Re: kern/59337: Kernel panic while running ATF suite on -current

[Rares Aioanei <bsdlisten%outlook.com@localhost>]

The following reply was made to PR kern/59337; it has been noted by GNATS.

From: Rares Aioanei <bsdlisten%outlook.com@localhost>
To: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/59337: Kernel panic while running ATF suite on -current
Date: Mon, 21 Apr 2025 12:09:33 +0300

 On 4/21/25 12:00, rares.aioanei%gmail.com@localhost wrote:
 >> Number:         59337
 >> Category:       kern
 >> Synopsis:       Kernel panic while running ATF suite on -current
 >> Confidential:   no
 >> Severity:       non-critical
 >> Priority:       medium
 >> Responsible:    kern-bug-people
 >> State:          open
 >> Class:          sw-bug
 >> Submitter-Id:   net
 >> Arrival-Date:   Mon Apr 21 09:00:02 +0000 2025
 >> Originator:     Rares Aioanei
 >> Release:        10.99.14 (updated today, 21st of April)
 >> Organization:
 >> Environment:
 > NetBSD netbsdvmcurr.localdom.ain 10.99.14 NetBSD 10.99.14 (GENERIC) #0: Sat Apr 19 14:25:11 UTC 2025  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
 > 
 >> Description:
 > While running ATF tests and updating my pkgsrc tree at the same time, the machine rebooted. Afterwards, I found this in /var/log/messages :
 > 
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5157224] panic: kernel diagnostic assertion "!(l->l_md.md_flags & MDL_FPU_IN_CPU)" failed: file "/usr/src/sys/arch/x86/x86/fpu.c", line 149
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5157224] cpu2: Begin traceback...
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5157224] vpanic() at netbsd:vpanic+0x171
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5157224] kern_assert() at netbsd:kern_assert+0x4b
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] process_read_fpregs_xmm() at netbsd:process_read_fpregs_xmm+0x122
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] process_read_fpregs() at netbsd:process_read_fpregs+0x9
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] proc_regio() at netbsd:proc_regio+0x69
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] do_ptrace() at netbsd:do_ptrace+0xc4f
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] sys_ptrace() at netbsd:sys_ptrace+0x2b
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] syscall() at netbsd:syscall+0x9d
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] --- syscall (number 26) ---
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] netbsd:syscall+0x9d:
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] cpu2: End traceback...
 > Apr 21 11:43:30 netbsdvmcurr /netbsd:
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5257809] dumping to dev 0,1 (offset=1039, size=2097022):
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9762.5358317] dump Skipping crash dump on recursive panic
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5716764] panic: atastart: channel 0 busy, xfer not possible
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5716764] cpu2: Begin traceback...
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5716764] vpanic() at netbsd:vpanic+0x171
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5716764] panic() at netbsd:panic+0x3c
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5716764] atastart() at netbsd:atastart+0x5c5
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] wd_dumpblocks() at netbsd:wd_dumpblocks+0xfe
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] dk_dump() at netbsd:dk_dump+0x15f
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] dump_header_flush() at netbsd:dump_header_flush+0x5d
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] dump_header_addbytes() at netbsd:dump_header_addbytes+0x40
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] dump_header_addseg() at netbsd:dump_header_addseg+0x29
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] dump_seg_iter() at netbsd:dump_seg_iter+0xe6
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] cpu_dump() at netbsd:cpu_dump+0x76
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5817350] dodumpsys() at netbsd:dodumpsys+0x100
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] dumpsys() at netbsd:dumpsys+0x1d
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] kern_reboot() at netbsd:kern_reboot+0x93
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] vpanic() at netbsd:vpanic+0x17b
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] kern_assert() at netbsd:kern_assert+0x4b
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] process_read_fpregs_xmm() at netbsd:process_read_fpregs_xmm+0x122
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] process_read_fpregs() at netbsd:process_read_fpregs+0x9
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.5917905] proc_regio() at netbsd:proc_regio+0x69
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] do_ptrace() at netbsd:do_ptrace+0xc4f
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] sys_ptrace() at netbsd:sys_ptrace+0x2b
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] syscall() at netbsd:syscall+0x9d
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] --- syscall (number 26) ---
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] netbsd:syscall+0x9d:
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] cpu2: End traceback...
 > Apr 21 11:43:30 netbsdvmcurr /netbsd: [ 9763.6018477] rebooting...
 > 
 >> How-To-Repeat:
 > Run ATF tests
 >> Fix:
 > 
 Last line written in the ATF log was
 
 tc, 0.008192, lib/libc/sys/t_ptrace_wait6, posix_spawn3, passed
 
 which is consistent with "syscall (number 26)" as seen before reboot and 
 which corresponds to ptrace 
 (https://github.com/NetBSD/src/blob/trunk/sys/sys/syscall.h)