[syzbot] [input?] [usb?] memory leak in __usbhid_submit_report (2)

[syzbot] [input?] [usb?] memory leak in __usbhid_submit_report (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    2f1baf1fc892 Merge tag 'trace-v7.2-rc7' of git://git.kerne..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14e2ca25580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=11ad91fcc8fa7933
dashboard link: https://syzkaller.appspot.com/bug?extid=e2c057ea576d2644e2be
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14c6a949580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17f43279580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3bba3e686406/disk-2f1baf1f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b8b74261d93c/vmlinux-2f1baf1f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/952847c3fd89/bzImage-2f1baf1f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e2c057ea576d2644e2be@syzkaller.appspotmail.com

BUG: memory leak
unreferenced object 0xffff8881279df600 (size 16):
  comm "syz.5.22", pid 6103, jiffies 4294942311
  hex dump (first 16 bytes):
    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:4597 [inline]
    slab_alloc_node mm/slub.c:4917 [inline]
    __do_kmalloc_node mm/slub.c:5333 [inline]
    __kmalloc_noprof+0x3bf/0x550 mm/slub.c:5359
    __usbhid_submit_report+0x362/0x4c0 drivers/hid/usbhid/hid-core.c:541
    usbhid_submit_report drivers/hid/usbhid/hid-core.c:640 [inline]
    usbhid_request+0x5b/0xa0 drivers/hid/usbhid/hid-core.c:1303
    hid_hw_request+0x3c/0x70 drivers/hid/hid-core.c:2521
    hiddev_ioctl+0x33e/0x9d0 drivers/hid/usbhid/hiddev.c:726
    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+0xf8/0x610 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

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


---
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If the report is already addressed, let syzbot know by replying with:
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#syz undup

Re: [syzbot] [input?] [usb?] memory leak in __usbhid_submit_report (2)

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+e2c057ea576d2644e2be@syzkaller.appspotmail.com
Tested-by: syzbot+e2c057ea576d2644e2be@syzkaller.appspotmail.com

Tested on:

commit:         bd5f485f Merge tag 'soc-arm-7.3' of git://git.kernel.o..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=132db815580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=82c3db8c83e3e016
dashboard link: https://syzkaller.appspot.com/bug?extid=e2c057ea576d2644e2be
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch:          https://syzkaller.appspot.com/x/patch.diff?x=16bd9679580000

Note: testing is done by a robot and is best-effort only.

Re: [syzbot] [input?] [usb?] memory leak in __usbhid_submit_report (2)

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+e2c057ea576d2644e2be@syzkaller.appspotmail.com
Tested-by: syzbot+e2c057ea576d2644e2be@syzkaller.appspotmail.com

Tested on:

commit:         bd5f485f Merge tag 'soc-arm-7.3' of git://git.kernel.o..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=1597da25580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=82c3db8c83e3e016
dashboard link: https://syzkaller.appspot.com/bug?extid=e2c057ea576d2644e2be
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch:          https://syzkaller.appspot.com/x/patch.diff?x=15ebb815580000

Note: testing is done by a robot and is best-effort only.