Re: [syzbot] [media?] memory leak in vidtv_psi_pmt_create_sec_for_each_pat_entry

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    b3dfbde62cf1 Merge tag 'linux_kselftest-fixes-7.4-rc3' of ..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=13cfd83d580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4361b1bb937ae1c4
dashboard link: https://syzkaller.appspot.com/bug?extid=3bb39e30be6cca84a865
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16436f35580000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3bb39e30be6cca84a865@xxxxxxxxxxxxxxxxxxxxxxxxx

BUG: memory leak
unreferenced object 0xffff8881112c8690 (size 8):
  comm "syz.6.49", pid 6988, jiffies 4294945880
  hex dump (first 8 bytes):
    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:4733 [inline]
    slab_alloc_node mm/slub.c:5033 [inline]
    __do_kmalloc_node mm/slub.c:5530 [inline]
    __kmalloc_noprof+0x3ce/0x510 mm/slub.c:5556
    _kmalloc_noprof include/linux/slab.h:995 [inline]
    _kzalloc_noprof include/linux/slab.h:1312 [inline]
    vidtv_psi_pmt_create_sec_for_each_pat_entry+0x7d/0x1b0 drivers/media/test-drivers/vidtv/vidtv_psi.c:1471
    vidtv_channel_si_init+0x544/0x770 drivers/media/test-drivers/vidtv/vidtv_channel.c:478
    vidtv_mux_init+0x115/0x390 drivers/media/test-drivers/vidtv/vidtv_mux.c:525
    vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:198 [inline]
    vidtv_start_feed+0x1d4/0x260 drivers/media/test-drivers/vidtv/vidtv_bridge.c:243
    dmx_ts_feed_start_filtering+0x8e/0x130 drivers/media/dvb-core/dvb_demux.c:747
    dvb_dmxdev_start_feed+0x11c/0x170 drivers/media/dvb-core/dmxdev.c:658
    dvb_dmxdev_filter_start+0xd8/0x440 drivers/media/dvb-core/dmxdev.c:769
    dvb_demux_do_ioctl+0x297/0x7d0 drivers/media/dvb-core/dmxdev.c:1072
    dvb_usercopy+0x116/0x2d0 drivers/media/dvb-core/dvbdev.c:996
    dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1208
    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:61 [inline]
    do_syscall_64+0xe9/0x540 arch/x86/entry/syscall_64.c:89
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

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


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