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Message-ID: <20240904082918.GL4026@unreal> Date: Wed, 4 Sep 2024 11:29:18 +0300 From: Leon Romanovsky <leon@...nel.org> To: syzbot <syzbot+b8b7a6774bf40cf8296b@...kaller.appspotmail.com> Cc: jgg@...pe.ca, linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org, netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] [rdma?] WARNING in gid_table_release_one (2) #syz fix: "IB/core: Fix ib_cache_setup_one error flow cleanup" On Sun, Sep 01, 2024 at 08:46:22PM -0700, syzbot wrote: > 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: syzbot+b8b7a6774bf40cf8296b@...kaller.appspotmail.com > > 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 > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@...glegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup
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