BUG: memory leak
unreferenced object 0xffff88811cd2d800 (size 1024):
  comm "syz-executor.0", pid 6257, jiffies 4294944608
  hex dump (first 32 bytes):
    00 d4 d2 1c 81 88 ff ff 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 1f3428dd):
    [<ffffffff8165853b>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<ffffffff8165853b>] slab_post_alloc_hook mm/slub.c:4123 [inline]
    [<ffffffff8165853b>] slab_alloc_node mm/slub.c:4168 [inline]
    [<ffffffff8165853b>] __kmalloc_cache_noprof+0x32b/0x3f0 mm/slub.c:4324
    [<ffffffff82b603a7>] kmalloc_noprof include/linux/slab.h:901 [inline]
    [<ffffffff82b603a7>] kzalloc_noprof include/linux/slab.h:1037 [inline]
    [<ffffffff82b603a7>] gsm_dlci_alloc+0x27/0x1f0 drivers/tty/n_gsm.c:2643
    [<ffffffff82b6059c>] gsm_activate_mux+0x1c/0x1d0 drivers/tty/n_gsm.c:3184
    [<ffffffff82b67450>] gsm_config_ext drivers/tty/n_gsm.c:3489 [inline]
    [<ffffffff82b67450>] gsmld_ioctl+0x6d0/0x9f0 drivers/tty/n_gsm.c:3853
    [<ffffffff82b4a8ec>] tty_ioctl+0x3ec/0xce0 drivers/tty/tty_io.c:2812
    [<ffffffff8173dc2a>] vfs_ioctl fs/ioctl.c:51 [inline]
    [<ffffffff8173dc2a>] __do_sys_ioctl fs/ioctl.c:906 [inline]
    [<ffffffff8173dc2a>] __se_sys_ioctl fs/ioctl.c:892 [inline]
    [<ffffffff8173dc2a>] __x64_sys_ioctl+0xfa/0x140 fs/ioctl.c:892
    [<ffffffff8527f58e>] do_syscall_x64 arch/x86/entry/common.c:52 [inline]
    [<ffffffff8527f58e>] do_syscall_64+0x9e/0x1d0 arch/x86/entry/common.c:83
    [<ffffffff85400130>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff88811dc21000 (size 4096):
  comm "syz-executor.0", pid 6257, jiffies 4294944608
  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):
    [<ffffffff81659406>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<ffffffff81659406>] slab_post_alloc_hook mm/slub.c:4123 [inline]
    [<ffffffff81659406>] slab_alloc_node mm/slub.c:4168 [inline]
    [<ffffffff81659406>] __do_kmalloc_node mm/slub.c:4297 [inline]
    [<ffffffff81659406>] __kmalloc_noprof+0x366/0x4f0 mm/slub.c:4310
    [<ffffffff8283c169>] kmalloc_noprof include/linux/slab.h:905 [inline]
    [<ffffffff8283c169>] kmalloc_array_noprof include/linux/slab.h:946 [inline]
    [<ffffffff8283c169>] __kfifo_alloc+0x89/0xf0 lib/kfifo.c:44
    [<ffffffff82b603f1>] gsm_dlci_alloc+0x71/0x1f0 drivers/tty/n_gsm.c:2648
    [<ffffffff82b6059c>] gsm_activate_mux+0x1c/0x1d0 drivers/tty/n_gsm.c:3184
    [<ffffffff82b67450>] gsm_config_ext drivers/tty/n_gsm.c:3489 [inline]
    [<ffffffff82b67450>] gsmld_ioctl+0x6d0/0x9f0 drivers/tty/n_gsm.c:3853
    [<ffffffff82b4a8ec>] tty_ioctl+0x3ec/0xce0 drivers/tty/tty_io.c:2812
    [<ffffffff8173dc2a>] vfs_ioctl fs/ioctl.c:51 [inline]
    [<ffffffff8173dc2a>] __do_sys_ioctl fs/ioctl.c:906 [inline]
    [<ffffffff8173dc2a>] __se_sys_ioctl fs/ioctl.c:892 [inline]
    [<ffffffff8173dc2a>] __x64_sys_ioctl+0xfa/0x140 fs/ioctl.c:892
    [<ffffffff8527f58e>] do_syscall_x64 arch/x86/entry/common.c:52 [inline]
    [<ffffffff8527f58e>] do_syscall_64+0x9e/0x1d0 arch/x86/entry/common.c:83
    [<ffffffff85400130>] entry_SYSCALL_64_after_hwframe+0x77/0x7f