From mboxrd@z Thu Jan 1 00:00:00 1970 From: Edward Shishkin Subject: Re: [BUG] on mount with reiser4-for-4.8 Date: Sun, 08 Jan 2017 00:51:05 +0200 Message-ID: <587170D9.1090906@gmail.com> References: <5855B20D.6020304@gmail.com> <585684AA.3010306@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-transfer-encoding; bh=LezhkJVMtwgqVNxryyKy6iCKrN7l43+vyj9d2pQ+1k8=; b=BcSBUqHBG+9zEBRn/FdD9nNNBvhRYM1RNuq32BrlgdscFeRSSF2oAy/At24rrxPKWK L+6z4uZt3MSzJYUBNcUYe2nEWwUzefT9nWHult+Dkhl71ncLjM5I9MQiLf/UccS5ss2y LWAEW++pDjCczXGKWRC+QlzS8KOXbyzpc9uZfiIQkiL1KTygw1pH8nZmfkMmb1sxmacm N6kXmj1io+OafvAT9WbiimM9l8aVs1uDN2vSHf7wjxAUugw4pmk3iZ2AqAOjoXBr6WiE hDnQoWN6FNCW4usPrVplX32U0IG0knTLsWX/IdcsU7CfK5GufyyIkxkPAhx4ClEnHrE3 wR6w== In-Reply-To: Sender: reiserfs-devel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="utf-8"; format="flowed" To: =?UTF-8?B?RHXFoWFuIMSMb2xpxIc=?= Cc: reiserfs-devel A deep dive to the page allocator is needed to find out why the warning (not simply regular ENOMEM). Edward. On 01/06/2017 05:37 PM, Dušan Čolić wrote: > On Sun, Dec 25, 2016 at 4:32 PM, Dušan Čolić wrote: >> On Sat, Dec 24, 2016 at 9:48 AM, Dušan Čolić wrote: >>> On Sun, Dec 18, 2016 at 2:46 PM, Dušan Čolić wrote: >>>> That was it, no more BUG on mount. >>>> >>> I spoke prematurely. >>> >>> Looks like I had 2 different BUGs on mount: >>> 1. BUG when mounting partition with old disk format - that was solved >>> with 4.8.1 patch >>> 2. BUG when mounting dismounted partition - this one is not solved >>> >> When I I get this BUG I do: >> echo 1 > /proc/sys/vm/drop_caches >> >> and everything works OK again. >> > With echo 1 > /proc/sys/vm/drop_caches added before mount to scripts > that I run daily on R4 partitions I had no occurence of this bug and > before I had it every day. > > >>> When partitions are mounted on boot they mount OK, but when system >>> finishes booting when I try to mount them I get this BUG: >>> >>> >>> Dec 24 09:41:21 krshina3 kernel: reiser4: md127: found disk format 4.0.1. >>> Dec 24 09:41:21 krshina3 kernel: mount: page allocation failure: >>> order:5, mode:0x26040c0(GFP_KERNEL|__GFP_COMP|__GFP_NOTRACK) >>> Dec 24 09:41:21 krshina3 kernel: CPU: 0 PID: 3859 Comm: mount Not >>> tainted 4.8.11-gentoo #5 >>> Dec 24 09:41:21 krshina3 kernel: Hardware name: Gigabyte Technology >>> Co., Ltd. To be filled by O.E.M./B75-D3V, BIOS F5 07/04/2012 >>> Dec 24 09:41:21 krshina3 kernel: 0000000000400000 ffff88007d0379b0 >>> ffffffff814241c5 0000000000000005 >>> Dec 24 09:41:21 krshina3 kernel: 0000000000000000 ffff88007d037a40 >>> ffffffff811ab42a 026040c07d0379f0 >>> Dec 24 09:41:21 krshina3 kernel: 0000000000000202 0000000000000004 >>> 00000040026040c0 ffff88007d037ad0 >>> Dec 24 09:41:21 krshina3 kernel: Call Trace: >>> Dec 24 09:41:21 krshina3 kernel: [] dump_stack+0x4d/0x68 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> warn_alloc_failed+0xba/0x160 >>> Dec 24 09:41:21 krshina3 kernel: [] ? >>> get_page_from_freelist+0x143/0xcf0 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> __alloc_pages_nodemask+0x2f3/0xd40 >>> Dec 24 09:41:21 krshina3 kernel: [] ? >>> kmemcheck_pte_lookup+0x28/0x60 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> cache_alloc_refill+0xed/0x6a0 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> kmem_cache_alloc+0xf9/0x110 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> znodes_tree_init+0x5f/0x210 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> reiser4_init_tree+0x8e/0x150 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> init_format_format40+0x345/0x790 >>> Dec 24 09:41:21 krshina3 kernel: [] ? >>> unlock_new_inode+0x64/0xa0 >>> Dec 24 09:41:21 krshina3 kernel: [] fill_super+0x14a/0x300 >>> Dec 24 09:41:21 krshina3 kernel: [] mount_bdev+0x1bf/0x200 >>> Dec 24 09:41:21 krshina3 kernel: [] ? reiser4_mount+0x20/0x20 >>> Dec 24 09:41:21 krshina3 kernel: [] reiser4_mount+0x10/0x20 >>> Dec 24 09:41:21 krshina3 kernel: [] mount_fs+0x2e/0xe0 >>> Dec 24 09:41:21 krshina3 kernel: [] vfs_kern_mount+0x66/0x190 >>> Dec 24 09:41:21 krshina3 kernel: [] do_mount+0x1d2/0x1080 >>> Dec 24 09:41:21 krshina3 kernel: [] ? >>> copy_mount_options+0x111/0x220 >>> Dec 24 09:41:21 krshina3 kernel: [] ? >>> copy_mount_options+0xfa/0x220 >>> Dec 24 09:41:21 krshina3 kernel: [] SyS_mount+0x66/0xb0 >>> Dec 24 09:41:21 krshina3 kernel: [] >>> entry_SYSCALL_64_fastpath+0x13/0x8f >>> Dec 24 09:41:21 krshina3 kernel: Mem-Info: >>> Dec 24 09:41:21 krshina3 kernel: active_anon:453454 >>> inactive_anon:113498 isolated_anon:0\x0a active_file:189238 >>> inactive_file:800785 isolated_file:0\x0a unevictable:1866 dirty:1092 >>> writeback:0 unstable:0\x0a slab_reclaimable:55782 >>> slab_unreclaimable:60397\x0a mapped:20308 shmem:11803 pagetables:2738 >>> bounce:0\x0a free:13271 free_pcp:0 free_cma:0 >>> Dec 24 09:41:21 krshina3 kernel: Node 0 active_anon:1813816kB >>> inactive_anon:453992kB active_file:756952kB inactive_file:3203140kB >>> unevictable:7464kB isolated(anon):0kB isolated(file):0kB >>> mapped:81232kB dirty:4368kB writeback:0kB shmem:47212kB >>> writeback_tmp:0kB unstable:0kB pages_scanned:0 all_unreclaimable? no >>> Dec 24 09:41:21 krshina3 kernel: DMA free:15896kB min:24kB low:36kB >>> high:48kB active_anon:0kB inactive_anon:0kB active_file:0kB >>> inactive_file:0kB unevictable:0kB writepending:0kB present:15984kB >>> managed:15900kB mlocked:0kB slab_reclaimable:0kB >>> slab_unreclaimable:4kB kernel_stack:0kB pagetables:0kB bounce:0kB >>> free_pcp:0kB local_pcp:0kB free_cma:0kB >>> Dec 24 09:41:21 krshina3 kernel: lowmem_reserve[]: 0 3191 6627 6627 >>> Dec 24 09:41:21 krshina3 kernel: DMA32 free:22044kB min:5012kB >>> low:8280kB high:11548kB active_anon:810196kB inactive_anon:351420kB >>> active_file:172284kB inactive_file:1693924kB unevictable:0kB >>> writepending:2036kB present:3360704kB managed:3272764kB mlocked:0kB >>> slab_reclaimable:85100kB slab_unreclaimable:120576kB >>> kernel_stack:416kB pagetables:3108kB bounce:0kB free_pcp:0kB >>> local_pcp:0kB free_cma:0kB >>> Dec 24 09:41:21 krshina3 kernel: lowmem_reserve[]: 0 0 3435 3435 >>> Dec 24 09:41:21 krshina3 kernel: Normal free:15144kB min:5392kB >>> low:8908kB high:12424kB active_anon:1003620kB inactive_anon:102572kB >>> active_file:584668kB inactive_file:1509216kB unevictable:7464kB >>> writepending:2332kB present:4691968kB managed:3517764kB mlocked:7464kB >>> slab_reclaimable:138028kB slab_unreclaimable:121008kB >>> kernel_stack:4608kB pagetables:7844kB bounce:0kB free_pcp:0kB >>> local_pcp:0kB free_cma:0kB >>> Dec 24 09:41:21 krshina3 kernel: lowmem_reserve[]: 0 0 0 0 >>> Dec 24 09:41:21 krshina3 kernel: DMA: 2*4kB (U) 0*8kB 1*16kB (U) >>> 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) >>> 1*2048kB (M) 3*4096kB (M) = 15896kB >>> Dec 24 09:41:21 krshina3 kernel: DMA32: 909*4kB (M) 662*8kB (ME) >>> 313*16kB (UME) 176*32kB (UME) 39*64kB (ME) 0*128kB 0*256kB 0*512kB >>> 0*1024kB 0*2048kB 0*4096kB = 22068kB >>> Dec 24 09:41:21 krshina3 kernel: Normal: 1493*4kB (UM) 397*8kB (UME) >>> 375*16kB (UME) 1*32kB (E) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB >>> 0*2048kB 0*4096kB = 15180kB >>> Dec 24 09:41:21 krshina3 kernel: Node 0 hugepages_total=0 >>> hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB >>> Dec 24 09:41:21 krshina3 kernel: 1003306 total pagecache pages >>> Dec 24 09:41:21 krshina3 kernel: 0 pages in swap cache >>> Dec 24 09:41:21 krshina3 kernel: Swap cache stats: add 0, delete 0, find 0/0 >>> Dec 24 09:41:21 krshina3 kernel: Free swap = 9775420kB >>> Dec 24 09:41:21 krshina3 