https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276944
Bug ID: 276944
Summary: no kernel panic after forcible unmount of /
Product: Base System
Version: 13.2-STABLE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 248309
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=248309&action=edit
crash screenshot
My system was hung because the kernel failed to panic after / was forcibly
unmounted due to an I/O error. There is code in ffs_fsfail_cleanup_locked to
panic in this case. It did not work. The system kept running but processes
crashed as they tried to page in from the bad disk.
Key lines below. See attached screenshot for more. There are no log messages
because /var/log/messages is on the bad disk. I am running a stable/13 kernel
("13.3-STABLE") on an old amd64 system.
g_vfs_done():ada0p2[WRITE(offset=1392508928, length=20480)]error=6
UFS: forcibly unmounting /dev/ada0p2 from /
swap_pager: I/O error - pagein failed
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