https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252375

Lexi Winter <l...@hemlock.eden.le-fay.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|Overcome By Events          |---
             Status|Closed                      |New
                 CC|                            |l...@hemlock.eden.le-fay.or
                   |                            |g

--- Comment #5 from Lexi Winter <l...@hemlock.eden.le-fay.org> ---
i recently saw this on 15.0 as of ~ 1 week ago.

Feb 23 02:10:40 amaryllis syslogd: exiting on signal 15                         
Waiting (max 60 seconds) for system process `vnlru' to stop... done             
Waiting (max 60 seconds) for system process `syncer' to stop...                 
Syncing disks, vnodes remaining... 0 0 done                                     
All buffers synced.                                                             
panic: softdep_waitidle: work added after flush                                 
cpuid = 0                                                                       
time = 1740276653                                                               
KDB: stack backtrace:                                                           
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe004b09a9d0  
vpanic() at vpanic+0x136/frame 0xfffffe004b09ab00                               
panic() at panic+0x43/frame 0xfffffe004b09ab60                                  
softdep_flushfiles() at softdep_flushfiles+0x475/frame 0xfffffe004b09ac00       
ffs_unmount() at ffs_unmount+0x66/frame 0xfffffe004b09ac80                      
dounmount() at dounmount+0x649/frame 0xfffffe004b09acf0                         
vfs_unmountall() at vfs_unmountall+0x6a/frame 0xfffffe004b09ad20                
bufshutdown() at bufshutdown+0x32c/frame 0xfffffe004b09ad70                     
kern_reboot() at kern_reboot+0x703/frame 0xfffffe004b09adb0                     
sys_reboot() at sys_reboot+0x396/frame 0xfffffe004b09ae00                       
amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe004b09af30                 
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe004b09af30      
--- syscall (55, FreeBSD ELF64, reboot), rip = 0x28db3a, rsp = 0x8209651a8, rbp
= 0x820965290 ---
KDB: enter: panic                                                               
[ thread pid 1 tid 100002 ]                                                     
Stopped at      kdb_enter+0x33: movq    $0,0x1052682(%rip)                      
db>                                                                             

unfortunately this VM has no swap space, so i couldn't get a dump, and i
haven't managed to reproduce it, but the problem still seems to be present.

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