Showstopper bugs and PRs

• Any issues found by syzbot may potentially crash the kernel and should be investigated and fixed.
• PR #55272: userland watchdog processes may be outstalled
• topdown uvm mmap assertion failure (PR upcoming) - PMAP_PREFER can cause KASSERT failure

Regressions since netbsd-9

• PR #54913: fexecve(2) panics in chroot(8)
• PR #55370: Invalid modification/connection time with mount_null(8)
• PR #55489: Infinite loop in "rump ifconfig bridge0 create"
• PR #55509: npm install -g electron crashes the kernel
• PR #55567: tcp-send slows down to slow single byte transfers
• PR #55997: lang/perl5 fails to build on NetBSD-current under COMPAT_NETBSD32 (Perl bug)
• PR #56073: reading from /dev/pad panics the kernel with an assertion failure

PRs worth fixing

• PR #51734: hdaudio(4) "RIRB timeout" interrupt storm on boot
• PR #52583: iwm(4) "unhandled firmware response" followed by panic after extended use
• PR #53173: "go test net/http" locks up the machine
• PR #53155: Wedge after <12h uptime when >2 bnx network interfaces in use
• PR #53291: GPT prevents installation
• PR #53128: Boot says "default boot twice, skipping..."
• PR #54345: kernel diagnostic assertion "xfer != NULL" in wdc.c (may be fixed, needs revisiting)
• PR #54727: writing a large file causes unreasonable system behaviour (should be fixed, needs to be checked) (fixed in -current, no backport to netbsd-9 planned)
• PR #54761: nvme corruption on GENERIC without DIAGNOSTIC
• PR #54771: nvme(4) fails to attach (not a showstopper)
• PR #54914: fcntl(F_GETPATH) is broken in chroot
• PR #55042: kernel panics when ZFS filesystem is exported with NFS
• PR #55458: entropy: WrAnRdNcING no nstropy in eed
• PR #55510: pg_jobc going negative and crashing the kernel
• PR #55533: mmap(2) fails when called with a non-zero hint
• PR #55892: npf cannot handle large tables

Test Regressions since netbsd-9

Some of this issues are older (so "regression" is slightly wrong), but it was necessary to disable tests to not break whole test setups. This are likely effects caused by bugs in the tests or RUMP, so not considered show stoppers.

• PR #49141: lib/librumpclient/t_exec/threxec test randomly fails
• PR #50350: rump/rumpkern/t_sp/stress_{long,short} fail
• PR #55304: lib/librumpclient/t_exec/threxec, rump/rumpkern/t_sp/reconnect now fail
• PR #55356: stress_killer test case now fails on real hardware
• PR #55338: rump threxec test broken
• PR #55632: tests/net/ipsec/t_ipsec_misc: timeout tests fail randomly

Ongoing projects and unmerged branches

• Wifi renewal on hg
• Updating drmkms to Linux 5.6
• Removing PF
  • pf was deprecated in 9 so it could be removed in 10.
  • what is left to do to improve npf?
    • ftp-proxy(8) does not support npf but does support ipf and pf
    • altq(4)
    • shared rulesets ("ipf groups")?
    • address subset selection?
    • update NetBSD Guide from ipf and document migrations
    • note that most of the above are ipf things, not pf things.
    • ...
• Waiting for Randot
  • we probably need to decide on how randomness would work before branch.
  • Riastradh proposed getrandom(p,n,0) should not block. this needs to be done still.
  • getentropy is missing from NetBSD but will be in POSIX.
  • rndctl(8) includes misleading features that no longer work with the current entropy behavior (disable/enable estimation, etc). it should maybe also print the number of collected samples in -l.

Current status and timeline

• no concrete timeline yet, to be re-evaluated mid-March
• current is getting a lot better, but there are still issues that need fixing for the branch
• hoping to see the best architectures with single digit unexpected failures before the branch

Last Test Results overview

For all tests, see releng's tests page.

Test	Last checked	Status	Last full test run	Comments
XEN, i386 and amd64	2021-02-27	10 failures
amd64, qemu, official b5 runs	2021-03-01	22 failures
evbarm64el-aarch64, real hardware	2021-02-27	26 failures
evbearmv7hfeb, real hardware	2021-03-01	28 failures
i386, qemu, official b5 runs	2021-03-01	38 failures
sparc64, real hardware	2021-02-17	37 failures		all wg(4) tests fail due to mbuf pool memory corruption
evbarmv5, real hardware	2021-03-01	64 failures		userland watchdog starvation PR 55272
sparc64, qemu, low memory	2021-02-26	431 failures
landisk, SH4, real hardware, low memory	2021-03-01	132 failures	2021-01-05	pagedeamon lockups PR 55491