Hi,
Got the following oopsen just now from 2.6.23-rc1-git10 on a 2
processor Opteron with 2GB RAM. System is running 64bit Fedora Core 6.
nfsd is exporting directories from a XFS filesystem on top a software
RAID 5 array comprising 3 x 250GB SATA disks using the sata_sil driver.
Amongst other things, users (about 12) home directories are
automounted from it.
Some problems seem to start when I was experimenting with the
stripe_cache_size of the md array. People could no longer run some apps
and having general NFS issues. IIRC I had dropped the stripe_cache_size
down from 8192 to 768 then I attempted to restart nfsd
via /etc/rc.d/init.d/nfsd restart
I then got the Oopses and the machine locked up needing a power cycle.
Aug 2 10:15:55 thor mountd[30048]: Caught signal 15, un-registering and exiting.
Aug 2 10:15:55 thor nfsd[16390]: nfssvc: Setting version failed: errno 16 (Device or resource busy)
Aug 2 10:15:56 thor kernel: lockd_down: lockd failed to exit, clearing pid
Aug 2 10:15:56 thor kernel: nfsd: last server has exited
Aug 2 10:15:56 thor kernel: nfsd: unexporting all filesystems
Aug 2 10:15:56 thor kernel: ------------[ cut here ]------------
Aug 2 10:15:56 thor kernel: kernel BUG at /home/andrew/src/linux-2.6/net/sunrpc/svc.c:488!
Aug 2 10:15:56 thor kernel: invalid opcode: 0000 [1] SMP
Aug 2 10:15:56 thor kernel: CPU 0
Aug 2 10:15:56 thor kernel: Pid: 30039, comm: nfsd Not tainted 2.6.23-rc1-git10 #28
Aug 2 10:15:56 thor kernel: RIP: 0010:[<ffffffff804b9bed>] [<ffffffff804b9bed>] svc_destroy+0x1bd/0x1d0
Aug 2 10:15:56 thor kernel: RSP: 0018:ffff81007a149ee0 EFLAGS: 00010212
Aug 2 10:15:56 thor kernel: RAX: ffff81006fd4f4a8 RBX: ffff81006fd4f498 RCX: ffff81000000c000
Aug 2 10:15:56 thor kernel: RDX: ffff81006fd4f498 RSI: 000000000000004c RDI: ffff81006fd4f498
Aug 2 10:15:56 thor kernel: RBP: ffff81006fd4f4b8 R08: 9018000000000000 R09: 8000000000000000
Aug 2 10:15:56 thor kernel: R10: 0000000000000000 R11: ffffffff80453990 R12: ffff81006fd4f4a8
Aug 2 10:15:56 thor kernel: R13: ffff81006fd4f480 R14: ffff81006fd4f480 R15: ffffffff802dc000
Aug 2 10:15:56 thor kernel: FS: 00002affe30536e0(0000) GS:ffffffff805be000(0000) knlGS:0000000000000000
Aug 2 10:15:56 thor kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Aug 2 10:15:56 thor kernel: CR2: 000000345ce03080 CR3: 000000006fd65000 CR4: 00000000000006e0
Aug 2 10:15:56 thor kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 2 10:15:56 thor kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Aug 2 10:15:56 thor kernel: Process nfsd (pid: 30039, threadinfo ffff81007a148000, task ffff810062fe77b0)
Aug 2 10:15:56 thor kernel: Stack: ffff810062fe77b0 000000000000001e ffff81007a0c2000 ffff81007a149f20
Aug 2 10:15:56 thor kernel: ffff810070eedf80 ffffffff802dc268 fffffffffffffeff 6e692e6c6363702e
Aug 2 10:15:56 thor kernel: fffffffffffffef8 ffff810062fe77b0 ffff810070eedf84 0000000000000000
Aug 2 10:15:56 thor kernel: Call Trace:
Aug 2 10:15:56 thor kernel: [<ffffffff802dc268>] nfsd+0x268/0x2d0
Aug 2 10:15:56 thor kernel: [<ffffffff8020ca28>] child_rip+0xa/0x12
Aug 2 10:15:56 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:15:56 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:15:56 thor kernel: [<ffffffff8020ca1e>] child_rip+0x0/0x12
Aug 2 10:15:56 thor kernel:
Aug 2 10:15:56 thor kernel:
Aug 2 10:15:56 thor kernel: Code: 0f 0b eb fe 0f 1f 80 00 00 00 00 0f 1f 84 00 00 00 00 00 41
Aug 2 10:15:56 thor kernel: RIP [<ffffffff804b9bed>] svc_destroy+0x1bd/0x1d0
Aug 2 10:15:56 thor kernel: RSP <ffff81007a149ee0>
Aug 2 10:16:17 thor kernel: general protection fault: 0000 [2] SMP
