WARNING in svc_destroy

Status: upstream: reported C repro on 2026/07/27 20:31
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+1c6b5b08237026b4cbae@syzkaller.appspotmail.com
First crash: 98d, last: 5h34m
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2026/08/08 linux-6.6.y (ToT) 6436c12a2ced C [report] WARNING in svc_destroy
2026/08/08 upstream (ToT) a59f57e2aa12 C Didn't crash

Sample crash report:
------------[ cut here ]------------
SVC: permsocks remain for nfsd
WARNING: CPU: 1 PID: 5995 at net/sunrpc/svc.c:645 svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:644
Modules linked in:
CPU: 1 PID: 5995 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:644
Code: 24 49 83 c7 20 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 22 c3 2c f8 49 8b 37 48 c7 c7 20 12 fa 8b e8 13 5f 9d f7 <0f> 0b e9 78 fd ff ff e8 57 ba d3 f7 c6 05 7f 23 c4 05 01 4c 89 e0
RSP: 0018:ffffc900048dfae0 EFLAGS: 00010246
RAX: 989a666b148a0f00 RBX: ffff888060352450 RCX: ffff88807eb85a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc900048dfcb8 R08: ffff8880b8d28c53 R09: 1ffff110171a518a
R10: dffffc0000000000 R11: ffffed10171a518b R12: ffff888060352400
R13: dffffc0000000000 R14: ffff888060352450 R15: ffffffff8e3e1d40
FS:  0000555587bb0500(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f94d7c71220 CR3: 0000000075dff000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:124 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:765 [inline]
 __write_ports fs/nfsd/nfsctl.c:791 [inline]
 write_ports+0xb99/0xfa0 fs/nfsd/nfsctl.c:844
 nfsctl_transaction_write+0x10c/0x150 fs/nfsd/nfsctl.c:113
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f94d7d9f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc905bb9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f94d8025fa0 RCX: 00007f94d7d9f559
RDX: 0000000000000005 RSI: 0000200000000340 RDI: 0000000000000003
RBP: 00007f94d7e36b50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f94d8025fac R14: 00007f94d8025fa0 R15: 00007f94d8025fa0
 </TASK>