kernel: Total swap = 9775420kB >>> Dec 24 09:41:21 krshina3 kernel: 2017164 pages RAM >>> Dec 24 09:41:21 krshina3 kernel: 0 pages HighMem/MovableOnly >>> Dec 24 09:41:21 krshina3 kernel: 315557 pages reserved >>> >>> >>> >>>> Thanks a lot >>>> >>>> Dushan >>>> >>>> On Sun, Dec 18, 2016 at 1:44 PM, Edward Shishkin >>>> wrote: >>>>> Try this one in addition. >>>>> >>>>> Thanks, >>>>> Edward. >>>>> >>>>> >>>>> On 12/18/2016 01:17 PM, Dušan Čolić wrote: >>>>>> It's OK now, mounts read-only on error. >>>>>> >>>>>> What about that BUG on mount? >>>>>> >>>>>> On Sat, Dec 17, 2016 at 10:45 PM, Edward Shishkin >>>>>> wrote: >>>>>>> Please, check if this help. >>>>>>> Apply from reiser4 directory. >>>>>>> >>>>>>> Thanks, >>>>>>> Edward. >>>>>>> >>>>>>> >>>>>>> On 12/17/2016 10:08 PM, Dušan Čolić wrote: >>>>>>>> When mounting reiser4 partitions I get the following bug, but the >>>>>>>> system keeps working, even as reiser4 remounted partition as read >>>>>>>> only. >>>>>>>> >>>>>>>> All R4 partitions are ccreg40. >>>>>>>> >>>>>>>> Thanks >>>>>>>> >>>>>>>> Dushan >>>>>>>> >>>>>>>> cat /etc/fstab | grep -v "#" >>>>>>>> >>>>>>>> >>>>>>>> /dev/sda1 /boot ext2 noauto,noatime 1 2 >>>>>>>> /dev/md123 none swap sw >>>>>>>> 0 >>>>>>>> 0 >>>>>>>> /dev/sda2 / reiser4 noatime,onerror=remount-ro >>>>>>>> 0 0 >>>>>>>> /dev/md125 /mnt/backup reiser4 >>>>>>>> noatime,noauto,onerror=remount-ro 0 0 >>>>>>>> /dev/md126 /mnt/media reiser4 >>>>>>>> noatime,users,onerror=remount-ro 0 0 >>>>>>>> /dev/md127 /usr/portage reiser4 >>>>>>>> noatime,onerror=remount-ro 0 0 >>>>>>>> /dev/dvdrom /mnt/cdrom auto noauto,ro 0 0 >>>>>>>> shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 >>>>>>>> >>>>>>>> >>>>>>>> cat /proc/mdstat >>>>>>>> Personalities : [raid1] >>>>>>>> md122 : active raid1 sdc1[1] sdb1[0] >>>>>>>> 104320 blocks [2/2] [UU] >>>>>>>> >>>>>>>> md123 : active raid1 sdc2[1] sdb2[0] >>>>>>>> 594304 blocks [2/2] [UU] >>>>>>>> >>>>>>>> md124 : active raid1 sdc5[1] sdb5[0] >>>>>>>> 9775424 blocks [2/2] [UU] >>>>>>>> >>>>>>>> md125 : active raid1 sdc6[1] sdb6[0] >>>>>>>> 68364480 blocks [2/2] [UU] >>>>>>>> >>>>>>>> md126 : active raid1 sdc7[1] sdb7[0] >>>>>>>> 403110912 blocks [2/2] [UU] >>>>>>>> >>>>>>>> md127 : active raid1 sdc8[1] sdb8[0] >>>>>>>> 6433920 blocks [2/2] [UU] >>>>>>>> >>>>>>>> df >>>>>>>> >>>>>>>> Filesystem 1K-blocks Used Available Use% Mounted on >>>>>>>> /dev/sda2 37017728 30413152 6604576 83% / >>>>>>>> tmpfs 680644 1012 679632 1% /run >>>>>>>> dev 10240 0 10240 0% /dev >>>>>>>> shm 3403212 1284 3401928 1% /dev/shm >>>>>>>> cgroup_root 10240 0 10240 0% /sys/fs/cgroup >>>>>>>> /dev/md126 383034100 350741596 32292504 92% /mnt/media >>>>>>>> /dev/md127 6113484 5605344 508140 92% /usr/portage >>>>>>>> none 3403212 12 3403200 1% /run/user/1001 >>>>>>>> none 3403212 0 3403212 0% /run/user/1000 >>>>>>>> /dev/md125 64959612 52568760 12390852 81% /mnt/backup >>>>>>>> >>>>>>>> >>>>>>>> dmesg >>>>>>>> >>>>>>>> [ 2.057469] reiser4[swapper/0(1)]: try_init_format40 >>>>>>>> (fs/reiser4/plugin/disk_format/disk_format40.c:303)[vpf-1364]: >>>>>>>> NOTICE: Warning: mounting sda2 with fatal errors, >>>>>>>> forcing read-only mount. >>>>>>>> [ 2.060544] reiser4: sda2: found disk format 4.0.1. >>>>>>>> [ 2.062410] >>>>>>>> ================================================================== >>>>>>>> [ 2.063993] BUG: KASAN: use-after-free in >>>>>>>> init_format_format40+0x401/0x750 at addr ffff8801d0fc0850 >>>>>>>> [ 2.065616] Read of size 4 by task swapper/0/1 >>>>>>>> [ 2.067228] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.11-gentoo >>>>>>>> #3 >>>>>>>> [ 2.068857] Hardware name: Gigabyte Technology Co., Ltd. To be >>>>>>>> filled by O.E.M./B75-D3V, BIOS F5 07/04/2012 >>>>>>>> [ 2.070566] ffff8801d08f4580 ffff8801d6327a20 