On Thu, 13 Mar 2025 17:24:21 +0800, Wang Liang wrote:
> Syzbot reported a slab-use-after-free with the following call trace:
>
> ==================================================================
> BUG: KASAN: slab-use-after-free in nla_put+0xd3/0x150 lib/nlattr.c:1099
> Read of size 5 at addr ffff888140ea1c60 by task syz.0.988/10025
>
> CPU: 0 UID: 0 PID: 10025 Comm: syz.0.988
> Not tainted 6.14.0-rc4-syzkaller-00859-gf77f12010f67 #0
> Hardware name: Google Compute Engine, BIOS Google 02/12/2025
> Call Trace:
> <TASK>
> __dump_stack lib/dump_stack.c:94 [inline]
> dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
> print_address_description mm/kasan/report.c:408 [inline]
> print_report+0x16e/0x5b0 mm/kasan/report.c:521
> kasan_report+0x143/0x180 mm/kasan/report.c:634
> kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
> __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105
> nla_put+0xd3/0x150 lib/nlattr.c:1099
> nla_put_string include/net/netlink.h:1621 [inline]
> fill_nldev_handle+0x16e/0x200 drivers/infiniband/core/nldev.c:265
> rdma_nl_notify_event+0x561/0xef0 drivers/infiniband/core/nldev.c:2857
> ib_device_notify_register+0x22/0x230 drivers/infiniband/core/device.c:1344
> ib_register_device+0x1292/0x1460 drivers/infiniband/core/device.c:1460
> rxe_register_device+0x233/0x350 drivers/infiniband/sw/rxe/rxe_verbs.c:1540
> rxe_net_add+0x74/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:550
> rxe_newlink+0xde/0x1a0 drivers/infiniband/sw/rxe/rxe.c:212
> nldev_newlink+0x5ea/0x680 drivers/infiniband/core/nldev.c:1795
> rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
> rdma_nl_rcv+0x6dd/0x9e0 drivers/infiniband/core/netlink.c:259
> netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
> netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1339
> netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1883
> sock_sendmsg_nosec net/socket.c:709 [inline]
> __sock_sendmsg+0x221/0x270 net/socket.c:724
> ____sys_sendmsg+0x53a/0x860 net/socket.c:2564
> ___sys_sendmsg net/socket.c:2618 [inline]
> __sys_sendmsg+0x269/0x350 net/socket.c:2650
> do_syscall_x64 arch/x86/entry/common.c:52 [inline]
> do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> RIP: 0033:0x7f42d1b8d169
> Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 ...
> RSP: 002b:00007f42d2960038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
> RAX: ffffffffffffffda RBX: 00007f42d1da6320 RCX: 00007f42d1b8d169
> RDX: 0000000000000000 RSI: 00004000000002c0 RDI: 000000000000000c
> RBP: 00007f42d1c0e2a0 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000000 R14: 00007f42d1da6320 R15: 00007ffe399344a8
> </TASK>
>
> [...]
Applied, thanks!
[1/1] infiniband: fix use-after-free when rename device name
https://git.kernel.org/rdma/rdma/c/40731619b3e706
Best regards,
--
Leon Romanovsky <leon@xxxxxxxxxx>
