Subject: [syzbot] [rdma?] WARNING in gid_table_release_one (2)

From: syzbot <[email-masked]>
Date: Sun, 01 Sep 2024 20:46:22 -0700

Hello,

syzbot found the following issue on:

HEAD commit:    928f79a188aa Merge tag 'loongarch-fixes-6.11-2' of git://g..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14089643980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9e8c6a00ef394bcf
dashboard link: https://syzkaller.appspot.com/bug?extid=b8b7a6774bf40cf8296b
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-928f79a1.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5bf719d3bbf5/vmlinux-928f79a1.xz
kernel image: https://storage.googleapis.com/syzbot-assets/88527595ba7c/bzImage-928f79a1.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email-masked]

infiniband syz1: ib_query_port failed (-19)
infiniband syz1: Couldn't set up InfiniBand P_Key/GID cache
------------[ cut here ]------------
GID entry ref leak for dev syz1 index 0 ref=1
WARNING: CPU: 0 PID: 19837 at drivers/infiniband/core/cache.c:806 release_gid_table drivers/infiniband/core/cache.c:806 [inline]
WARNING: CPU: 0 PID: 19837 at drivers/infiniband/core/cache.c:806 gid_table_release_one+0x387/0x4b0 drivers/infiniband/core/cache.c:886
Modules linked in:
CPU: 0 UID: 0 PID: 19837 Comm: syz.1.3934 Not tainted 6.11.0-rc5-syzkaller-00079-g928f79a188aa #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:release_gid_table drivers/infiniband/core/cache.c:806 [inline]
RIP: 0010:gid_table_release_one+0x387/0x4b0 drivers/infiniband/core/cache.c:886
Code: 78 07 00 00 48 85 f6 74 2a 48 89 74 24 38 e8 b0 0a 76 f9 48 8b 74 24 38 44 89 f9 89 da 48 c7 c7 c0 69 51 8c e8 5a c3 38 f9 90 <0f> 0b 90 90 e9 6f fe ff ff e8 8b 0a 76 f9 49 8d bc 24 28 07 00 00
RSP: 0018:ffffc900042b7080 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9002811e000
RDX: 0000000000040000 RSI: ffffffff814dd406 RDI: 0000000000000001
RBP: ffff88807ebaaf00 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888051860000
R13: dffffc0000000000 R14: ffffed100fd755fb R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000f56c6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002effcff8 CR3: 0000000060c5e000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ib_device_release+0xef/0x1e0 drivers/infiniband/core/device.c:498
 device_release+0xa1/0x240 drivers/base/core.c:2582
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e4/0x5a0 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3790
 rxe_net_add+0xe0/0x110 drivers/infiniband/sw/rxe/rxe_net.c:544
 rxe_newlink+0x70/0x190 drivers/infiniband/sw/rxe/rxe.c:197
 nldev_newlink+0x373/0x5e0 drivers/infiniband/core/nldev.c:1794
 rdma_nl_rcv_msg+0x388/0x6e0 drivers/infiniband/core/netlink.c:195
 rdma_nl_rcv_skb.constprop.0.isra.0+0x2e6/0x450 drivers/infiniband/core/netlink.c:239
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x9b4/0xb50 net/socket.c:2597
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2651
 __sys_sendmsg+0x117/0x1f0 net/socket.c:2680
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f20579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f56c656c EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00000000200003c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi

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