memory leak in rtl8150_set_multicast

Status: fixed on 2026/01/26 05:07
Subsystems: net usb
[Documentation on labels]
Reported-by: syzbot+8dd915c7cb0490fc8c52@syzkaller.appspotmail.com
Fix commit: 12cab1191d98 net: usb: rtl8150: fix memory leak on usb_submit_urb() failure
First crash: 235d, last: 235d
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] [net?] [usb?] memory leak in rtl8150_set_multicast 1 (3) 2025/12/16 23:42
[PATCH] net: usb: rtl8150: fix memory leak on usb_submit_urb() failure 2 (2) 2025/12/16 16:42
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/12/16 23:42 5m rakagunarto@gmail.com patch upstream error

Sample crash report:
BUG: memory leak
unreferenced object 0xffff888127d51010 (size 16):
  comm "dhcpcd", pid 5479, jiffies 4294951443
  hex dump (first 16 bytes):
    40 05 30 01 00 00 02 00 9e 00 00 00 00 00 00 00  @.0.............
  backtrace (crc 5546a3be):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4958 [inline]
    slab_alloc_node mm/slub.c:5263 [inline]
    __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771
    kmalloc_noprof include/linux/slab.h:957 [inline]
    async_set_registers drivers/net/usb/rtl8150.c:192 [inline]
    rtl8150_set_multicast+0x7a/0x1c0 drivers/net/usb/rtl8150.c:679
    __dev_set_rx_mode+0xc5/0x120 net/core/dev.c:9655
    dev_set_rx_mode net/core/dev.c:9661 [inline]
    __dev_open+0x23f/0x3c0 net/core/dev.c:1691
    __dev_change_flags+0x30c/0x380 net/core/dev.c:9734
    netif_change_flags+0x35/0x90 net/core/dev.c:9797
    dev_change_flags+0x64/0xf0 net/core/dev_api.c:68
    devinet_ioctl+0x5bf/0xd30 net/ipv4/devinet.c:1199
    inet_ioctl+0x27c/0x2b0 net/ipv4/af_inet.c:1009
    sock_do_ioctl+0x84/0x1a0 net/socket.c:1254
    sock_ioctl+0x149/0x480 net/socket.c:1375
    vfs_ioctl fs/ioctl.c:51 [inline]
    __do_sys_ioctl fs/ioctl.c:597 [inline]
    __se_sys_ioctl fs/ioctl.c:583 [inline]
    __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff8881282bae40 (size 192):
  comm "dhcpcd", pid 5479, jiffies 4294951443
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 58 ae 2b 28 81 88 ff ff  ........X.+(....
  backtrace (crc d110b1b3):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4958 [inline]
    slab_alloc_node mm/slub.c:5263 [inline]
    __do_kmalloc_node mm/slub.c:5656 [inline]
    __kmalloc_noprof+0x3e0/0x660 mm/slub.c:5669
    kmalloc_noprof include/linux/slab.h:961 [inline]
    usb_alloc_urb+0x66/0xa0 drivers/usb/core/urb.c:75
    async_set_registers drivers/net/usb/rtl8150.c:195 [inline]
    rtl8150_set_multicast+0x97/0x1c0 drivers/net/usb/rtl8150.c:679
    __dev_set_rx_mode+0xc5/0x120 net/core/dev.c:9655
    dev_set_rx_mode net/core/dev.c:9661 [inline]
    __dev_open+0x23f/0x3c0 net/core/dev.c:1691
    __dev_change_flags+0x30c/0x380 net/core/dev.c:9734
    netif_change_flags+0x35/0x90 net/core/dev.c:9797
    dev_change_flags+0x64/0xf0 net/core/dev_api.c:68
    devinet_ioctl+0x5bf/0xd30 net/ipv4/devinet.c:1199
    inet_ioctl+0x27c/0x2b0 net/ipv4/af_inet.c:1009
    sock_do_ioctl+0x84/0x1a0 net/socket.c:1254
    sock_ioctl+0x149/0x480 net/socket.c:1375
    vfs_ioctl fs/ioctl.c:51 [inline]
    __do_sys_ioctl fs/ioctl.c:597 [inline]
    __se_sys_ioctl fs/ioctl.c:583 [inline]
    __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/12 09:57 upstream d358e5254674 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in rtl8150_set_multicast
* Struck through repros no longer work on HEAD.