#15179: [kernel] apps deadlock on parent bfs image unmount
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Reporter: diver | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: System/Kernel | Version: R1/Development
Keywords: | Blocked By:
Blocking: | Has a Patch: 0
Platform: All |
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hrev53259 x86_64.
To reproduce:
{{{
# create and mount 1G BFS image
dd if=/dev/zero of=1g.bfs bs=1 count=0 seek=1G
mkfs -t bfs -q 1g.bfs
mkdir /bfs1
mount 1g.bfs
cd /bfs1
# create and mount 100M nested BFS image
dd if=/dev/zero of=100m.bfs bs=1 count=0 seek=100M
mkfs -t bfs -q 100m.bfs
mkdir /bfs2
mount 100m.bfs
# force unmount parent image
unmount -f /bfs1
}}}
would deadlock unmount/Tracker/DriveSetup and result in this syslog
output:
{{{
KERN: could not read block 2: bytesRead: -1, error: Bad file descriptor
KERN: bfs: Free:484: I/O error
KERN: bfs: Free:1034: I/O error
KERN: could not read block 3: bytesRead: -1, error: Bad file descriptor
KERN: bfs: Free:484: I/O error
KERN: bfs: Free:1034: I/O error
KERN: bfs: could not write log area: Bad file descriptor!
KERN: bfs: writing current log entry failed: I/O error
KERN: could not write back block 16384 (Bad file descriptor)
}}}
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Ticket URL: <https://dev.haiku-os.org/ticket/15179>
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