memory leak in copy_process (6)

Status: auto-obsoleted due to no activity on 2026/08/30 04:43
Subsystems: kernel
Labels: prio:high
[Documentation on labels]
First crash: 126d, last: 92d
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
b486e37c assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ memory leak in copy_process (6) 2026/06/01 10:12 2026/06/01 10:12 2026/06/01 11:09 6b4a8443
4e285303 assessment-security 💥 memory leak in copy_process (6) 2026/05/15 11:14 2026/05/15 11:14 2026/05/15 11:15 9cd3beaa
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream memory leak in copy_process kernel 3 syz, C 23 2017d 2114d 19/29 fixed on 2021/03/10 01:48
upstream memory leak in copy_process (2) kernel 3 syz, C 2 1995d 1994d 20/29 fixed on 2021/11/10 00:50
upstream memory leak in copy_process (5) kernel 3 syz, C 1 1276d 1272d 22/29 fixed on 2023/06/08 14:41
upstream memory leak in copy_process (4) kernel 3 syz, C 1 1372d 1372d 0/29 closed as invalid on 2023/02/17 17:35
upstream memory leak in copy_process (3) kernel 3 syz, C 2 1482d 1589d 0/29 closed as invalid on 2022/11/09 20:31
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2026/05/30 06:05 52m kuniyu@google.com upstream report log
2026/05/10 06:09 40m retest repro upstream no crash log

Sample crash report:
2026/04/26 03:03:57 executed programs: 19
2026/04/26 03:04:06 executed programs: 21
BUG: memory leak
unreferenced object 0xffff888103405f00 (size 184):
  comm "syz.0.37", pid 6027, jiffies 4294951278
  hex dump (first 32 bytes):
    01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00  ................
    de 07 00 00 00 00 00 00 58 2e aa 02 81 88 ff ff  ........X.......
  backtrace (crc 2e4fcb10):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4574 [inline]
    slab_alloc_node mm/slub.c:4898 [inline]
    kmem_cache_alloc_noprof+0x36c/0x480 mm/slub.c:4905
    alloc_pid+0xdf/0x880 kernel/pid.c:188
    copy_process+0x1e3f/0x2cf0 kernel/fork.c:2278
    kernel_clone+0xde/0x700 kernel/fork.c:2723
    __do_sys_clone3+0x18c/0x210 kernel/fork.c:3027
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xee/0xf80 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

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

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/04/26 03:04 upstream 897d54018cc9 9c2d0995 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in copy_process
* Struck through repros no longer work on HEAD.