000000e3918a0e FS-Cache: O-key=[16] '02000000000000000200040072720000' FS-Cache: N-cookie c=000000005adb7aa4 [p=0000000000e8ee1b fl=2 nc=0 na=1] FS: 00007fa094c7f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 FS-Cache: N-cookie d=00000000b3fb679b n=00000000a6ad24c0 FS-Cache: N-key=[16] '02000000000000000200040072720000' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcbce34ff8 CR3: 00000000a0361000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400