Aug 2 10:16:17 thor kernel: CPU 0
Aug 2 10:16:17 thor kernel: Pid: 16406, comm: nfsd Tainted: G D 2.6.23-rc1-git10 #28
Aug 2 10:16:17 thor kernel: RIP: 0010:[<ffffffff802e011e>] [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:16:17 thor kernel: RSP: 0018:ffff8100496ffd60 EFLAGS: 00010202
Aug 2 10:16:17 thor kernel: RAX: 000000003b5f0767 RBX: 0000000000000100 RCX: ffff81007a579340
Aug 2 10:16:17 thor kernel: RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff80649f48
Aug 2 10:16:17 thor kernel: RBP: ffffffff80649f40 R08: ffff8100149d0990 R09: 0000000000000007
Aug 2 10:16:17 thor kernel: R10: 000000005245544e R11: 0000000000000001 R12: 495f594157455441
Aug 2 10:16:17 thor kernel: R13: 0000000018328d3e R14: 0000000000000004 R15: ffff810065dc66c0
Aug 2 10:16:17 thor kernel: FS: 00002b83155a86e0(0000) GS:ffffffff805be000(0000) knlGS:0000000000000000
Aug 2 10:16:17 thor kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Aug 2 10:16:17 thor kernel: CR2: 000000345c495890 CR3: 000000007b2c1000 CR4: 00000000000006e0
Aug 2 10:16:17 thor kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 2 10:16:17 thor kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Aug 2 10:16:17 thor kernel: Process nfsd (pid: 16406, threadinfo ffff8100496fe000, task ffff81007e1310c0)
Aug 2 10:16:17 thor kernel: Stack: ffff8100704f9b68 000000078034eee8 ffff8100149d0990 ffff8100149d0000
Aug 2 10:16:17 thor kernel: 009000005ed85080 0000000000030000 ffff81007c83e008 ffff81005ed85080
Aug 2 10:16:17 thor kernel: 0000000000000000 ffff8100496ffe00 0000000000030000 0000000000000000
Aug 2 10:16:17 thor kernel: Call Trace:
Aug 2 10:16:17 thor kernel: [<ffffffff802e0972>] nfsd_read+0xe2/0x100
Aug 2 10:16:17 thor kernel: [<ffffffff804bb710>] svc_sock_enqueue+0x80/0x340
Aug 2 10:16:17 thor kernel: [<ffffffff802e81ad>] nfsd3_proc_read+0xfd/0x1a0
Aug 2 10:16:17 thor kernel: [<ffffffff802dba71>] nfsd_dispatch+0xb1/0x250
Aug 2 10:16:17 thor kernel: [<ffffffff804baa56>] svc_process+0x476/0x7a0
Aug 2 10:16:17 thor kernel: [<ffffffff804c9182>] __down_read+0x12/0xb0
Aug 2 10:16:17 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:17 thor kernel: [<ffffffff802dc190>] nfsd+0x190/0x2d0
Aug 2 10:16:17 thor kernel: [<ffffffff8020ca28>] child_rip+0xa/0x12
Aug 2 10:16:17 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:17 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:17 thor kernel: [<ffffffff8020ca1e>] child_rip+0x0/0x12
Aug 2 10:16:17 thor kernel:
Aug 2 10:16:17 thor kernel:
Aug 2 10:16:17 thor kernel: Code: 4d 3b 6c 24 10 75 db 8b 44 24 24 41 3b 44 24 18 75 d0 48 39
Aug 2 10:16:17 thor kernel: RIP [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:16:17 thor kernel: RSP <ffff8100496ffd60>
Aug 2 10:16:28 thor kernel: general protection fault: 0000 [3] SMP
Aug 2 10:16:28 thor kernel: CPU 1
Aug 2 10:16:28 thor kernel: Pid: 16402, comm: nfsd Tainted: G D 2.6.23-rc1-git10 #28
Aug 2 10:16:28 thor kernel: RIP: 0010:[<ffffffff802e011e>] [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:16:28 thor kernel: RSP: 0018:ffff810070891d60 EFLAGS: 00010202
Aug 2 10:16:28 thor kernel: RAX: 00000000954783fd RBX: 0000000000000240 RCX: ffff81007a5797b8
Aug 2 10:16:28 thor kernel: RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff8064a088
Aug 2 10:16:28 thor kernel: RBP: ffffffff8064a080 R08: ffff8100628e0990 R09: 0000000000000001
Aug 2 10:16:28 thor kernel: R10: 00000000203a2020 R11: 0000000000000001 R12: 2020202020202044
Aug 2 10:16:28 thor kernel: R13: 0000000018752c1c R14: 0000000000000009 R15: ffff81004f3ca4c0