ffffffff81424185 >>>>>>>> ffff8801d6000600 >>>>>>>> [ 2.072316] ffff8801d0fc0800 ffff8801d6327a48 ffffffff811ff90c >>>>>>>> ffff8801d6327ad8 >>>>>>>> [ 2.074078] ffff8801d0fc0800 ffff8801d0fc0800 ffff8801d6327ac8 >>>>>>>> ffffffff811ffb79 >>>>>>>> [ 2.075861] Call Trace: >>>>>>>> [ 2.077616] [] dump_stack+0x4d/0x68 >>>>>>>> [ 2.079402] [] kasan_object_err+0x1c/0x70 >>>>>>>> [ 2.081216] [] kasan_report_error+0x1c9/0x4b0 >>>>>>>> [ 2.083049] [] ? zget+0xdf/0x3c0 >>>>>>>> [ 2.084876] [] kasan_report+0x34/0x40 >>>>>>>> [ 2.086717] [] ? init_format_format40+0x401/0x750 >>>>>>>> [ 2.088594] [] __asan_load4+0x61/0x80 >>>>>>>> [ 2.090471] [] init_format_format40+0x401/0x750 >>>>>>>> [ 2.092356] [] fill_super+0x14a/0x300 >>>>>>>> [ 2.094224] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 2.096073] [] ? reiser4_mount+0x20/0x20 >>>>>>>> [ 2.097930] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 2.099785] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 2.101654] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 2.103528] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 2.105397] [] ? kasan_check_write+0x14/0x20 >>>>>>>> [ 2.107295] [] ? strndup_user+0x54/0x70 >>>>>>>> [ 2.109187] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 2.111089] [] mount_block_root+0x171/0x3ac >>>>>>>> [ 2.113023] [] mount_root+0x77/0xd8 >>>>>>>> [ 2.114955] [] prepare_namespace+0x135/0x16d >>>>>>>> [ 2.116887] [] kernel_init_freeable+0x237/0x24b >>>>>>>> [ 2.118811] [] kernel_init+0xe/0x120 >>>>>>>> [ 2.120713] [] ret_from_fork+0x1f/0x40 >>>>>>>> [ 2.122618] [] ? rest_init+0x80/0x80 >>>>>>>> [ 2.124522] Object at ffff8801d0fc0800, in cache kmalloc-512 size: >>>>>>>> 512 >>>>>>>> [ 2.126453] Allocated: >>>>>>>> [ 2.128364] PID = 1 >>>>>>>> [ 2.130261] [] save_stack_trace+0x26/0x50 >>>>>>>> [ 2.132219] [] kasan_kmalloc.part.5+0x62/0xf0 >>>>>>>> [ 2.134206] [] kasan_kmalloc+0x78/0xa0 >>>>>>>> [ 2.136188] [] init_format_format40+0x1ac/0x750 >>>>>>>> [ 2.138174] [] fill_super+0x14a/0x300 >>>>>>>> [ 2.140144] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 2.142096] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 2.144055] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 2.146028] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 2.148016] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 2.150014] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 2.152026] [] mount_block_root+0x171/0x3ac >>>>>>>> [ 2.154055] [] mount_root+0x77/0xd8 >>>>>>>> [ 2.156066] [] prepare_namespace+0x135/0x16d >>>>>>>> [ 2.158074] [] kernel_init_freeable+0x237/0x24b >>>>>>>> [ 2.160079] [] kernel_init+0xe/0x120 >>>>>>>> [ 2.162020] [] ret_from_fork+0x1f/0x40 >>>>>>>> [ 2.163918] Freed: >>>>>>>> [ 2.165760] PID = 1 >>>>>>>> [ 2.167562] [] save_stack_trace+0x26/0x50 >>>>>>>> [ 2.169376] [] kasan_slab_free+0xb7/0x180 >>>>>>>> [ 2.171150] [] kfree+0x6b/0x90 >>>>>>>> [ 2.172895] [] init_format_format40+0x3f9/0x750 >>>>>>>> [ 2.174616] [] fill_super+0x14a/0x300 >>>>>>>> [ 2.176290] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 2.177962] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 2.179633] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 2.181273] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 2.182910] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 2.184541] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 2.186171] [] mount_block_root+0x171/0x3ac >>>>>>>> [ 2.187804] [] mount_root+0x77/0xd8 >>>>>>>> [ 2.189430] [] prepare_namespace+0x135/0x16d >>>>>>>> [ 2.191056] [] kernel_init_freeable+0x237/0x24b >>>>>>>> [ 2.192683] [] kernel_init+0xe/0x120 >>>>>>>> [ 2.194296] [] ret_from_fork+0x1f/0x40 >>>>>>>> [ 2.195902] Memory state around the buggy address: >>>>>>>> [ 