Re: [syzbot] RE: [syzbot] [rdma?] WARNING in gid_table_release_one (3)

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Subject: RE: [syzbot] [rdma?] WARNING in gid_table_release_one (3)
Author: edwards@nvidia.com



-----Original Message-----
From: syzbot <syzbot+b0da83a6c0e2e2bddbd4@syzkaller.appspotmail.com> 
Sent: Tuesday, May 13, 2025 2:35 PM
To: jgg@ziepe.ca; leon@kernel.org; linux-kernel@vger.kernel.org; linux-rdma@vger.kernel.org; syzkaller-bugs@googlegroups.com
Subject: [syzbot] [rdma?] WARNING in gid_table_release_one (3)

Hello,

syzbot found the following issue on:

HEAD commit:    c32f8dc5aaf9 Merge branch 'for-next/core' into for-kernelci
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=10789768580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ea4635ffd6ad5b4a
dashboard link: https://syzkaller.appspot.com/bug?extid=b0da83a6c0e2e2bddbd4
compiler:       Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15a08cf4580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/b921498959d4/disk-c32f8dc5.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/04e6ad946c4b/vmlinux-c32f8dc5.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d4f0d8db50ee/Image-c32f8dc5.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b0da83a6c0e2e2bddbd4@syzkaller.appspotmail.com

--
------------[ cut here ]------------
GID entry ref leak for dev syz1 index 2 ref=573
WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline]
WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886
Modules linked in:
CPU: 1 UID: 0 PID: 655 Comm: kworker/u8:10 Not tainted 6.15.0-rc5-syzkaller-gc32f8dc5aaf9 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: ib-unreg-wq ib_unregister_work
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : release_gid_table drivers/infiniband/core/cache.c:806 [inline] pc : gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886
lr : release_gid_table drivers/infiniband/core/cache.c:806 [inline] lr : gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886
sp : ffff80009c927860
x29: ffff80009c9278b0 x28: ffff0000d2b52f00 x27: ffff0000d77ee8d8
x26: ffff0000d77ee800 x25: 0000000000000010 x24: 0000000000000001
x23: ffff800092818000 x22: dfff800000000000 x21: 0000000000000003
x20: 1fffe0001aefdd1b x19: 1fffe0001aefdd00 x18: 00000000ffffffff
x17: 0000000000000000 x16: ffff80008adb410c x15: 0000000000000001
x14: 1fffe000338716e2 x13: 0000000000000000 x12: 0000000000000000
x11: ffff6000338716e3 x10: 0000000000ff0100 x9 : 1b90c18326689500
x8 : 1b90c18326689500 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009c9271b8 x4 : ffff80008f405b40 x3 : ffff8000807b1330
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace:
 release_gid_table drivers/infiniband/core/cache.c:806 [inline] (P)  gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886 (P)
 ib_cache_release_one+0x144/0x174 drivers/infiniband/core/cache.c:1636
 ib_device_release+0xc4/0x194 drivers/infiniband/core/device.c:482
 device_release+0x8c/0x1ac drivers/base/core.c:-1  kobject_cleanup lib/kobject.c:689 [inline]  kobject_release lib/kobject.c:720 [inline]  kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2b0/0x438 lib/kobject.c:737
 put_device+0x28/0x40 drivers/base/core.c:3800
 ib_unregister_work+0x28/0x38 drivers/infiniband/core/device.c:1629
 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238  process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400  kthread+0x5fc/0x75c kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 irq event stamp: 1499918 hardirqs last  enabled at (1499917): [<ffff80008054cc08>] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last  enabled at (1499917): [<ffff80008054cc08>] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (1499918): [<ffff80008adaf5e0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511
softirqs last  enabled at (1496318): [<ffff8000803cbf1c>] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last  enabled at (1496318): [<ffff8000803cbf1c>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (1496303): [<ffff800080020efc>] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50


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