Aug 2 10:16:28 thor kernel: FS: 00002b83155a86e0(0000) GS:ffff81000119dbc0(0000) knlGS:0000000000000000
Aug 2 10:16:28 thor kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Aug 2 10:16:28 thor kernel: CR2: 0000000000616e08 CR3: 000000007ac39000 CR4: 00000000000006e0
Aug 2 10:16:28 thor kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 2 10:16:28 thor kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Aug 2 10:16:28 thor kernel: Process nfsd (pid: 16402, threadinfo ffff810070890000, task ffff81007ac90830)
Aug 2 10:16:28 thor kernel: Stack: ffff81001f5ee928 000000018034eee8 ffff8100628e0990 ffff8100628e0000
Aug 2 10:16:28 thor kernel: 0090000063f1aae8 0000000000000000 ffff810070bc9c08 ffff810063f1aae8
Aug 2 10:16:28 thor kernel: 0000000000000000 ffff810070891e00 0000000000000000 0000000000000000
Aug 2 10:16:28 thor kernel: Call Trace:
Aug 2 10:16:28 thor kernel: [<ffffffff802e0972>] nfsd_read+0xe2/0x100
Aug 2 10:16:28 thor kernel: [<ffffffff804bb710>] svc_sock_enqueue+0x80/0x340
Aug 2 10:16:28 thor kernel: [<ffffffff802e81ad>] nfsd3_proc_read+0xfd/0x1a0
Aug 2 10:16:28 thor kernel: [<ffffffff802dba71>] nfsd_dispatch+0xb1/0x250
Aug 2 10:16:28 thor kernel: [<ffffffff804baa56>] svc_process+0x476/0x7a0
Aug 2 10:16:28 thor kernel: [<ffffffff804c9182>] __down_read+0x12/0xb0
Aug 2 10:16:28 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:28 thor kernel: [<ffffffff802dc190>] nfsd+0x190/0x2d0
Aug 2 10:16:28 thor kernel: [<ffffffff8020ca28>] child_rip+0xa/0x12
Aug 2 10:16:28 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:28 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:28 thor kernel: [<ffffffff8020ca1e>] child_rip+0x0/0x12
Aug 2 10:16:29 thor kernel:
Aug 2 10:16:29 thor kernel:
Aug 2 10:16:29 thor kernel: Code: 4d 3b 6c 24 10 75 db 8b 44 24 24 41 3b 44 24 18 75 d0 48 39
Aug 2 10:16:29 thor kernel: RIP [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:16:29 thor kernel: RSP <ffff810070891d60>
Aug 2 10:16:58 thor kernel: general protection fault: 0000 [4] SMP
Aug 2 10:16:58 thor kernel: CPU 0
Aug 2 10:16:58 thor kernel: Pid: 16401, comm: nfsd Tainted: G D 2.6.23-rc1-git10 #28
Aug 2 10:16:58 thor kernel: RIP: 0010:[<ffffffff802e011e>] [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:16:58 thor kernel: RSP: 0018:ffff810070a4dd60 EFLAGS: 00010202
Aug 2 10:16:58 thor kernel: RAX: 0000000031e26a3c RBX: 00000000000003c0 RCX: ffff81007a579c98
Aug 2 10:16:58 thor kernel: RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff8064a208
Aug 2 10:16:58 thor kernel: RBP: ffffffff8064a200 R08: ffff81006e75c990 R09: 0000000000000005
Aug 2 10:16:58 thor kernel: R10: 00000000736d6567 R11: 0000000000000001 R12: 2f382e312f736d65
Aug 2 10:16:58 thor kernel: R13: 0000000031b7ac4f R14: 000000000000000f R15: ffff81003cb0d480
Aug 2 10:16:58 thor kernel: FS: 00002b83155a86e0(0000) GS:ffffffff805be000(0000) knlGS:0000000000000000
Aug 2 10:16:58 thor kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Aug 2 10:16:58 thor kernel: CR2: 000000345c495890 CR3: 000000007b2c1000 CR4: 00000000000006e0
Aug 2 10:16:58 thor kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 2 10:16:58 thor kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Aug 2 10:16:58 thor kernel: Process nfsd (pid: 16401, threadinfo ffff810070a4c000, task ffff81002a3b0040)
Aug 2 10:16:58 thor kernel: Stack: ffff81007a79d268 000000058034eee8 ffff81006e75c990 ffff81006e75c000
Aug 2 10:16:58 thor kernel: 00900000644a5700 0000000000000000 ffff810070472808 ffff8100644a5700
Aug 2 10:16:58 thor kernel: 0000000000000000 ffff810070a4de00 0000000000000000 0000000000000000
