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KASAN: use-after-free Read in xlog_alloc_log | 2 (3) | 2019/06/27 13:52 |
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KASAN: use-after-free Read in xlog_alloc_log | 2 (3) | 2019/06/27 13:52 |
XFS (loop4): log mount failed XFS (loop4): Mounting V4 Filesystem ================================================================== BUG: KASAN: use-after-free in xlog_alloc_log+0x126a/0x1390 fs/xfs/xfs_log.c:1471 Read of size 8 at addr ffff8880958f7750 by task syz-executor.4/11895 CPU: 0 PID: 11895 Comm: syz-executor.4 Not tainted 5.2.0+ #66 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_address_description.cold+0xd4/0x306 mm/kasan/report.c:351 __kasan_report.cold+0x1b/0x36 mm/kasan/report.c:482 kasan_report+0x12/0x20 mm/kasan/common.c:612 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:132 xlog_alloc_log+0x126a/0x1390 fs/xfs/xfs_log.c:1471 xfs_log_mount+0xdc/0x780 fs/xfs/xfs_log.c:576 xfs_mountfs+0xdb9/0x1be0 fs/xfs/xfs_mount.c:811 xfs_fs_fill_super+0xcca/0x16e0 fs/xfs/xfs_super.c:1729 mount_bdev+0x304/0x3c0 fs/super.c:1346 xfs_fs_mount+0x35/0x40 fs/xfs/xfs_super.c:1803 legacy_get_tree+0x108/0x220 fs/fs_context.c:661 vfs_get_tree+0x8e/0x390 fs/super.c:1476 do_new_mount fs/namespace.c:2792 [inline] do_mount+0x138c/0x1c00 fs/namespace.c:3112 ksys_mount+0xdb/0x150 fs/namespace.c:3321 __do_sys_mount fs/namespace.c:3335 [inline] __se_sys_mount fs/namespace.c:3332 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3332 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c26a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fbba560ca88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbba560cb40 RCX: 000000000045c26a RDX: 00007fbba560cae0 RSI: 0000000020000000 RDI: 00007fbba560cb00 RBP: 0000000000000001 R08: 00007fbba560cb40 R09: 00007fbba560cae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 R13: 00000000004c8925 R14: 00000000004df5b0 R15: 00000000ffffffff Allocated by task 11895: save_stack+0x23/0x90 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:487 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:460 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:501 __do_kmalloc mm/slab.c:3655 [inline] __kmalloc+0x163/0x780 mm/slab.c:3664 kmalloc include/linux/slab.h:557 [inline] kmem_alloc+0xd2/0x200 fs/xfs/kmem.c:19 kmem_zalloc fs/xfs/kmem.h:73 [inline] xlog_alloc_log+0xbf8/0x1390 fs/xfs/xfs_log.c:1413 xfs_log_mount+0xdc/0x780 fs/xfs/xfs_log.c:576 xfs_mountfs+0xdb9/0x1be0 fs/xfs/xfs_mount.c:811 xfs_fs_fill_super+0xcca/0x16e0 fs/xfs/xfs_super.c:1729 mount_bdev+0x304/0x3c0 fs/super.c:1346 xfs_fs_mount+0x35/0x40 fs/xfs/xfs_super.c:1803 legacy_get_tree+0x108/0x220 fs/fs_context.c:661 vfs_get_tree+0x8e/0x390 fs/super.c:1476 do_new_mount fs/namespace.c:2792 [inline] do_mount+0x138c/0x1c00 fs/namespace.c:3112 ksys_mount+0xdb/0x150 fs/namespace.c:3321 __do_sys_mount fs/namespace.c:3335 [inline] __se_sys_mount fs/namespace.c:3332 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3332 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 11895: save_stack+0x23/0x90 mm/kasan/common.c:69 set_track mm/kasan/common.c:77 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:449 kasan_slab_free+0xe/0x10 mm/kasan/common.c:457 __cache_free mm/slab.c:3425 [inline] kfree+0x10a/0x2c0 mm/slab.c:3756 kvfree+0x61/0x70 mm/util.c:413 kmem_free fs/xfs/kmem.h:66 [inline] xlog_alloc_log+0xead/0x1390 fs/xfs/xfs_log.c:1473 xfs_log_mount+0xdc/0x780 fs/xfs/xfs_log.c:576 xfs_mountfs+0xdb9/0x1be0 fs/xfs/xfs_mount.c:811 xfs_fs_fill_super+0xcca/0x16e0 fs/xfs/xfs_super.c:1729 mount_bdev+0x304/0x3c0 fs/super.c:1346 xfs_fs_mount+0x35/0x40 fs/xfs/xfs_super.c:1803 legacy_get_tree+0x108/0x220 fs/fs_context.c:661 vfs_get_tree+0x8e/0x390 fs/super.c:1476 do_new_mount fs/namespace.c:2792 [inline] do_mount+0x138c/0x1c00 fs/namespace.c:3112 ksys_mount+0xdb/0x150 fs/namespace.c:3321 __do_sys_mount fs/namespace.c:3335 [inline] __se_sys_mount fs/namespace.c:3332 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3332 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880958f76c0 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 144 bytes inside of 1024-byte region [ffff8880958f76c0, ffff8880958f7ac0) The buggy address belongs to the page: page:ffffea0002563d80 refcount:1 mapcount:0 mapping:ffff8880aa400c40 index:0xffff8880958f6940 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea0002220c88 ffffea000298b908 ffff8880aa400c40 raw: ffff8880958f6940 ffff8880958f6040 0000000100000005 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880958f7600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880958f7680: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb >ffff8880958f7700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880958f7780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880958f7800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/07/17 03:48 | upstream | 3eb514866f20 | 0d10349c | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2019/07/16 00:25 | upstream | fec88ab0af97 | 6732e2c0 | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2019/07/15 23:29 | upstream | fec88ab0af97 | 139ac68a | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2019/07/15 00:39 | upstream | 192f0f8e9db7 | 2bbe2f05 | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2019/07/15 00:38 | upstream | 192f0f8e9db7 | 2bbe2f05 | .config | console log | report | ci-upstream-kasan-gce-smack-root | |||||
2019/07/14 10:29 | upstream | 192f0f8e9db7 | e6fb0f13 | .config | console log | report | ci-upstream-kasan-gce-smack-root | |||||
2019/07/14 10:00 | upstream | 192f0f8e9db7 | e6fb0f13 | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2019/07/08 14:49 | linux-next | d58b5ab90ee7 | f62e1e85 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/07/02 08:46 | linux-next | 48a8a5f9a326 | cccc4302 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/29 11:14 | linux-next | 48568d8c7f47 | 7509bf36 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/28 17:06 | linux-next | 48568d8c7f47 | 7509bf36 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/28 10:08 | linux-next | 8087b004bd09 | 7509bf36 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/27 22:53 | linux-next | 8087b004bd09 | 7509bf36 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/27 19:46 | linux-next | 8087b004bd09 | 7509bf36 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/27 12:28 | linux-next | 8087b004bd09 | 7509bf36 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2019/06/26 16:10 | linux-next | 1dd45f170b7e | 4d342240 | .config | console log | report | ci-upstream-linux-next-kasan-gce-root |