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new emap & kernel diagnostic assertion "ci->ci_ilevel < IPL_IPI" failed


With an up-to-date kernel, my amd64 workstation does not build a
release anymore with -j 4 ... A diagnostic kernel fires the following
assertion within a few seconds/minutes :

panic: kernel diagnostic assertion "ci->ci_ilevel < IPL_IPI" failed:
file "/local/src/NetBSD/src/sys/arch/x86/x86/pmap.c", line 2657

fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff80230595 cs 8 rflags 246 cr2
7f7ffd86a000 cpl 8
rsp ffff800051efc8a0
Stopped in pid 1354.1 (gawk) at netbsd:breakpoint+0x5:  leave
db{0}> bt
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x29a
__kernassert() at netbsd:__kernassert+0x2d
pmap_load() at netbsd:pmap_load+0x25e
pmap_emap_sync() at netbsd:pmap_emap_sync+0x4d
uvm_emap_switch() at netbsd:uvm_emap_switch+0x66
mi_switch() at netbsd:mi_switch+0x1cf
sleepq_block() at netbsd:sleepq_block+0xcd
cv_wait_sig() at netbsd:cv_wait_sig+0x101
pipe_read() at netbsd:pipe_read+0x310
dofileread() at netbsd:dofileread+0x71
sys_read() at netbsd:sys_read+0x73
syscall() at netbsd:syscall+0xb7

This backtrace is the last one i encountered, but got some others with
make(1) command.

Unfortunately, i did not get a dump yet ...

Any idea ? Thanks.

Nicolas Joly

Biological Software and Databanks.
Institut Pasteur, Paris.

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