syzbot


WARNING in remove_proc_entry (7)

Status: fixed on 2025/06/10 16:19
Subsystems: nfs
[Documentation on labels]
Reported-by: syzbot+e34ad04f27991521104c@syzkaller.appspotmail.com
Fix commit: 930b64ca0c51 nfsd: don't ignore the return code of svc_proc_register()
First crash: 137d, last: 13d
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] [nfs?] [net?] WARNING in remove_proc_entry (7) 2 (3) 2025/02/07 03:47
[PATCH] nfsd: don't ignore the return code of svc_proc_register() 5 (5) 2025/02/06 18:41
Similar bugs (10)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in remove_proc_entry origin:upstream C inconclusive 229 249d 283d 0/3 auto-obsoleted due to no activity on 2024/12/25 11:45
upstream WARNING in remove_proc_entry (8) net nfs syz 51 2h28m 10d 0/29 upstream: reported syz repro on 2025/06/12 21:08
linux-6.1 WARNING in remove_proc_entry 145 249d 283d 0/3 auto-obsoleted due to no activity on 2024/12/25 12:24
upstream WARNING in remove_proc_entry (5) scsi C 158 828d 870d 22/29 fixed on 2023/06/08 14:41
upstream WARNING in remove_proc_entry (4) net 1 1301d 1301d 0/29 closed as invalid on 2021/12/14 20:02
linux-4.19 WARNING in remove_proc_entry C error 4 947d 969d 0/1 upstream: reported C repro on 2022/10/28 02:13
upstream WARNING in remove_proc_entry netfilter 1 2526d 2526d 0/29 closed as invalid on 2018/09/05 12:51
upstream WARNING in remove_proc_entry (3) nfs net 1 1440d 1436d 0/29 auto-closed as invalid on 2021/11/10 16:53
upstream WARNING in remove_proc_entry (2) net 6 2105d 2405d 0/29 auto-closed as invalid on 2020/01/15 15:54
upstream WARNING in remove_proc_entry (6) can C done 377 262d 291d 28/29 fixed on 2024/10/22 11:57

Sample crash report:
------------[ cut here ]------------
remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'nfs'
WARNING: CPU: 0 PID: 6032 at fs/proc/generic.c:727 remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727
Modules linked in:

CPU: 0 UID: 0 PID: 6032 Comm: syz.0.16 Not tainted 6.15.0-rc4-syzkaller-00052-g4f79eaa2ceac #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:remove_proc_entry+0x45e/0x530 fs/proc/generic.c:727
Code: 3c 02 00 0f 85 85 00 00 00 48 8b 93 d8 00 00 00 4d 89 f0 4c 89 e9 48 c7 c6 c0 6b a2 8b 48 c7 c7 e0 6a a2 8b e8 83 f7 1f ff 90 <0f> 0b 90 90 e9 5f fe ff ff e8 64 16 60 ff 90 48 b8 00 00 00 00 00
RSP: 0018:ffffc900031a7b70 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88807f98a780 RCX: ffffffff817a8f78
RDX: ffff8880269d5a00 RSI: ffffffff817a8f85 RDI: 0000000000000001
RBP: ffff88807d761480 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807d7613c0
R13: ffff88807d7614a4 R14: ffff88807d761c24 R15: dffffc0000000000
FS:  00007f2d555c96c0(0000) GS:ffff8881249ed000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f67837ddd58 CR3: 0000000079178000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sunrpc_exit_net+0x46/0x90 net/sunrpc/sunrpc_syms.c:76
 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:172
 setup_net+0x4e8/0x850 net/core/net_namespace.c:396
 copy_net_ns+0x2a6/0x5f0 net/core/net_namespace.c:518
 create_new_namespaces+0x3ea/0xad0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
 ksys_unshare+0x45b/0xa40 kernel/fork.c:3375
 __do_sys_unshare kernel/fork.c:3446 [inline]
 __se_sys_unshare kernel/fork.c:3444 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3444
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d5478e969
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2d555c9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f2d549b6080 RCX: 00007f2d5478e969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000080
RBP: 00007f2d54810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2d549b6080 R15: 00007fff2084ba88
 </TASK>

Crashes (682):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/01 17:49 upstream 4f79eaa2ceac 51b137cd .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/03/20 21:55 upstream 5fc319360819 62330552 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/11 05:31 upstream febbc555cf0f 43f51a00 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/10 03:08 upstream 69b54314c975 ef44b750 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/09 01:30 upstream 8f6629c004b1 ef44b750 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/07 21:33 upstream bb066fe812d6 a4f327c2 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/07 16:13 upstream bb066fe812d6 a4f327c2 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/07 15:35 upstream bb066fe812d6 a4f327c2 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/07 15:02 upstream bb066fe812d6 a4f327c2 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/07 07:56 upstream bb066fe812d6 53657d1b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/07 06:25 upstream bb066fe812d6 53657d1b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/06 11:40 upstream 92514ef226f5 1e1faf27 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/06 09:06 upstream 92514ef226f5 577d049b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/02/06 08:22 upstream 92514ef226f5 577d049b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/09 22:47 upstream 19272b37aa4f 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/09 13:11 upstream 19272b37aa4f 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/09 13:08 upstream 19272b37aa4f 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/08 15:37 upstream 8630c59e9936 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/08 05:04 upstream 8630c59e9936 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/07 14:05 upstream bdc7f8c5adad 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/07 10:54 upstream bdc7f8c5adad 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/07 07:48 upstream c0c9379f235d 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/06 22:52 upstream c0c9379f235d 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/06 16:23 upstream e271ed52b344 3d899f2c .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/06 06:37 upstream e271ed52b344 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/06 06:34 upstream e271ed52b344 6b6b5f21 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/04 16:03 upstream 5abc7438f1e9 e565f08d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/03 18:18 upstream 546b1c9e93c2 a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/03 08:36 upstream 7f9039c524a3 a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/06/02 03:43 upstream cd2e103d57e5 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/31 17:04 upstream 0f70f5b08a47 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/31 15:23 upstream 0f70f5b08a47 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/31 06:32 upstream 8477ab143069 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/29 12:58 upstream 90b83efa6701 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/28 19:50 upstream feacb1774bd5 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/28 02:23 upstream 914873bc7df9 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/27 23:10 upstream 914873bc7df9 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/26 14:08 upstream 0ff41df1cb26 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/26 06:46 upstream 0f8c0258bf04 2d4582d0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/26 05:44 upstream 0f8c0258bf04 2d4582d0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/22 13:56 upstream d608703fcdd9 0919b50b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/19 16:43 upstream a5806cd506af 8f9cf946 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/19 05:20 upstream a5806cd506af f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/19 03:09 upstream a5806cd506af f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/19 01:10 upstream a5806cd506af f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/19 01:05 upstream a5806cd506af f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/18 23:33 upstream a5806cd506af f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/18 05:19 upstream 5723cc3450bc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/16 19:23 upstream 3c21441eeffc f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/16 17:38 upstream fee3e843b309 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/16 09:31 upstream fee3e843b309 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/15 11:42 upstream c94d59a126cb d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/15 03:39 upstream c94d59a126cb d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/13 10:51 upstream e9565e23cd89 9497799b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/13 10:50 upstream e9565e23cd89 9497799b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/13 06:05 upstream 627277ba7c23 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
2025/05/12 22:36 upstream 627277ba7c23 f6671af7 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in remove_proc_entry
* Struck through repros no longer work on HEAD.