syzbot

 sign-in | mailing list | source | docs | 🏰
🐞 Open [1352]
≡ Subsystems
🐞 Fixed [7099]
🐞 Invalid [18752]
⬇ Missing Backports [220]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
✨ AI
💬 Send us feedback

INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.

Status: upstream: reported on 2026/03/30 17:02
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+52fb13daf83df5a1b81a@syzkaller.appspotmail.com
First crash: 137d, last: 3d07h
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision Error
2e27a215-92ea-44fe-bc48-40c07ba768b7 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ✅ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ✅ VMHostTrigger: ❌ ❓ INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds. 2026/05/18 01:26 2026/05/18 01:26 2026/05/18 02:03 de5aae85e5f28e2fa1c7deefcc24fe286abe5140
db04331d-1dd8-475a-9921-9a84b2b8a4df repro ❓ INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds. 2026/03/08 08:44 2026/03/08 08:44 2026/03/08 08:59 31e9c887f7dc24e04b3ca70d0d54fc34141844b0
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds. 0 (1) 2026/03/30 17:02

Sample crash report:
INFO: The task syz-executor:21807 has been waiting for writeback completion for more than 152 seconds.

Crashes (9):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/06 12:00 upstream 9207d47f966b 26da2c66 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/03/30 17:01 upstream 7aaa8047eafd 458630d8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/03/17 09:59 upstream 2d1373e4246d c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/02/28 15:39 upstream 4d349ee5c778 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/01/31 05:20 upstream 283073725700 e01a0ca6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/04/05 03:15 linux-next cc13002a9f98 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/01/02 18:51 linux-next cc3aa43b44bd d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/05/16 19:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5cbb61bf4168 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
2026/05/08 18:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5cbb61bf4168 0c5a8d8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: The task syz-executor:NUM has been waiting for writeback completion for more than NUM seconds.
* Struck through repros no longer work on HEAD.