[Bug 205932] [panic] Kernel panic when copying from ext2fs partition to UFS partition

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205932

--- Comment #9 from Damjan Jovanovic <damjan.jov at gmail.com> ---
On 10.2 I get a very similar panic to Will B when reading mmaped files, and the
patch from bug 205938 fixes it, so this is probably a duplicate of 205938:

panic: __lockmgr_args: recursing on non recusive lockmgr getblk @ (null):0

And the stack trace (details left out, due to i386 vs amd64 differences):

db_trace_self_wrapper
kdb_backtrace
vpanic
panic
__lockmgr_args
getblk
breadn_flags
ext4_ext_find_extent
ext2_bmap
VOP_BMAP_APV
vnode_pager_generic_getpages
ext2_getpages
VOP_GETPAGES_APV
vnode_pager_getpages
vm_fault_hold
vm_fault
trap_pfault
trap
calltrap

Oh and sysutils/fusefs-lkl looks awesome, thank you! It should also help other
projects interoperating with Linux drivers, such as webcamd.

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