2.197517] ffff8801d0fc0700: fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>> fc fc fc fc >>>>>>>> [ 2.199178] ffff8801d0fc0780: fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>> fc fc fc fc >>>>>>>> [ 2.200818] >ffff8801d0fc0800: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 2.202460] ^ >>>>>>>> [ 2.204114] ffff8801d0fc0880: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 2.205804] ffff8801d0fc0900: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 2.207471] >>>>>>>> ================================================================== >>>>>>>> [ 2.209162] Disabling lock debugging due to kernel taint >>>>>>>> [ 2.210933] reiser4: sda2: use 'fsck.reiser4 --fix' to complete >>>>>>>> disk format upgrade. >>>>>>>> [ 2.212696] usb 1-1.4: new high-speed USB device number 3 using >>>>>>>> ehci-pci >>>>>>>> [ 2.214507] usb 2-1.5: new full-speed USB device number 3 using >>>>>>>> ehci-pci >>>>>>>> [ 2.234910] hid-generic 0003:051D:0002.0002: device has no >>>>>>>> listeners, quitting >>>>>>>> [ 2.312037] reiser4: sda2: using Hybrid Transaction Model. >>>>>>>> [ 2.313880] VFS: Mounted root (reiser4 filesystem) readonly on device >>>>>>>> 8:2. >>>>>>>> [ 2.315949] Freeing unused kernel memory: 968K (ffffffff82086000 - >>>>>>>> ffffffff82178000) >>>>>>>> [ 2.317823] Write protecting the kernel read-only data: 16384k >>>>>>>> [ 2.320900] Freeing unused kernel memory: 1636K (ffff880001a67000 - >>>>>>>> ffff880001c00000) >>>>>>>> [ 2.331114] Freeing unused kernel memory: 1848K (ffff880001e32000 - >>>>>>>> ffff880002000000) >>>>>>>> [ 2.334644] hub 1-1.4:1.0: USB hub found >>>>>>>> [ 2.336766] hub 1-1.4:1.0: 2 ports detected >>>>>>>> [ 2.624398] usb 1-1.4.2: new full-speed USB device number 4 using >>>>>>>> ehci-pci >>>>>>>> [ 5.221431] random: crng init done >>>>>>>> [ 7.579186] Adding 594300k swap on /dev/md123. Priority:-1 >>>>>>>> extents:1 across:594300k >>>>>>>> [ 7.661464] reiser4: md126: found disk format 4.0.1. >>>>>>>> [ 7.661541] >>>>>>>> ================================================================== >>>>>>>> [ 7.661546] BUG: KASAN: use-after-free in >>>>>>>> init_format_format40+0x401/0x750 at addr ffff8801cfaf1350 >>>>>>>> [ 7.661548] Read of size 4 by task mount/1662 >>>>>>>> [ 7.661551] CPU: 0 PID: 1662 Comm: mount Tainted: G B >>>>>>>> 4.8.11-gentoo #3 >>>>>>>> [ 7.661552] Hardware name: Gigabyte Technology Co., Ltd. To be >>>>>>>> filled by O.E.M./B75-D3V, BIOS F5 07/04/2012 >>>>>>>> [ 7.661553] ffff8801ceef3580 ffff8801cf087b28 ffffffff81424185 >>>>>>>> ffff8801d6000600 >>>>>>>> [ 7.661556] ffff8801cfaf1300 ffff8801cf087b50 ffffffff811ff90c >>>>>>>> ffff8801cf087be0 >>>>>>>> [ 7.661559] ffff8801cfaf1300 ffff8801cfaf1300 ffff8801cf087bd0 >>>>>>>> ffffffff811ffb79 >>>>>>>> [ 7.661561] Call Trace: >>>>>>>> [ 7.661565] [] dump_stack+0x4d/0x68 >>>>>>>> [ 7.661569] [] kasan_object_err+0x1c/0x70 >>>>>>>> [ 7.661571] [] kasan_report_error+0x1c9/0x4b0 >>>>>>>> [ 7.661574] [] ? zget+0xdf/0x3c0 >>>>>>>> [ 7.661577] [] kasan_report+0x34/0x40 >>>>>>>> [ 7.661580] [] ? init_format_format40+0x401/0x750 >>>>>>>> [ 7.661582] [] __asan_load4+0x61/0x80 >>>>>>>> [ 7.661585] [] init_format_format40+0x401/0x750 >>>>>>>> [ 7.661588] [] fill_super+0x14a/0x300 >>>>>>>> [ 7.661591] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 7.661593] [] ? reiser4_mount+0x20/0x20 >>>>>>>> [ 7.661594] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 7.661597] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 7.661600] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 7.661602] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 7.661604] [] ? copy_mount_options+0x111/0x220 >>>>>>>> [ 7.661606] [] ? copy_mount_options+0xfa/0x220 >>>>>>>> [ 7.661608] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 