Greg,
In 3.4.5, a regression was introduced from commit: ee92389156 "SUNRPC: move per-net operations from svc_destroy()". This regression was actually fixed in a later upstream patch in v3.5-rc1, specifically 4db77695bf5 "LockD: pass service to per-net up and down functions", which means there is no stock kernel.org kernel that exhibits this particular crash. Please add 4db77695bf5 to the 3.4.Y, it should cherry-pick cleanly. Below is the stack trace you can get from lockd initiation crashing if you try to mount a file system with locks when lockd is not running. BUG: unable to handle kernel NULL pointer dereference at 0000011c IP: [<c1208481>] lockd_down_net+0x41/0xb0 *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: Pid: 42, comm: mount Not tainted 3.4.10-WR5.0+snapshot-20120814_standard #26 Bochs Bochs EIP: 0060:[<c1208481>] EFLAGS: 00010282 CPU: 0 EIP is at lockd_down_net+0x41/0xb0 EAX: 00000000 EBX: 00000003 ECX: 00000000 EDX: 00000000 ESI: c1a23540 EDI: d7949708 EBP: d7033da0 ESP: d7033d88 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 8005003b CR2: 0000011c CR3: 1701a000 CR4: 000006d0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Process mount (pid: 42, ti=d7032000 task=d7a2e200 task.ti=d7032000) Stack: c1208993 c181af78 ffffff91 ffffff91 d7af9980 c1a23540 d7033dcc c1208ba7 d79d5500 d7033db8 c11dec06 00000000 d7033dd0 d7949708 d7033df8 00000004 00000003 d7033df0 c120591c c11de15e 00000001 00000000 d79d54e0 d700ac00 Call Trace: [<c1208993>] ? make_socks+0x93/0xa0 [<c1208ba7>] lockd_up+0x207/0x280 [<c11dec06>] ? nfs_mark_client_ready+0x26/0x30 [<c120591c>] nlmclnt_init+0x2c/0x80 [<c11de15e>] ? nfs_get_client+0x4ee/0x580 [<c11dd94c>] nfs_start_lockd+0x9c/0xd0 [<c11def8d>] nfs_create_server+0x1bd/0x3e0 [<c11e95b1>] nfs_fs_mount+0x91/0x3e0 [<c12d131d>] ? ida_get_new_above+0x1ad/0x230 [<c10f70f6>] mount_fs+0x36/0x180 [<c10d9abf>] ? __alloc_percpu+0xf/0x20 [<c110d701>] vfs_kern_mount+0x51/0xc0 [<c110db3e>] do_kern_mount+0x3e/0xe0 [<c110ef69>] do_mount+0x169/0x710 [<c110f62b>] sys_mount+0x6b/0xa0 [<c1662359>] syscall_call+0x7/0xb Code: c0 8b a1 c1 89 c6 e8 6f 8f e8 ff 85 db 8b 86 80 03 00 00 74 5a 3b 18 77 56 8b 7c 98 08 e8 48 a6 e8 ff 85 ff 74 66 a1 cc 8b a1 c1 <8b> 98 1c 01 00 00 8b 07 85 c0 74 3a 83 e8 01 85 c0 89 07 74 12 EIP: [<c1208481>] lockd_down_net+0x41/0xb0 SS:ESP 0068:d7033d88 CR2: 000000000000011c ---[ end trace 4812fcaee13b225d ]--- Thanks, Jason. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
