Messages in this thread |  | | Date | Sun, 11 Feb 2001 21:17:01 +0100 | From | Olaf Hering <> | Subject | race in autofs / nfs |
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Hi,
there is a race in 2.4.1 and 2.4.2-pre3 in autofs/nfs. When the cwd is on the nfs mounted server (== busy) and you try to reboot the shutdown hangs in "rcautofs stop". I can reproduce it everytime.
I attach a screen log and a decoded sysrq output. It is not related to that killproc, it hangs right now in automount <-> kupdate (with kernel 2.4.1):
kupdate 6 0 0 -1 ?00000000 c307a000 0 current automoun 1525 31480 503680 54 u0176a368 df3e6000 1 current
there is a spinlock message: _spin_lock(c021f6e4) CPU#1 NIP c01b8220 holder: cpu 1 pc E126BF28
c021f6e4 is not in the System.map, but c01b8220 is c01b817c T memparse c01b8200 T atomic_dec_and_lock c01b9a5c t cleanup_proc_rtas
The attached log is kernel 2.4.2-pre3. killproc 1701 1030738 16491808 106 u0178d5c8 c7de6000 0 current automoun 1705 1036120 16577920 54 u0176a368 c7b46000 1 current _spin_lock(c022279c) CPU#1 NIP c01b7c5c holder: cpu 1 pc E126BF28 SysRq: Emergency Sync
_spin_lock(c022279c) CPU#0 NIP c005d920 holder: cpu 1 pc E126BF28 _spin_lock(c022279c) CPU#1 NIP c01b7c5c holder: cpu 1 pc E126BF28
c01b7c5c is again atomic_dec_and_lock and c005d920 is d_lookup.
The system is a 2way RS/6000, 2gig ram.
Linux cantaloupe 2.4.1-SMP #1 SMP Sun Feb 11 13:02:05 GMT 2001 ppc unknown Kernel modules 2.4.1 Gnu C 2.95.2 Gnu Make 3.79.1 Binutils 2.10.0.33 Linux C Library x 1 root root 1499361 Feb 9 02:50 /lib/libc.so.6 Dynamic linker ldd (GNU libc) 2.2 Procps 2.0.7 Mount 2.10q Net-tools 1.57 Kbd 1.02 Sh-utils 2.0 Modules Loaded nfsd autofs4 ipv6
Any ideas what could be wrong?
Gruss Olaf
-- $ man clone
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