syzbot

 sign-in | mailing list | source | docs | 🏰
🐞 Open [1323]
≡ Subsystems
🐞 Fixed [7151]
🐞 Invalid [18907]
⬇ Missing Backports [220]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
✨ AI
💬 Send us feedback

memory leak in vidtv_psi_service_desc_init (2)

Status: upstream: reported C repro on 2026/05/26 02:49
Subsystems: media
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+acc3b75c010446ad403f@syzkaller.appspotmail.com
First crash: 19d, last: 4d05h
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Ext Bug ID Bug Created Started Finished Revision Error
5c975208-07d8-4a96-b044-04b897c95dca assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ memory leak in vidtv_psi_service_desc_init (2) 2026/06/02 07:10 2026/06/02 07:10 2026/06/02 08:01 1095583bae1d2729a3b4be301cb6ddc85ced9e38
23eb23ae-5351-4f1e-9987-e63e586d3fdc assessment-security 💥 memory leak in vidtv_psi_service_desc_init (2) 2026/05/23 08:08 2026/05/23 08:08 2026/05/23 08:08 c69befb30ac10e158cc9d1557b508ee3f0eca1de failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "--tags" "f569e972c8e9057ee9c286220c83a480ebf30cc5" "45255ea1ca096b11b1303c9b54502a28f3a31dd1"]: exit status 128 error: insufficient permission for adding an object to repository database .git/objects fatal: failed to write object fatal: unpack-objects failed
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[PATCH] media: dvb-core: roll back partial PES feed starts 1 (1) 2026/05/27 15:39
[syzbot] [media?] memory leak in vidtv_psi_service_desc_init (2) 0 (5) 2026/05/26 12:49
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream memory leak in vidtv_psi_service_desc_init media 3 C 13 39d 121d 29/29 fixed on 2026/05/21 07:49
▶ ▼ Last patch testing requests (4)
Created Duration User Patch Repo Result
2026/05/26 12:49 20m zhanghaotian@uniontech.com patch upstream report log
2026/05/26 10:04 28m zhanghaotian@uniontech.com patch upstream report log
2026/05/26 10:04 20m zhanghaotian@uniontech.com patch upstream report log
2026/05/26 09:29 20m zhanghaotian@uniontech.com upstream report log

Sample crash report:
BUG: memory leak
unreferenced object 0xffff88812791e500 (size 32):
  comm "syz.0.17", pid 5931, jiffies 4294944092
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 48 19 02 0c 40 e8 dc 12  ........H...@...
    81 88 ff ff 0a 80 65 1f 15 81 88 ff ff 00 00 00  ......e.........
  backtrace (crc b035a4b):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4575 [inline]
    slab_alloc_node mm/slub.c:4899 [inline]
    __kmalloc_cache_noprof+0x371/0x480 mm/slub.c:5415
    kmalloc_noprof include/linux/slab.h:950 [inline]
    kzalloc_noprof include/linux/slab.h:1188 [inline]
    vidtv_psi_service_desc_init+0x74/0x1b0 drivers/media/test-drivers/vidtv/vidtv_psi.c:233
    vidtv_channel_s302m_init+0xb1/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:83
    vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:528
    vidtv_mux_init+0x372/0x390 drivers/media/test-drivers/vidtv/vidtv_mux.c:515
    vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]
    vidtv_start_feed+0x1d4/0x260 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239
    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:1065
    dvb_usercopy+0x116/0x2d0 drivers/media/dvb-core/dvbdev.c:996
    dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1201
    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

