Re: kern/60504: lfs_cleanerd can kernel crash on load in lfs_fcntl; lfs_sp == NULL

["Shinichi Doyashiki via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/60504; it has been noted by GNATS.

From: Shinichi Doyashiki <clare%csel.org@localhost>
To: Taylor R Campbell <riastradh%netbsd.org@localhost>, gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/60504: lfs_cleanerd can kernel crash on load in lfs_fcntl;
 lfs_sp == NULL
Date: Sat, 08 Aug 2026 19:47:30 +0900

 I experienced kernel crash while running cvs update on the LFS with the WIP patch.
 
 
 [ 2136.0027704] panic: cpu0: softints stuck for 16 seconds
 [ 2136.0027704] cpu0: Begin traceback...
 [ 2136.0027704] vpanic() at netbsd:vpanic+0x171
 [ 2136.0027704] panic() at netbsd:panic+0x3c
 [ 2136.0027704] heartbeat() at netbsd:heartbeat+0x310
 [ 2136.0027704] hardclock() at netbsd:hardclock+0x89
 [ 2136.0027704] Xresume_lapic_ltimer() at netbsd:Xresume_lapic_ltimer+0x1e
 [ 2136.0027704] --- interrupt ---
 [ 2136.0027704] _kernel_lock() at netbsd:_kernel_lock+0x13e
 [ 2136.0027704] lfs_cluster_work() at netbsd:lfs_cluster_work+0x22
 [ 2136.0027704] workqueue_worker() at netbsd:workqueue_worker+0xf3
 [ 2136.0027704] cpu0: End traceback...
 [ 2136.0027704] dumping to dev 168,1 (offset=336543, size=8346540):
 [ 2136.0027704] dump WARNING: lwp 105 (system softclk/3) flags 0xa0000060: timecounter went backwards from (2136 + 0xb83852b386fac85c/2^64) sec to (2136 + 0x160083cff7f83894/2^64) sec in netbsd:mi_switch+0xde
 [ 2136.0027704] WARNING: lwp 169 (system ioflush) flags 0x20020020: timecounter went backwards from (2136 + 0xb837c827179da464/2^64) sec to (2136 + 0x15ff5fa8acf31ca4/2^64) sec in netbsd:mi_switch+0xde
 [ 2136.0027704] WARNING: lwp 2559 (system lfs_writer) flags 0x20000000: timecounter went backwards from (2136 + 0xb83829994bec390c/2^64) sec to (2136 + 0x16007bbf19626b94/2^64) sec in netbsd:mi_switch+0xde
 [ 2136.0027704] 3023 3022 3021 3020 3019 WARNING: lwp 0 (system swapper): negative runtime: (-1 + 0xbf1fe5405497c9d4/2^64) sec
 [ 2136.0027704] 3018 3017 3016 3015 3014 3013 3012 3011 3010 3009 3008 3007 3006 3005 3004 3003 3002 3001 3000 2999 2998 2997 2996 2995 2994 2993 2992 2991 2990 2989 2988 2987 2986 2985 2984 2983 2982 2981 2980 2979 2978 2977 2976 2975 2974 2973 2972 2971 2970 2969 2968 2967 2966 2965 2964 2963 2962 2961 2960 2959 2958 2957 2956 2955 2954 2953 2952 2951 2950 2949 2948 2947 2946 2945 2944 2943 2942 2941 2940 2939 2938 2937 2936 2935 2934 2933 2932 2931 2930 2929 2928 2927 2926 2925 2924 2923 2922 2921 2920 2919 2918 2917 2916 2915 2914 2913 2912 wddump: device timed out
 [ 2136.0027704] i/o error