Bug 267261 - panic: _assert_sbuf_integrity:122: wrote past end of sbuf (0 >= 0)
Summary: panic: _assert_sbuf_integrity:122: wrote past end of sbuf (0 >= 0)
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: CURRENT
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords: crash, needs-qa
Depends on:
Blocks:
 
Reported: 2022-10-21 20:59 UTC by Bjoern A. Zeeb
Modified: 2022-10-22 07:01 UTC (History)
1 user (show)

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Description Bjoern A. Zeeb freebsd_committer freebsd_triage 2022-10-21 20:59:27 UTC 
I added func:line to the three identical prints out of the assertions (one later in the code);  this is the else case in _assert_sbuf_integrity.

The code in questions comes out of debugfs but it makes me question if there can be a simply create and delete combination as a reproducer?  I haven't dug in yet.


panic: _assert_sbuf_integrity:122: wrote past end of sbuf (0 >= 0)
cpuid = 3
time = 1666385636
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe008a3047b0
vpanic() at vpanic+0x151/frame 0xfffffe008a304800
panic() at panic+0x43/frame 0xfffffe008a304860
sbuf_setpos() at sbuf_setpos/frame 0xfffffe008a304870
sbuf_delete() at sbuf_delete+0x18/frame 0xfffffe008a304890
..