BUG: memory leak
unreferenced object 0xffff88812791e4e0 (size 32):
  comm "syz.0.17", pid 5931, jiffies 4294944092
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 05 04 42 53 53 44 00 00  ..........BSSD..
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 168dca61):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4575 [inline]
    slab_alloc_node mm/slub.c:4899 [inline]
    __do_kmalloc_node mm/slub.c:5295 [inline]
    __kmalloc_noprof+0x3b7/0x550 mm/slub.c:5308
    kmalloc_noprof include/linux/slab.h:954 [inline]
    kzalloc_noprof include/linux/slab.h:1188 [inline]
    vidtv_psi_registration_desc_init+0x2d/0xd0 drivers/media/test-drivers/vidtv/vidtv_psi.c:282
    vidtv_channel_s302m_init+0x132/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:107
    vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:528
    vidtv_mux_init+0x372/0x390 drivers/media/test-drivers/vidtv/vidtv_mux.c:515
    vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]
    vidtv_start_feed+0x1d4/0x260 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239
    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:1065
    dvb_usercopy+0x116/0x2d0 drivers/media/dvb-core/dvbdev.c:996
    dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1201
    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

BUG: memory leak
unreferenced object 0xffff88811c115380 (size 64):
  comm "syz.0.17", pid 5931, jiffies 4294944092
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 4d 8b e0 c6 12 1c 81 88  ........M.......
    ff ff 20 00 50 11 1c 81 88 ff ff 66 00 77 57 1c  .. .P......f.wW.
  backtrace (crc aac5e1e6):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4575 [inline]
    slab_alloc_node mm/slub.c:4899 [inline]
    __kmalloc_cache_noprof+0x371/0x480 mm/slub.c:5415
    kmalloc_noprof include/linux/slab.h:950 [inline]
    kzalloc_noprof include/linux/slab.h:1188 [inline]
    vidtv_psi_short_event_desc_init+0x9e/0x220 drivers/media/test-drivers/vidtv/vidtv_psi.c:389
    vidtv_channel_s302m_init+0x1c2/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:124
    vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:528
    vidtv_mux_init+0x372/0x390 drivers/media/test-drivers/vidtv/vidtv_mux.c:515
    vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]
    vidtv_start_feed+0x1d4/0x260 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239
    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:1065
    dvb_usercopy+0x116/0x2d0 drivers/media/dvb-core/dvbdev.c:996
    dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1201
    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

BUG: memory leak
unreferenced object 0xffff88811c115000 (size 64):
  comm "syz.0.17", pid 5931, jiffies 4294944092
  hex dump (first 32 bytes):
    0b 4c 75 64 77 69 67 20 76 61 6e 20 42 65 65 74  .Ludwig van Beet
    68 6f 76 65 6e 3a 20 46 fc 72 20 45 6c 69 73 65  hoven: F.r Elise
  backtrace (crc 6d5386ce):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4575 [inline]
    slab_alloc_node mm/slub.c:4899 [inline]
    __do_kmalloc_node mm/slub.c:5295 [inline]
    __kmalloc_node_track_caller_noprof+0x3da/0x5c0 mm/slub.c:5408
    __kmemdup_nul mm/util.c:64 [inline]
    kstrdup+0x3c/0x80 mm/util.c:84
    vidtv_psi_short_event_desc_init+0x1f0/0x220 drivers/media/test-drivers/vidtv/vidtv_psi.c:412
    vidtv_channel_s302m_init+0x1c2/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:124
    vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:528
    vidtv_mux_init+0x372/0x390 drivers/media/test-drivers/vidtv/vidtv_mux.c:515
    vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]
    vidtv_start_feed+0x1d4/0x260 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239
    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:1065
    dvb_usercopy+0x116/0x2d0 drivers/media/dvb-core/dvbdev.c:996
    dvb_demux_ioctl+0x29/0x40 drivers/media/dvb-core/dmxdev.c:1201
    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

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/06/07 18:25 upstream 979c294509f9 cc095639 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in vidtv_psi_service_desc_init
2026/06/06 18:30 upstream c10130c234c8 cc095639 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in vidtv_psi_service_desc_init
2026/06/06 17:43 upstream c10130c234c8 cc095639 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in vidtv_psi_service_desc_init
2026/06/06 17:39 upstream c10130c234c8 cc095639 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in vidtv_psi_service_desc_init
2026/05/23 07:58 upstream 45255ea1ca09 c69befb3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in vidtv_psi_service_desc_init
* Struck through repros no longer work on HEAD.