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Bug 567710 - sys-kernel/hardened-sources causes lockup
Summary: sys-kernel/hardened-sources causes lockup
Status: RESOLVED DUPLICATE of bug 567046
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Hardened (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: The Gentoo Linux Hardened Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-12-07 13:58 UTC by Markus Walter
Modified: 2015-12-09 08:34 UTC (History)
0 users

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Runtime testing required: ---

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Description Markus Walter 2015-12-07 13:58:50 UTC 
On my hardened ~amd64 machine with gcc-5.3.0 I see the following error since circa 4.2.6-r6. Afterwards there are a lot more similar log messages until I reboot the machine. Please advise how I can help with debugging this.

Dec  7 14:42:52 zaphod kernel: PAX: size overflow detected in function try_merge_map /usr/src/linux-4.2.6-hardened-r8/fs/btrfs/extent_map.c:238 cicus.107_102 max, count: 13, decl: block_len; num: 0; context: extent_map;
Dec  7 14:42:52 zaphod kernel: CPU: 1 PID: 2325 Comm: panel-20-action Tainted: G        W       4.2.6-hardened-r8 #1
Dec  7 14:42:52 zaphod kernel: Hardware name:                  /DH77KC, BIOS KCH7710H.86A.0103.2012.1029.1732 10/29/2012
Dec  7 14:42:52 zaphod kernel:  ffffffff96f0a5a5 0000000000000000 ffffffff96ef0e90 ffffc90005e8b7d8
Dec  7 14:42:52 zaphod kernel:  ffffffff96b708aa ffff88041f28dae0 ffffffff96f0a5a5 ffffc90005e8b808
Dec  7 14:42:52 zaphod kernel:  ffffffff9621b034 ffff88035586e120 ffff880407f1fb40 ffff8804048ab950
Dec  7 14:42:52 zaphod kernel: Call Trace:
Dec  7 14:42:52 zaphod kernel:  [<ffffffff96b708aa>] dump_stack+0x45/0x57
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9621b034>] report_size_overflow+0x34/0x40
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964e7785>] try_merge_map+0x205/0x320
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964e7acf>] add_extent_mapping+0x11f/0x1b0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964cfb80>] btrfs_get_extent+0x5e0/0xde0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964f299d>] __do_readpage+0x4bd/0xbe0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964edec1>] ? __set_extent_bit+0x3e1/0x550
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964cf5a0>] ? btrfs_real_readdir+0x6a0/0x6a0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964eba42>] ? btrfs_lookup_ordered_extent+0x52/0xc0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964f32ae>] __extent_read_full_page+0x1ee/0x220
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964cf5a0>] ? btrfs_real_readdir+0x6a0/0x6a0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964cf5a0>] ? btrfs_real_readdir+0x6a0/0x6a0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964ccfd0>] ? inode_tree_add+0x160/0x160
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964f379a>] extent_read_full_page+0x4a/0x70
Dec  7 14:42:52 zaphod kernel:  [<ffffffff961c7d94>] ? lru_cache_add+0x14/0x20
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964ccffb>] btrfs_readpage+0x2b/0x40
Dec  7 14:42:52 zaphod kernel:  [<ffffffff961bb6c3>] do_read_cache_page+0x83/0x1b0
Dec  7 14:42:52 zaphod kernel:  [<ffffffff964ccfd0>] ? inode_tree_add+0x160/0x160
Dec  7 14:42:52 zaphod kernel:  [<ffffffff961bc543>] read_cache_page+0x33/0x40
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9621db6c>] page_getlink.isra.37.constprop.52+0x2c/0x90
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9621dbf6>] page_follow_link_light+0x26/0x40
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9621ee06>] trailing_symlink+0x1e6/0x260
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9621fb52>] path_lookupat+0x72/0x130
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9621fcb0>] filename_lookup+0xa0/0x160
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9622057f>] user_path_at_empty+0x3f/0x50
Dec  7 14:42:52 zaphod kernel:  [<ffffffff9620f1c1>] SyS_access+0xa1/0x210
Dec  7 14:42:52 zaphod kernel:  [<ffffffff96b774d8>] entry_SYSCALL_64_fastpath+0x16/0x82
Comment 1 Alexander Tsoy 2015-12-09 08:22:41 UTC 
It's a dupe of bug #567046
Comment 2 Markus Walter 2015-12-09 08:34:08 UTC 

*** This bug has been marked as a duplicate of bug 567046 ***