memory leak in es58x

Title	Replies (including bot)	Last reply
[PATCH] can: etas_es58x: fix memory leak in es58x_open()	5 (5)	2025/12/24 12:02
[syzbot] [usb?] memory leak in es58x_open	0 (1)	2025/12/22 05:27
Created	Duration	User	Patch	Repo	Result
2026/01/01 21:06	15m	retest repro		upstream	report log
BUG: memory leak
unreferenced object 0xffff88812623e000 (size 512):
  comm "dhcpcd", pid 5478, jiffies 4294946142
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 0):
    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]
    hcd_buffer_alloc+0x151/0x190 drivers/usb/core/buffer.c:134
    usb_alloc_coherent+0x44/0x70 drivers/usb/core/usb.c:1010
    es58x_alloc_urb+0x4c/0xc0 drivers/net/can/usb/etas_es58x/es58x_core.c:1553
    es58x_alloc_rx_urbs drivers/net/can/usb/etas_es58x/es58x_core.c:1711 [inline]
    es58x_open+0x1b3/0x470 drivers/net/can/usb/etas_es58x/es58x_core.c:1785
    __dev_open+0x1be/0x3c0 net/core/dev.c:1683
    __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 0xffff888126112200 (size 512):
  comm "dhcpcd", pid 5478, jiffies 4294946373
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 0):
    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]
    hcd_buffer_alloc+0x151/0x190 drivers/usb/core/buffer.c:134
    usb_alloc_coherent+0x44/0x70 drivers/usb/core/usb.c:1010
    es58x_alloc_urb+0x4c/0xc0 drivers/net/can/usb/etas_es58x/es58x_core.c:1553
    es58x_alloc_rx_urbs drivers/net/can/usb/etas_es58x/es58x_core.c:1711 [inline]
    es58x_open+0x1b3/0x470 drivers/net/can/usb/etas_es58x/es58x_core.c:1785
    __dev_open+0x1be/0x3c0 net/core/dev.c:1683
    __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 0xffff888126188800 (size 512):
  comm "dhcpcd", pid 5478, jiffies 4294946404
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 0):
    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]
    hcd_buffer_alloc+0x151/0x190 drivers/usb/core/buffer.c:134
    usb_alloc_coherent+0x44/0x70 drivers/usb/core/usb.c:1010
    es58x_alloc_urb+0x4c/0xc0 drivers/net/can/usb/etas_es58x/es58x_core.c:1553
    es58x_alloc_rx_urbs drivers/net/can/usb/etas_es58x/es58x_core.c:1711 [inline]
    es58x_open+0x1b3/0x470 drivers/net/can/usb/etas_es58x/es58x_core.c:1785
    __dev_open+0x1be/0x3c0 net/core/dev.c:1683
    __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