Messages in this thread | | | Date | Fri, 30 May 2008 09:54:06 +0400 | From | Alexey Dobriyan <> | Subject | Re: 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160 |
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On Fri, May 09, 2008 at 03:12:38AM -0700, Paul E. McKenney wrote: > On Fri, May 09, 2008 at 01:22:47PM +0400, Alexey Dobriyan wrote: > > On Sun, May 04, 2008 at 11:58:30PM -0700, Paul E. McKenney wrote: > > > On Mon, May 05, 2008 at 09:59:40AM +0400, Alexey Dobriyan wrote: > > > > Workload is build all arm defconfigs and all powerpc defconfigs and > > > > something else in parallel from one source tree using O= and with > > > > empty .ccache on ext2/noatime partition. > > > > > > > > PREEMPT_RCU was again in use to do final check of Jens's patch (see URL) > > > > > > > > Kernel is afa26be86b65a7183ceac29bdf1f51d6fc6932f0 + CFQ fixlet > > > > http://marc.info/?l=linux-kernel&m=120946003120291&w=2 . > > > > > > > > Oops, disassembly and .config (DEBUG_INFO was turned off) below. > > > > > > > > Should we add PREEMPT_RCU to oops reports, BTW? > > > > > > Given that you see it with PREEMPT_RCU, but not classic RCU, that would > > > make sense... > > > > > > I presume that this version of the kernel has the fixes from this thread > > > applied? > > > > > > http://lkml.org/lkml/2008/4/19/85 > > > > I recall two fixes from this thread: list.h one and text_poke() one. And > > they were applied before 2.6.26-rc1. Were there anything else? > > Those are the two I am aware of.
Triggered second time with 2.6.24-rc4.
FWIW, workload was LTP in infinite loop + parallel compiling on 170 configs with make O=../ on ext2 Core 2 Duo, 4G RAM, PREEMPT/PREEMPT_RCU, HZ=1000
> > > > [12617.678557] general protection fault: 0000 [1] PREEMPT SMP DEBUG_PAGEALLOC > > > > [12617.678646] CPU 1 > > > > [12617.678695] Modules linked in: ext2 nf_conntrack_irc xt_state iptable_filter ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables usblp uhci_hcd ehci_hcd usbcore sr_mod cdrom > > > > [12617.678953] Pid: 15988, comm: cc1 Not tainted 2.6.26-rc1-afa26be86b65a7183ceac29bdf1f51d6fc6932f0 #3 > > > > [12617.679064] RIP: 0010:[<ffffffff802a3cdc>] [<ffffffff802a3cdc>] __d_lookup+0x8c/0x160 > > > > [12617.679171] RSP: 0018:ffff810072f3fbc8 EFLAGS: 00010202 > > > > [12617.679372] RAX: 6b6b6b6b6b6b6b6b RBX: 6b6b6b6b6b6b6b6b RCX: 0000000000000013 > > > > [12617.679441] RDX: ffff81000100c128 RSI: 0000000000000000 RDI: ffff8101233c1140 > > > > [12617.679511] RBP: ffff810072f3fc18 R08: 0000000000000000 R09: ffff8100695cc200 > > > > [12617.679581] R10: 0000000000000000 R11: 0000000000000000 R12: 6b6b6b6b6b6b6b2b > > > > [12617.679650] R13: 0000000071bf92cd R14: ffff810129d4a138 R15: ffff810072f3fcc8 > > > > [12617.679720] FS: 00002ab45130a6f0(0000) GS:ffff81017fc44320(0000) knlGS:0000000000000000 > > > > [12617.679827] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > > > [12617.679890] CR2: 00002b3818aba000 CR3: 000000005d00d000 CR4: 0000000000000660 > > > > [12617.679961] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > > > [12617.680030] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > > > > [12617.680100] Process cc1 (pid: 15988, threadinfo ffff810072f3e000, task ffff8101233c1140) > > > > [12617.680206] Stack: ffff81000100d218 0000000000000000 0000000000000007 00000007233c16e0 > > > > [12617.680322] ffff8100695cc200 ffff8100695cc208 ffff810072f3fcc8 ffff810072f3fe48 > > > > [12617.680460] ffff810072f3fcc8 ffff810072f3fcd8 ffff810072f3fc68 ffffffff802994f5 > > > > [12617.680536] Call Trace: > > > > [12617.680626] [<ffffffff802994f5>] do_lookup+0x35/0x200 > > > > [12617.680690] [<ffffffff8029a6e3>] __link_path_walk+0x163/0xe90 > > > > [12617.680756] [<ffffffff80255d85>] ? __lock_acquire+0x9c5/0x1080 > > > > [12617.680824] [<ffffffff8029b472>] path_walk+0x62/0xd0 > > > > [12617.680886] [<ffffffff8029b70d>] do_path_lookup+0x8d/0x1d0 > > > > [12617.680950] [<ffffffff8029c647>] __path_lookup_intent_open+0x67/0xc0 > > > > [12617.681019] [<ffffffff8029c72c>] path_lookup_open+0xc/0x10 > > > > [12617.681083] [<ffffffff8029ca48>] do_filp_open+0x98/0x8d0 > > > > [12617.681147] [<ffffffff80255d85>] ? __lock_acquire+0x9c5/0x1080 > > > > [12617.681215] [<ffffffff8028eaa3>] ? get_unused_fd_flags+0x103/0x130 > > > > [12617.681283] [<ffffffff8028eb28>] do_sys_open+0x58/0xb0 > > > > [12617.681346] [<ffffffff8028ebab>] sys_open+0x1b/0x20 > > > > [12617.681407] [<ffffffff8020b5fb>] system_call_after_swapgs+0x7b/0x80 > > > > [12617.681474] > > > > [12617.681519] > > > > [12617.681563] Code: 4d 33 00 e8 37 18 fc ff 48 8b 03 48 89 c3 8b 45 cc 48 85 db 48 89 45 c0 75 0d eb 4c 0f 1f 00 48 8b 1b 48 85 db 74 41 4c 8d 63 c0 <48> 8b 03 45 3b 6c 24 58 0f 18 08 75 e7 4d 3b 74 24 50 75 e0 49 > > > > [12617.682111] RIP [<ffffffff802a3cdc>] __d_lookup+0x8c/0x160 > > > > [12617.682176] RSP <ffff810072f3fbc8> > > > > [12617.682493] ---[ end trace 0b3e824669c14a48 ]--- > >
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