Strange console output - scary

[Eirik Øverby]

Hi,

When putting some quite significant stress on the system (namely by  
forwarding about a thousand mails at once through exim, triggering  
spamassassin and clamav scans and stuff), also including swapping and  
loads of processes fighting over the CPUs, I start getting the  
following output on my serial console.
The box seems unresponsive for a while, but does come back once the  
load/swapping lessens.

This is a dual opteron on a Tyan S2882 mainboard, 1GB memory,  
ultra320 scsi disk on the onboard adaptec controller plus a pair of  
SATA drives in gmirror (raid-1) on the onboard SiI controller. Swap  
is on the SCSI drive.

Could this be related to the panic I saw in my earlier messages (5.4- 
panic)?

/Eirik

KDB: stack backtrace:
getdirtybuf() at getdirtybuf+0x1bb
flush_deplist() at flush_deplist+0x57
flush_inodedep_deps() at flush_inodedep_deps+0x89
softdep_sync_metadata() at softdep_sync_metadata+0x66
ffs_fsync() at ffs_fsync+0x315
fsync() at fsync+0x158
syscall() at syscall+0x233
Xfast_syscall() at Xfast_syscall+0xa8
--- syscall (95, FreeBSD ELF64, fsync), rip = 0x801490100, rsp =  
0x7fffffffae08, rbp = 0x5f17b8 ---
KDB: stack backtrace:
getdirtybuf() at getdirtybuf+0x1bb
flush_deplist() at flush_deplist+0x57
flush_inodedep_deps() at flush_inodedep_deps+0x89
softdep_sync_metadata() at softdep_sync_metadata+0x66
ffs_fsync() at ffs_fsync+0x315
fsync() at fsync+0x158
syscall() at syscall+0x233
Xfast_syscall() at Xfast_syscall+0xa8
--- syscall (95, FreeBSD ELF64, fsync), rip = 0x80079c100, rsp =  
0x7fffffffe7b8, rbp = 0x50f070 ---
KDB: stack backtrace:
getdirtybuf() at getdirtybuf+0x1bb
flush_deplist() at flush_deplist+0x57
flush_inodedep_deps() at flush_inodedep_deps+0x89
softdep_sync_metadata() at softdep_sync_metadata+0x66
ffs_fsync() at ffs_fsync+0x315
fsync() at fsync+0x158
syscall() at syscall+0x233
Xfast_syscall() at Xfast_syscall+0xa8
--- syscall (95, FreeBSD ELF64, fsync), rip = 0x801490100, rsp =  
0x7fffffffae08, rbp = 0x5f17b8 ---
Limiting closed port RST response from 472 to 200 packets/sec
KDB: stack backtrace:
getdirtybuf() at getdirtybuf+0x1bb
flush_deplist() at flush_deplist+0x57
flush_inodedep_deps() at flush_inodedep_deps+0x89
softdep_sync_metadata() at softdep_sync_metadata+0x66
ffs_fsync() at ffs_fsync+0x315
fsync() at fsync+0x158
syscall() at syscall+0x233
Xfast_syscall() at Xfast_syscall+0xa8
--- syscall (95, FreeBSD ELF64, fsync), rip = 0x801490100, rsp =  
0x7fffffffd918, rbp = 0x5eb310 ---