Aug 2 10:16:58 thor kernel: Call Trace:
Aug 2 10:16:58 thor kernel: [<ffffffff802e0972>] nfsd_read+0xe2/0x100
Aug 2 10:16:58 thor kernel: [<ffffffff804bb710>] svc_sock_enqueue+0x80/0x340
Aug 2 10:16:58 thor kernel: [<ffffffff802e81ad>] nfsd3_proc_read+0xfd/0x1a0
Aug 2 10:16:58 thor kernel: [<ffffffff802dba71>] nfsd_dispatch+0xb1/0x250
Aug 2 10:16:58 thor kernel: [<ffffffff804baa56>] svc_process+0x476/0x7a0
Aug 2 10:16:58 thor kernel: [<ffffffff804c9182>] __down_read+0x12/0xb0
Aug 2 10:16:58 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:58 thor kernel: [<ffffffff802dc190>] nfsd+0x190/0x2d0
Aug 2 10:16:58 thor kernel: [<ffffffff8020ca28>] child_rip+0xa/0x12
Aug 2 10:16:58 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:58 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:16:58 thor kernel: [<ffffffff8020ca1e>] child_rip+0x0/0x12
Aug 2 10:16:58 thor kernel:
Aug 2 10:16:58 thor kernel:
Aug 2 10:16:58 thor kernel: Code: 4d 3b 6c 24 10 75 db 8b 44 24 24 41 3b 44 24 18 75 d0 48 39
Aug 2 10:16:58 thor kernel: RIP [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:16:58 thor kernel: RSP <ffff810070a4dd60>
Aug 2 10:17:00 thor kernel: general protection fault: 0000 [5] SMP
Aug 2 10:17:00 thor kernel: CPU 0
Aug 2 10:17:00 thor kernel: Pid: 16403, comm: nfsd Tainted: G D 2.6.23-rc1-git10 #28
Aug 2 10:17:00 thor kernel: RIP: 0010:[<ffffffff802e011e>] [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:17:00 thor kernel: RSP: 0018:ffff810070d13d60 EFLAGS: 00010202
Aug 2 10:17:00 thor kernel: RAX: 00000000e74fcb75 RBX: 0000000000000140 RCX: ffff81007a579410
Aug 2 10:17:00 thor kernel: RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff80649f88
Aug 2 10:17:00 thor kernel: RBP: ffffffff80649f80 R08: ffff8100704d0990 R09: 0000000000000001
Aug 2 10:17:00 thor kernel: R10: 00000000372e303d R11: 0000000000000001 R12: 713b2a2c372e303d
Aug 2 10:17:00 thor kernel: R13: 0000000059233474 R14: 0000000000000005 R15: ffff81003cb0d580
Aug 2 10:17:00 thor kernel: FS: 00002b83155a86e0(0000) GS:ffffffff805be000(0000) knlGS:0000000000000000
Aug 2 10:17:00 thor kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Aug 2 10:17:00 thor kernel: CR2: 0000000000616e08 CR3: 000000007ac39000 CR4: 00000000000006e0
Aug 2 10:17:00 thor kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Aug 2 10:17:00 thor kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Aug 2 10:17:00 thor kernel: Process nfsd (pid: 16403, threadinfo ffff810070d12000, task ffff81007e012080)
Aug 2 10:17:00 thor kernel: Stack: ffff81003e5a3028 000000018034eee8 ffff8100704d0990 ffff8100704d0000
Aug 2 10:17:00 thor kernel: 0090000053a155f8 0000000000001000 ffff810070e64808 ffff810053a155f8
Aug 2 10:17:00 thor kernel: 0000000000000000 ffff810070d13e00 0000000000001000 0000000000000000
Aug 2 10:17:00 thor kernel: Call Trace:
Aug 2 10:17:00 thor kernel: [<ffffffff802e0972>] nfsd_read+0xe2/0x100
Aug 2 10:17:00 thor kernel: [<ffffffff802e81ad>] nfsd3_proc_read+0xfd/0x1a0
Aug 2 10:17:00 thor kernel: [<ffffffff802dba71>] nfsd_dispatch+0xb1/0x250
Aug 2 10:17:00 thor kernel: [<ffffffff804baa56>] svc_process+0x476/0x7a0
Aug 2 10:17:00 thor kernel: [<ffffffff804c9182>] __down_read+0x12/0xb0
Aug 2 10:17:00 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:17:00 thor kernel: [<ffffffff802dc190>] nfsd+0x190/0x2d0
Aug 2 10:17:00 thor kernel: [<ffffffff8020ca28>] child_rip+0xa/0x12
Aug 2 10:17:00 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:17:00 thor kernel: [<ffffffff802dc000>] nfsd+0x0/0x2d0
Aug 2 10:17:00 thor kernel: [<ffffffff8020ca1e>] child_rip+0x0/0x12
Aug 2 10:17:00 thor kernel:
Aug 2 10:17:00 thor kernel:
Aug 2 10:17:00 thor kernel: Code: 4d 3b 6c 24 10 75 db 8b 44 24 24 41 3b 44 24 18 75 d0 48 39
Aug 2 10:17:00 thor kernel: RIP [<ffffffff802e011e>] nfsd_vfs_read+0x13e/0x450
Aug 2 10:17:00 thor kernel: RSP <ffff810070d13d60>
Cheers,
Andrew
On Thursday August 2, [email protected] wrote:
> Hi,
>
> Got the following oopsen just now from 2.6.23-rc1-git10 on a 2
> processor Opteron with 2GB RAM. System is running 64bit Fedora Core 6.
>
> nfsd is exporting directories from a XFS filesystem on top a software
> RAID 5 array comprising 3 x 250GB SATA disks using the sata_sil driver.
>
> Amongst other things, users (about 12) home directories are
> automounted from it.
>
> Some problems seem to start when I was experimenting with the
> stripe_cache_size of the md array. People could no longer run some apps
> and having general NFS issues. IIRC I had dropped the stripe_cache_size
> down from 8192 to 768 then I attempted to restart nfsd
> via /etc/rc.d/init.d/nfsd restart
>
> I then got the Oopses and the machine locked up needing a power cycle.
>
>
> Aug 2 10:15:55 thor mountd[30048]: Caught signal 15, un-registering and exiting.
> Aug 2 10:15:55 thor nfsd[16390]: nfssvc: Setting version failed: errno 16 (Device or resource busy)
> Aug 2 10:15:56 thor kernel: lockd_down: lockd failed to exit, clearing pid
> Aug 2 10:15:56 thor kernel: nfsd: last server has exited
> Aug 2 10:15:56 thor kernel: nfsd: unexporting all filesystems
> Aug 2 10:15:56 thor kernel: ------------[ cut here ]------------
> Aug 2 10:15:56 thor kernel: kernel BUG at /home/andrew/src/linux-2.6/net/sunrpc/svc.c:488!
It seems you have found a race between shutting down and starting up
nfsd.
You md array was probably going very slowly due to playing with
stripe_cache_size, and that stretched things out long enough to loose
the race.
NFSD is shut down by something similar to
killall nfsd
which sends signals to all the threads, but doesn't wait for them to
exit.
The first line in the log is mountd exiting. nfsd should have all
been signalled at the same time.
The second line comes from the nfsd program trying to start up the
nfsd threads again, and getting an error because there were some
already running.
The third is a similar issue with lockd.
The 4th and 5th show the last thread exiting. Only it isn't really
the last thread. By this stage some more nfsd threads have started
up. There was probably a backlog of requests as things were running
slowly so as soon as a new nfsd thread was started, it accepted a
connection and created a new temporary socket. This would have been
after the thread that thought it was the last thread, thought it had
closed the last temp socket.
This caused the BUG.
As part of shutting down, the thread that thought it was last cleared
out the read-ahead info cache. When the new threads tried to use it,
they all suffered general protection faults.
So clearly we need some proper locking around thread start-up and
shutdown. We had previous relied on lock_kernel, but that isn't
really good enough for this. I'll try to figure out the best way to
fix it. Meanwhile, I doubt the problem will recur.
Thanks for the report.
NeilBrown
On Fri, 3 Aug 2007 13:53:39 +1000, Neil Brown wrote:
[snip]
> So clearly we need some proper locking around thread start-up and
> shutdown. We had previous relied on lock_kernel, but that isn't
> really good enough for this. I'll try to figure out the best way to
> fix it. Meanwhile, I doubt the problem will recur.
>
> Thanks for the report.
Thanks for the explanation!
> NeilBrown
Andrew