SYZFAIL: can't reallocate (2)

Status: moderation: reported on 2026/09/06 13:06
Reported-by: syzbot+a16e6602bc582b424da4@syzkaller.appspotmail.com
First crash: 18d, last: 18d
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
gvisor SYZFAIL: can't reallocate -1 3 812d 805d 0/26 auto-obsoleted due to no activity on 2024/09/26 07:33

Sample crash report:
SYZFAIL: can't reallocate
 (errno 9: Bad file descriptor)
D0830 12:02:14.971422       1 task_exit.go:226] [  30:  30] Transitioning from exit state TaskExitNone to TaskExitInitiated
D0830 12:02:14.972825       1 task_signals.go:475] [ 5578: 5578] No task notified of signal 9
D0830 12:02:14.972884       1 task_signals.go:464] [   1:   1] Notified of signal 17
D0830 12:02:14.972916       1 task_exit.go:226] [  30:  30] Transitioning from exit state TaskExitInitiated to TaskExitZombie
D0830 12:02:14.972930       1 task_exit.go:226] [  30:  30] Transitioning from exit state TaskExitZombie to TaskExitDead
D0830 12:02:14.972962       1 task_signals.go:175] [   1:   1] Restarting syscall 202: interrupted by signal 17
D0830 12:02:14.972977       1 task_signals.go:216] [   1:   1] Signal 17: delivering to handler
D0830 12:02:14.973060       1 loader.go:1866] updated processes (removal): map[{ci-gvisor-ptrace-3-cover-1 0}:0x152dccef8040]
D0830 12:02:14.973107       1 controller.go:934] containerManager.Wait, cid: ci-gvisor-ptrace-3-cover-1, pid: 30, waitStatus: 0x4300, err: <nil>
D0830 12:02:14.973157       1 urpc.go:592] urpc: successfully marshalled 40 bytes.
D0830 12:02:14.973178       1 urpc.go:372] urpc: RPC call for method containerManager.WaitPID succeeded.
D0830 12:02:14.973269  839339 urpc.go:635] urpc: unmarshal success.
D0830 12:02:14.973356       1 urpc.go:433] urpc: unregistering client with FD 35
I0830 12:02:14.973354  839339 cli.go:317] Exiting with status: 17152
D0830 12:02:14.992759       1 urpc.go:422] urpc: registering client with FD 25
D0830 12:02:14.992960       1 urpc.go:635] urpc: unmarshal success.
D0830 12:02:14.992980       1 urpc.go:302] urpc: handling RPC call for method debug.Stacks
D0830 12:02:14.997162       1 urpc.go:592] urpc: successfully marshalled 155105 bytes.
D0830 12:02:14.997182       1 urpc.go:372] urpc: RPC call for method debug.Stacks succeeded.
D0830 12:02:14.998634       1 urpc.go:433] urpc: unregistering client with FD 25
D0830 12:02:14.999200       1 urpc.go:422] urpc: registering client with FD 25
D0830 12:02:14.999305       1 urpc.go:635] urpc: unmarshal success.
D0830 12:02:14.999327       1 urpc.go:302] urpc: handling RPC call for method containerManager.Processes
D0830 12:02:14.999361       1 controller.go:320] containerManager.Processes, cid: ci-gvisor-ptrace-3-cover-1
D0830 12:02:14.999580       1 urpc.go:592] urpc: successfully marshalled 2511 bytes.
D0830 12:02:14.999591       1 urpc.go:372] urpc: RPC call for method containerManager.Processes succeeded.
D0830 12:02:15.000735       1 urpc.go:433] urpc: unregistering client with FD 25
D0830 12:02:16.993294       1 task_signals.go:464] [   1: 1250] Notified of signal 23
D0830 12:02:16.993486       1 task_signals.go:216] [   1: 1250] Signal 23: delivering to handler
D0830 12:02:17.467443       1 watchdog.go:316] Watchdog starting loop, tasks: 48, discount: 0s
D0830 12:02:23.994697       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:23.994819       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:23.995040       1 task_signals.go:464] [   1:  26] Notified of signal 23
D0830 12:02:23.995228       1 task_signals.go:175] [   1:  26] Restarting syscall 202: interrupted by signal 23
D0830 12:02:23.995291       1 task_signals.go:216] [   1:  26] Signal 23: delivering to handler
D0830 12:02:23.995304       1 task_signals.go:464] [   1:  14] Notified of signal 23
D0830 12:02:23.995429       1 task_signals.go:464] [   1:  27] Notified of signal 23
D0830 12:02:23.995576       1 task_signals.go:216] [   1:  27] Signal 23: delivering to handler
D0830 12:02:23.995686       1 task_signals.go:464] [   1:  12] Notified of signal 23
D0830 12:02:23.995786       1 task_signals.go:175] [   1:  12] Restarting syscall 202: interrupted by signal 23
D0830 12:02:23.995813       1 task_signals.go:216] [   1:  12] Signal 23: delivering to handler
D0830 12:02:23.995847       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:23.995878       1 task_signals.go:216] [   1:  14] Signal 23: delivering to handler
D0830 12:02:23.996060       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:23.996609       1 task_signals.go:464] [   1:   3] Notified of signal 23
D0830 12:02:23.997116       1 task_signals.go:464] [   1:  11] Notified of signal 23
D0830 12:02:23.997180       1 task_signals.go:216] [   1:   3] Signal 23: delivering to handler
D0830 12:02:23.997200       1 task_signals.go:175] [   1:  11] Restarting syscall 202: interrupted by signal 23
D0830 12:02:23.997218       1 task_signals.go:216] [   1:  11] Signal 23: delivering to handler
D0830 12:02:23.997268       1 task_signals.go:464] [   1:  23] Notified of signal 23
D0830 12:02:23.997367       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:23.997463       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:23.997471       1 task_signals.go:216] [   1:  23] Signal 23: delivering to handler
D0830 12:02:23.998180       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:23.998601       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:23.999466       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:23.999573       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.000438       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:24.000666       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.001366       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:24.001555       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.001995       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:24.002060       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.002925       1 task_signals.go:475] [   1:   4] No task notified of signal 23
D0830 12:02:24.003004       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.003643       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:24.003806       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.004731       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:24.004842       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler
D0830 12:02:24.005702       1 task_signals.go:464] [   1:   4] Notified of signal 23
D0830 12:02:24.005787       1 task_signals.go:175] [   1:   4] Restarting syscall 202: interrupted by signal 23
D0830 12:02:24.005810       1 task_signals.go:216] [   1:   4] Signal 23: delivering to handler

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/30 12:02 gvisor 4a7fcd5fc048 2f52988a .config console log report info ci-gvisor-ptrace-3-cover SYZFAIL: can't reallocate
* Struck through repros no longer work on HEAD.