Crashes (442):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/11/01 20:25 linux-6.6.y b5a1dc3ad482 25a0ae84 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/27 07:41 linux-6.6.y 0aebf2870d53 168cb7a2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/14 11:03 linux-6.6.y a91a6aa9253c 7321cd29 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/13 17:36 linux-6.6.y a91a6aa9253c 5a1eeac4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/11 16:38 linux-6.6.y a91a6aa9253c 4f92358f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/10 21:26 linux-6.6.y a91a6aa9253c 4f92358f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/10 20:35 linux-6.6.y a91a6aa9253c 4f92358f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/06 18:23 linux-6.6.y a91a6aa9253c f7710056 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/01 08:16 linux-6.6.y 79643295eba1 38f7f0d1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/28 19:36 linux-6.6.y 79643295eba1 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/28 17:09 linux-6.6.y 79643295eba1 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/28 15:21 linux-6.6.y 79643295eba1 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/28 13:16 linux-6.6.y 79643295eba1 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/28 13:12 linux-6.6.y 79643295eba1 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/26 19:34 linux-6.6.y 79643295eba1 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/19 09:57 linux-6.6.y 79643295eba1 853b104b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/19 03:35 linux-6.6.y 79643295eba1 853b104b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/19 00:05 linux-6.6.y 79643295eba1 853b104b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/15 12:42 linux-6.6.y 79643295eba1 81a27d1a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/15 12:19 linux-6.6.y 79643295eba1 81a27d1a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/15 08:01 linux-6.6.y 79643295eba1 81a27d1a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/11 02:33 linux-6.6.y 8b73de7da85f 1fe56c0a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/10 23:14 linux-6.6.y 8b73de7da85f 1fe56c0a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/08 02:44 linux-6.6.y 8b73de7da85f 680aa3e1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/05 20:13 linux-6.6.y 8b73de7da85f 4f7b22a0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/05 16:55 linux-6.6.y 8b73de7da85f 4f7b22a0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/27 09:13 linux-6.6.y dc6160265ffc a2b77b9e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/27 07:08 linux-6.6.y dc6160265ffc a2b77b9e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/27 05:11 linux-6.6.y dc6160265ffc a2b77b9e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/27 03:05 linux-6.6.y dc6160265ffc a2b77b9e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/27 01:47 linux-6.6.y dc6160265ffc a2b77b9e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/27 00:29 linux-6.6.y dc6160265ffc a2b77b9e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/22 19:01 linux-6.6.y c610b395b0a5 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/22 14:39 linux-6.6.y c610b395b0a5 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/21 18:59 linux-6.6.y c610b395b0a5 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/20 06:14 linux-6.6.y c610b395b0a5 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/19 01:56 linux-6.6.y d27334b2888c 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/16 13:48 linux-6.6.y d27334b2888c 746171ee .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/08 03:18 linux-6.6.y 6436c12a2ced e4ef95d6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/08 00:30 linux-6.6.y 6436c12a2ced e4ef95d6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/06 08:42 linux-6.6.y aa0e49877a2e cd5b1963 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/02 10:29 linux-6.6.y a1153c0deb44 e611ffe1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/08/31 14:42 linux-6.6.y a4a971135a2f 2f52988a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/11/02 21:26 linux-6.6.y b5a1dc3ad482 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/11/01 03:20 linux-6.6.y b5a1dc3ad482 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/31 06:45 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/31 04:55 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/30 23:04 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/30 00:51 linux-6.6.y 0aebf2870d53 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/30 00:51 linux-6.6.y 0aebf2870d53 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/29 15:21 linux-6.6.y 0aebf2870d53 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/28 19:33 linux-6.6.y 0aebf2870d53 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/28 18:33 linux-6.6.y 0aebf2870d53 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/28 10:01 linux-6.6.y 0aebf2870d53 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/28 00:53 linux-6.6.y 0aebf2870d53 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/28 00:53 linux-6.6.y 0aebf2870d53 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/27 08:50 linux-6.6.y 0aebf2870d53 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/27 05:01 linux-6.6.y 0aebf2870d53 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/26 08:52 linux-6.6.y 0aebf2870d53 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/25 04:01 linux-6.6.y 0aebf2870d53 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/20 14:29 linux-6.6.y cecd39af8a1a df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/19 22:55 linux-6.6.y cecd39af8a1a 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/19 19:33 linux-6.6.y cecd39af8a1a 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/19 17:51 linux-6.6.y cecd39af8a1a 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/17 22:56 linux-6.6.y cecd39af8a1a 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/17 19:53 linux-6.6.y cecd39af8a1a 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/16 23:19 linux-6.6.y cecd39af8a1a 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/16 19:36 linux-6.6.y cecd39af8a1a 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/14 20:59 linux-6.6.y a91a6aa9253c 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/14 14:48 linux-6.6.y a91a6aa9253c 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/14 09:13 linux-6.6.y a91a6aa9253c 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/09 01:57 linux-6.6.y a91a6aa9253c b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/08 20:09 linux-6.6.y a91a6aa9253c b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/08 14:24 linux-6.6.y a91a6aa9253c 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/08 08:20 linux-6.6.y a91a6aa9253c 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/10/07 07:46 linux-6.6.y a91a6aa9253c f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/29 11:29 linux-6.6.y 79643295eba1 7bf4ea23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/28 10:57 linux-6.6.y 79643295eba1 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/27 13:43 linux-6.6.y 79643295eba1 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/23 13:22 linux-6.6.y 79643295eba1 abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/23 05:10 linux-6.6.y 79643295eba1 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/23 05:08 linux-6.6.y 79643295eba1 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/22 15:45 linux-6.6.y 79643295eba1 e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/22 15:21 linux-6.6.y 79643295eba1 e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/09/22 14:22 linux-6.6.y 79643295eba1 e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
2026/07/27 20:30 linux-6.6.y c5596480c50e aae9036b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in svc_destroy
* Struck through repros no longer work on HEAD.