7.661613] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [ 7.661614] Object at ffff8801cfaf1300, in cache kmalloc-512 size: >>>>>>>> 512 >>>>>>>> [ 7.661615] Allocated: >>>>>>>> [ 7.661615] PID = 1662 >>>>>>>> [ 7.661616] [] save_stack_trace+0x26/0x50 >>>>>>>> [ 7.661620] [] kasan_kmalloc.part.5+0x62/0xf0 >>>>>>>> [ 7.661622] [] kasan_kmalloc+0x78/0xa0 >>>>>>>> [ 7.661625] [] init_format_format40+0x1ac/0x750 >>>>>>>> [ 7.661628] [] fill_super+0x14a/0x300 >>>>>>>> [ 7.661630] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 7.661632] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 7.661634] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 7.661637] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 7.661639] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 7.661641] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 7.661643] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [ 7.661646] Freed: >>>>>>>> [ 7.661646] PID = 1662 >>>>>>>> [ 7.661647] [] save_stack_trace+0x26/0x50 >>>>>>>> [ 7.661649] [] kasan_slab_free+0xb7/0x180 >>>>>>>> [ 7.661652] [] kfree+0x6b/0x90 >>>>>>>> [ 7.661654] [] init_format_format40+0x3f9/0x750 >>>>>>>> [ 7.661657] [] fill_super+0x14a/0x300 >>>>>>>> [ 7.661659] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 7.661662] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 7.661664] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 7.661666] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 7.661668] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 7.661670] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 7.661672] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [ 7.661675] Memory state around the buggy address: >>>>>>>> [ 7.661677] ffff8801cfaf1200: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 7.661679] ffff8801cfaf1280: fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>> fc fc fc fc >>>>>>>> [ 7.661681] >ffff8801cfaf1300: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 7.661681] ^ >>>>>>>> [ 7.661683] ffff8801cfaf1380: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 7.661684] ffff8801cfaf1400: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 7.661685] >>>>>>>> ================================================================== >>>>>>>> [ 10.972840] rcu-perf:rcu_perf_writer 0 has 100 measurements >>>>>>>> [ 11.016722] rcu-perf:Test complete >>>>>>>> [ 26.835385] reiser4: md126: using Hybrid Transaction Model. >>>>>>>> [ 26.857910] reiser4: md127: found disk format 4.0.1. >>>>>>>> [ 26.857995] >>>>>>>> ================================================================== >>>>>>>> [ 26.858002] BUG: KASAN: use-after-free in >>>>>>>> init_format_format40+0x401/0x750 at addr ffff8801cbf560d0 >>>>>>>> [ 26.858003] Read of size 4 by task mount/1662 >>>>>>>> [ 26.858006] CPU: 0 PID: 1662 Comm: mount Tainted: G B >>>>>>>> 4.8.11-gentoo #3 >>>>>>>> [ 26.858007] Hardware name: Gigabyte Technology Co., Ltd. To be >>>>>>>> filled by O.E.M./B75-D3V, BIOS F5 07/04/2012 >>>>>>>> [ 26.858009] ffff8801b9ded5c0 ffff8801cf087b28 ffffffff81424185 >>>>>>>> ffff8801d6000600 >>>>>>>> [ 26.858012] ffff8801cbf56080 ffff8801cf087b50 ffffffff811ff90c >>>>>>>> ffff8801cf087be0 >>>>>>>> [ 26.858014] ffff8801cbf56080 ffff8801cbf56080 ffff8801cf087bd0 >>>>>>>> ffffffff811ffb79 >>>>>>>> [ 26.858017] Call Trace: >>>>>>>> [ 26.858020] [] dump_stack+0x4d/0x68 >>>>>>>> [ 26.858024] [] kasan_object_err+0x1c/0x70 >>>>>>>> [ 26.858027] [] kasan_report_error+0x1c9/0x4b0 >>>>>>>> [ 26.858029] [] ? zget+0xdf/0x3c0 >>>>>>>> [ 26.858032] [] kasan_report+0x34/0x40 >>>>>>>> [ 26.858035] [] ? init_format_format40+0x401/0x750 >>>>>>>> [ 26.858038] [] __asan_load4+0x61/0x80 >>>>>>>> [ 26.858040] [] init_format_format40+0x401/0x750 >>>>>>>> [ 26.858043] [] fill_super+0x14a/0x300 >>>>>>>> [ 26.858046] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 26.858048] [] ? reiser4_mount+0x20/0x20 >>>>>>>> [ 26.858050] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 26.858052] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 26.858055] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 26.858057] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 26.858059] [] ? copy_mount_options+0xfa/0x220 >>>>>>>> [ 26.858061] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 26.858065] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [ 26.858067] Object at ffff8801cbf56080, in cache kmalloc-512 size: >>>>>>>> 512 >>>>>>>> [ 26.858067] Allocated: >>>>>>>> [ 26.858068] PID = 1662 >>>>>>>> [ 26.858069] [] save_stack_trace+0x26/0x50 >>>>>>>> [ 26.858072] [] kasan_kmalloc.part.5+0x62/0xf0 >>>>>>>> [ 26.858075] [] kasan_kmalloc+0x78/0xa0 >>>>>>>> [ 26.858077] [] init_format_format40+0x1ac/0x750 >>>>>>>> [ 26.858080] [] fill_super+0x14a/0x300 >>>>>>>> [ 26.858082] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 26.858085] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 26.858087] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 26.858089] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 26.858091] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 26.858093] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 26.858095] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [ 26.858098] Freed: >>>>>>>> [ 26.858099] PID = 1662 >>>>>>>> [ 26.858099] [] save_stack_trace+0x26/0x50 >>>>>>>> [ 26.858102] [] kasan_slab_free+0xb7/0x180 >>>>>>>> [ 26.858104] [] kfree+0x6b/0x90 >>>>>>>> [ 26.858107] [] init_format_format40+0x3f9/0x750 >>>>>>>> [ 26.858109] [] fill_super+0x14a/0x300 >>>>>>>> [ 26.858111] [] mount_bdev+0x1bf/0x200 >>>>>>>> [ 26.858114] [] reiser4_mount+0x10/0x20 >>>>>>>> [ 26.858116] [] mount_fs+0x2e/0xe0 >>>>>>>> [ 26.858118] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [ 26.858120] [] do_mount+0x1d2/0x1080 >>>>>>>> [ 26.858122] [] SyS_mount+0x66/0xb0 >>>>>>>> [ 26.858124] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [ 26.858128] Memory state around the buggy address: >>>>>>>> [ 26.858130] ffff8801cbf55f80: fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>> fc fc fc fc >>>>>>>> [ 26.858131] ffff8801cbf56000: fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>> fc fc fc fc >>>>>>>> [ 26.858133] >ffff8801cbf56080: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 26.858134] ^ >>>>>>>> [ 26.858135] ffff8801cbf56100: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 26.858137] ffff8801cbf56180: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [ 26.858137] >>>>>>>> ================================================================== >>>>>>>> [ 27.199941] reiser4: md127: using Hybrid Transaction Model. >>>>>>>> >>>>>>>> >>>>>>>> [33530.203469] reiser4[mount(11677)]: try_init_format40 >>>>>>>> (fs/reiser4/plugin/disk_format/disk_format40.c:303)[vpf-1364]: >>>>>>>> NOTICE: Warning: mounting md125 with fatal errors, >>>>>>>> forcing read-only mount. >>>>>>>> [33530.203480] reiser4: md125: found disk format 4.0.1. >>>>>>>> [33530.203564] >>>>>>>> ================================================================== >>>>>>>> [33530.203570] BUG: KASAN: use-after-free in >>>>>>>> init_format_format40+0x401/0x750 at addr ffff88013164d810 >>>>>>>> [33530.203571] Read of size 4 by task mount/11677 >>>>>>>> [33530.203574] CPU: 0 PID: 11677 Comm: mount Tainted: G B >>>>>>>> 4.8.11-gentoo #3 >>>>>>>> [33530.203575] Hardware name: Gigabyte Technology Co., Ltd. To be >>>>>>>> filled by O.E.M./B75-D3V, BIOS F5 07/04/2012 >>>>>>>> [33530.203577] ffff88000e65ce80 ffff88000da87b28 ffffffff81424185 >>>>>>>> ffff8801d6000600 >>>>>>>> [33530.203580] ffff88013164d7c0 ffff88000da87b50 ffffffff811ff90c >>>>>>>> ffff88000da87be0 >>>>>>>> [33530.203582] ffff88013164d7c0 ffff88013164d7c0 ffff88000da87bd0 >>>>>>>> ffffffff811ffb79 >>>>>>>> [33530.203585] Call Trace: >>>>>>>> [33530.203588] [] dump_stack+0x4d/0x68 >>>>>>>> [33530.203592] [] kasan_object_err+0x1c/0x70 >>>>>>>> [33530.203595] [] kasan_report_error+0x1c9/0x4b0 >>>>>>>> [33530.203597] [] ? zget+0xdf/0x3c0 >>>>>>>> [33530.203600] [] kasan_report+0x34/0x40 >>>>>>>> [33530.203603] [] ? init_format_format40+0x401/0x750 >>>>>>>> [33530.203605] [] __asan_load4+0x61/0x80 >>>>>>>> [33530.203608] [] init_format_format40+0x401/0x750 >>>>>>>> [33530.203610] [] fill_super+0x14a/0x300 >>>>>>>> [33530.203613] [] mount_bdev+0x1bf/0x200 >>>>>>>> [33530.203615] [] ? reiser4_mount+0x20/0x20 >>>>>>>> [33530.203617] [] reiser4_mount+0x10/0x20 >>>>>>>> [33530.203620] [] mount_fs+0x2e/0xe0 >>>>>>>> [33530.203622] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [33530.203625] [] do_mount+0x1d2/0x1080 >>>>>>>> [33530.203627] [] ? copy_mount_options+0x111/0x220 >>>>>>>> [33530.203629] [] ? copy_mount_options+0xfa/0x220 >>>>>>>> [33530.203631] [] SyS_mount+0x66/0xb0 >>>>>>>> [33530.203635] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [33530.203637] Object at ffff88013164d7c0, in cache kmalloc-512 size: >>>>>>>> 512 >>>>>>>> [33530.203637] Allocated: >>>>>>>> [33530.203638] PID = 11677 >>>>>>>> [33530.203639] [] save_stack_trace+0x26/0x50 >>>>>>>> [33530.203642] [] kasan_kmalloc.part.5+0x62/0xf0 >>>>>>>> [33530.203645] [] kasan_kmalloc+0x78/0xa0 >>>>>>>> [33530.203647] [] init_format_format40+0x1ac/0x750 >>>>>>>> [33530.203650] [] fill_super+0x14a/0x300 >>>>>>>> [33530.203652] [] mount_bdev+0x1bf/0x200 >>>>>>>> [33530.203654] [] reiser4_mount+0x10/0x20 >>>>>>>> [33530.203656] [] mount_fs+0x2e/0xe0 >>>>>>>> [33530.203659] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [33530.203661] [] do_mount+0x1d2/0x1080 >>>>>>>> [33530.203663] [] SyS_mount+0x66/0xb0 >>>>>>>> [33530.203665] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [33530.203668] Freed: >>>>>>>> [33530.203669] PID = 11677 >>>>>>>> [33530.203669] [] save_stack_trace+0x26/0x50 >>>>>>>> [33530.203671] [] kasan_slab_free+0xb7/0x180 >>>>>>>> [33530.203674] [] kfree+0x6b/0x90 >>>>>>>> [33530.203676] [] init_format_format40+0x3f9/0x750 >>>>>>>> [33530.203679] [] fill_super+0x14a/0x300 >>>>>>>> [33530.203681] [] mount_bdev+0x1bf/0x200 >>>>>>>> [33530.203683] [] reiser4_mount+0x10/0x20 >>>>>>>> [33530.203685] [] mount_fs+0x2e/0xe0 >>>>>>>> [33530.203688] [] vfs_kern_mount+0x66/0x190 >>>>>>>> [33530.203690] [] do_mount+0x1d2/0x1080 >>>>>>>> [33530.203692] [] SyS_mount+0x66/0xb0 >>>>>>>> [33530.203694] [] entry_SYSCALL_64_fastpath+0x13/0x8f >>>>>>>> [33530.203697] Memory state around the buggy address: >>>>>>>> [33530.203699] ffff88013164d700: fc fc fc fc fc fc fc fc fc fc fc fc >>>>>>>> fc fc fc fc >>>>>>>> [33530.203701] ffff88013164d780: fc fc fc fc fc fc fc fc fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [33530.203703] >ffff88013164d800: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [33530.203703] ^ >>>>>>>> [33530.203705] ffff88013164d880: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [33530.203707] ffff88013164d900: fb fb fb fb fb fb fb fb fb fb fb fb >>>>>>>> fb fb fb fb >>>>>>>> [33530.203707] >>>>>>>> ================================================================== >>>>>>>> [33533.485380] reiser4: md125: using Hybrid Transaction Model. >>>>>>>> -- >>>>>>>> To unsubscribe from this list: send the line "unsubscribe >>>>>>>> reiserfs-devel" >>>>>>>> in >>>>>>>> the body of a message to majordomo@vger.kernel.org >>>>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>>>>>