From: syzbot ci <syzbot+ciba837a74ccbd374c@syzkaller.appspotmail.com>
To: a.hindborg@kernel.org, brauner@kernel.org, hare@kernel.org,
hch@lst.de, jack@suse.cz, kch@nvidia.com, leitao@debian.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-nvme@lists.infradead.org, sagi@grimberg.me,
viro@zeniv.linux.org.uk
Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com
Subject: [syzbot ci] Re: namespace-aware configfs
Date: Tue, 23 Jun 2026 07:37:24 -0700 [thread overview]
Message-ID: <6a3a9a24.ac26f6c2.9a9c4.0005.GAE@google.com> (raw)
In-Reply-To: <20260623-configfs-ns-v3-0-841c100fd5dd@kernel.org>
syzbot ci has tested the following series
[v3] namespace-aware configfs
https://lore.kernel.org/all/20260623-configfs-ns-v3-0-841c100fd5dd@kernel.org
* [PATCH RFC v3 01/12] fs/configfs: rework configfs_is_root()
* [PATCH RFC v3 02/12] fs/configfs: dynamically allocate super_info
* [PATCH RFC v3 03/12] fs/configfs: separate out configfs_{link,unlink}_root()
* [PATCH RFC v3 04/12] fs/configfs: add superblock as attribute to configfs_pin_fs()
* [PATCH RFC v3 05/12] fs/configfs: add 'fill_subsystem' and 'clear_subsystem' callbacks
* [PATCH RFC v3 06/12] fs/namespace: implement mnt_clone_direct()
* [PATCH RFC v3 07/12] fs/configfs: switch to get_tree_keyed()
* [PATCH RFC v3 08/12] fs/configfs: open-code simple_pin_fs()
* [PATCH RFC v3 09/12] nvmet: make discovery subsystem dynamic
* [PATCH RFC v3 10/12] nvmet: per net-namespace port list
* [PATCH RFC v3 11/12] nvmet: make configfs setup namespace aware
* [PATCH RFC v3 12/12] nvmet: enable transports for net namespaces
and found the following issue:
BUG: sleeping function called from invalid context in configfs_get_super_info
Full report is available here:
https://ci.syzbot.org/series/f460be5a-d520-4bc1-9cfb-6492f841629b
***
BUG: sleeping function called from invalid context in configfs_get_super_info
tree: bpf-next
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next.git
base: 66affa37cfac0aec061cc4bcf4a065b0c52f7e19
arch: amd64
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
config: https://ci.syzbot.org/builds/73803fa0-5ba4-4d03-976f-f9962ee982c8/config
syz repro: https://ci.syzbot.org/findings/4102267c-e678-4ffc-9ac0-4fb2dcbe5c0d/syz_repro
BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5856, name: syz.0.17
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5856 Comm: syz.0.17 Tainted: G W syzkaller #0 PREEMPT(full)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
__might_resched+0x378/0x4d0 kernel/sched/core.c:9193
might_alloc include/linux/sched/mm.h:323 [inline]
slab_pre_alloc_hook mm/slub.c:4559 [inline]
slab_alloc_node mm/slub.c:4916 [inline]
__kmalloc_cache_noprof+0x74/0x660 mm/slub.c:5446
_kmalloc_noprof include/linux/slab.h:969 [inline]
_kzalloc_noprof include/linux/slab.h:1286 [inline]
configfs_get_super_info+0x218/0x5e0 fs/configfs/mount.c:91
configfs_get_tree+0x41/0xd0 fs/configfs/mount.c:170
vfs_get_tree+0x92/0x2a0 fs/super.c:1694
vfs_cmd_create+0xa2/0x200 fs/fsopen.c:231
__do_sys_fsconfig fs/fsopen.c:463 [inline]
__se_sys_fsconfig+0x6b9/0x810 fs/fsopen.c:350
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5c9db9ce59
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:00007f5c9ea71028 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f5c9de15fa0 RCX: 00007f5c9db9ce59
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007f5c9dc32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5c9de16038 R14: 00007f5c9de15fa0 R15: 00007ffe63465d98
</TASK>
***
If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com
---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.
To test a patch for this bug, please reply with `#syz test`
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next prev parent reply other threads:[~2026-06-23 14:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-23 9:15 [PATCH RFC v3 00/12] " Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 01/12] fs/configfs: rework configfs_is_root() Hannes Reinecke
2026-06-23 12:50 ` Breno Leitao
2026-06-23 9:15 ` [PATCH RFC v3 02/12] fs/configfs: dynamically allocate super_info Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 03/12] fs/configfs: separate out configfs_{link,unlink}_root() Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 04/12] fs/configfs: add superblock as attribute to configfs_pin_fs() Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 05/12] fs/configfs: add 'fill_subsystem' and 'clear_subsystem' callbacks Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 06/12] fs/namespace: implement mnt_clone_direct() Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 07/12] fs/configfs: switch to get_tree_keyed() Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 08/12] fs/configfs: open-code simple_pin_fs() Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 09/12] nvmet: make discovery subsystem dynamic Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 10/12] nvmet: per net-namespace port list Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 11/12] nvmet: make configfs setup namespace aware Hannes Reinecke
2026-06-23 9:15 ` [PATCH RFC v3 12/12] nvmet: enable transports for net namespaces Hannes Reinecke
2026-06-23 14:37 ` syzbot ci [this message]
-- strict thread matches above, loose matches on Subject: below --
2026-06-19 8:36 [PATCH RFC v2 00/12] namespace-aware configfs hare
2026-06-19 13:25 ` [syzbot ci] " syzbot ci
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