but will be happy if someone else beats me to it. >> >> I have since found an omission in the restart_addr logic: looking back >> at the October 2004 history of vm_truncate_count, I see that originally >> I designed it to work one way, but hurriedly added a 7/6 redesign when >> vma splitting turned out to leave an ambiguity. ÂI should have updated >> the protection in mremap move at that time, but missed it. >> >> Robert, please try out the patch below (should apply fine to 2.6.35): > > In the beginning Âof Jan (3-4) at earliest I'm afraid, i.e. when I > manage to get to my console-over-rs232 setup. I cannot reproduce it even with the unpatched kernel, cause I get the following oops (3 times out of 3 tries) relatively quickly. Still trying. Entering kdb (current=0xffff88006b525ac0, pid 12468) on processor 1 Oops: (null) due to oops @ 0xffffffff810c2a1b CPU 1 <c> <d>Pid: 12468, comm: iknowthis Not tainted 2.6.37-rc2 #1 0GH911/Precision WorkStation 390 <d>RIP: 0010:[<ffffffff810c2a1b>] [<ffffffff810c2a1b>] next_pidmap+0x4b/0xa0 <d>RSP: 0000:ffff88006bc6fd78 EFLAGS: 00010206 <d>RAX: 001ffffffffd2010 RBX: 001fffff829eee38 RCX: 0000000000000034 <d>RDX: 0000000000001bd7 RSI: 00000000e9009bd6 RDI: ffffffff82a1ce20 <d>RBP: ffff88006bc6fd98 R08: c000000000000000 R09: 4fb0000000000000 <d>R10: 7d80000000000000 R11: 0000000000000000 R12: ffffffff82a1d628 <d>R13: ffffffff82a1ce20 R14: ffff880123768000 R15: ffffffff811d98e0 <d>FS: 0000000000000000(0000) GS:ffff8800cfc40000(0063) knlGS:00000000f74aa6c0 <d>CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b <d>CR2: 000000000808865c CR3: 000000011b1a4000 CR4: 00000000000006e0 <d>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 <d>DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process iknowthis (pid: 12468, threadinfo ffff88006bc6e000, task ffff88006b525ac0) <0>Stack: <c> ffff88006bc6fe78<c> 00000000e9009bd6<c> 0000000000000000<c> ffffffff82a1ce20<c> <c> ffff88006bc6fdc8<c> ffffffff810c2aac<c> ffff880018cfc410<c> ffffffff82a1ce20<c> <c> 00000000e9009bd6<c> ffffffff811d98e0<c> ffff88006bc6fe28<c> ffffffff811f3dab<c> <0>Call Trace: [1]more> Only 'q' or 'Q' are processed at more prompt, input ignored <0> [<ffffffff810c2aac>] find_ge_pid+0x3c/0x50 <0> [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 <0> [<ffffffff811f3dab>] next_tgid+0x3b/0xc0 <0> [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 <0> [<ffffffff811f42ec>] proc_pid_readdir+0x13c/0x1d0 <0> [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 <0> [<ffffffff811f03fa>] proc_root_readdir+0x4a/0x60 <0> [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 <0> [<ffffffff811a58d0>] vfs_readdir+0xc0/0xe0 <0> [<ffffffff811d8435>] compat_sys_old_readdir+0x45/0x70 <0> [<ffffffff8108b023>] ia32_sysret+0x0/0x5 <0>Code: 89 fd 48 c1 e8 0f 48 c1 e0 04 48 8d 5c 07 08 4c 39 e3 73 54 81 e2 ff 7f 00 00 eb 0f eb 02 90 90 48 83 c3 10 31 d2 49 39 dc 76 3d <48> 8b 7b 08 48 85 ff 74 ec 48 63 d2 be 00 80 00 00 e8 6f a4 41 Call Trace: [<ffffffff810c2aac>] find_ge_pid+0x3c/0x50 [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 [<ffffffff811f3dab>] next_tgid+0x3b/0xc0 [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 [<ffffffff811f42ec>] proc_pid_readdir+0x13c/0x1d0 [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 [<ffffffff811f03fa>] proc_root_readdir+0x4a/0x60 [<ffffffff811d98e0>] ? compat_fillonedir+0x0/0xe0 [<ffffffff811a58d0>] vfs_readdir+0xc0/0xe0 [1]more> Only 'q' or 'Q' are processed at more prompt, input ignored [<ffffffff811d8435>] compat_sys_old_readdir+0x45/0x70 [<ffffffff8108b023>] ia32_sysret+0x0/0x5 -- Robert ÅwiÄcki -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href