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【OLK5.10】ext4: fix use-after-free in ext4_ext_shift_extents
Done
#I5SV2U
Task
LiBaokun
Opened this issue
2022-09-23 19:49
<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）--> <!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”--> [56052.150014] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [58090.244800] Quota error (device sda): write_blk: dquota write failed [58090.254563] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [58925.432045] Quota error (device sda): write_blk: dquota write failed [58925.436555] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [58925.741201] Quota error (device sda): write_blk: dquota write failed [58925.743867] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [67171.951164] ================================================================== [67171.962465] BUG: KASAN: use-after-free in ext4_ext_shift_extents+0x1188/0x1290 [67171.964033] Read of size 4 at addr ffff88800534f004 by task fsstress/7189 [67171.965698] [67171.966182] CPU: 2 PID: 7189 Comm: fsstress Not tainted 5.10.0-g25d42c5b82d4 #1 [67171.967751] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [67171.969685] Call Trace: [67171.970370] ? dump_stack+0x10d/0x163 [67171.971157] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.972249] ? print_address_description.constprop.2+0x2c/0x390 [67171.973550] ? vprintk_func+0x97/0x1d0 [67171.974413] ? irq_work_claim+0x26/0x110 [67171.975244] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.976262] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.977316] ? kasan_report.cold.5+0x56/0xba [67171.978217] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.979236] ? __asan_report_load4_noabort+0x20/0x30 [67171.980280] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.981323] ? ext4_ext_next_allocated_block+0x3c0/0x3c0 [67171.982476] ? _raw_read_unlock_irqrestore+0x50/0x50 [67171.983536] ? ext4_da_release_space+0x21/0x560 [67171.984487] ? ext4_es_remove_extent+0x2b6/0x4c0 [67171.985461] ? ext4_es_lookup_extent+0xc20/0xc20 [67171.986427] ? kasan_slab_free+0x12/0x20 [67171.987256] ? kfree+0x152/0xc90 [67171.987954] ? __kasan_check_write+0x20/0x30 [67171.988884] ? __brelse+0xb1/0xe0 [67171.989609] ? ext4_fallocate+0x2fcb/0x3c90 [67171.990504] ? ext4_ext_truncate+0x2d0/0x2d0 [67171.991425] ? __se_sys_newfstat+0x90/0x100 [67171.992323] ? __ia32_compat_sys_newfstat+0x90/0x90 [67171.993382] ? ext4_ext_truncate+0x2d0/0x2d0 [67171.994318] ? vfs_fallocate+0x393/0xba0 [67171.995162] ? ksys_fallocate+0x56/0xb0 [67171.995986] ? __x64_sys_fallocate+0xc4/0x130 [67171.996910] ? syscall_exit_to_user_mode+0x5b/0x330 [67171.997948] ? do_syscall_64+0x45/0x70 [67171.998757] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [67171.999862] [67172.000205] The buggy address belongs to the page: [67172.001239] page:ffffea000014d3c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x534f [67172.003134] flags: 0x1fffff80000000(node=0|zone=1|lastcpupid=0x1fffff) [67172.004509] raw: 001fffff80000000 ffffea000014d408 ffff888059f401c0 0000000000000000 [67172.006129] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [67172.007724] page dumped because: kasan: bad access detected [67172.008880] [67172.009229] Memory state around the buggy address: [67172.010250] ffff88800534ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [67172.011741] ffff88800534ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [67172.013231] >ffff88800534f000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [67172.014712] ^ [67172.015409] ffff88800534f080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [67172.016886] ffff88800534f100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [67172.018364] ==================================================================
<!-- #请根据issue的类型在标题右侧下拉框中选择对应的选项（需求、缺陷或CVE等）--> <!-- #请根据issue相关的版本在里程碑中选择对应的节点，若是与版本无关，请选择“不关联里程碑”--> [56052.150014] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [58090.244800] Quota error (device sda): write_blk: dquota write failed [58090.254563] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [58925.432045] Quota error (device sda): write_blk: dquota write failed [58925.436555] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [58925.741201] Quota error (device sda): write_blk: dquota write failed [58925.743867] Quota error (device sda): qtree_write_dquot: Error -28 occurred while creating quota [67171.951164] ================================================================== [67171.962465] BUG: KASAN: use-after-free in ext4_ext_shift_extents+0x1188/0x1290 [67171.964033] Read of size 4 at addr ffff88800534f004 by task fsstress/7189 [67171.965698] [67171.966182] CPU: 2 PID: 7189 Comm: fsstress Not tainted 5.10.0-g25d42c5b82d4 #1 [67171.967751] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 [67171.969685] Call Trace: [67171.970370] ? dump_stack+0x10d/0x163 [67171.971157] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.972249] ? print_address_description.constprop.2+0x2c/0x390 [67171.973550] ? vprintk_func+0x97/0x1d0 [67171.974413] ? irq_work_claim+0x26/0x110 [67171.975244] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.976262] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.977316] ? kasan_report.cold.5+0x56/0xba [67171.978217] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.979236] ? __asan_report_load4_noabort+0x20/0x30 [67171.980280] ? ext4_ext_shift_extents+0x1188/0x1290 [67171.981323] ? ext4_ext_next_allocated_block+0x3c0/0x3c0 [67171.982476] ? _raw_read_unlock_irqrestore+0x50/0x50 [67171.983536] ? ext4_da_release_space+0x21/0x560 [67171.984487] ? ext4_es_remove_extent+0x2b6/0x4c0 [67171.985461] ? ext4_es_lookup_extent+0xc20/0xc20 [67171.986427] ? kasan_slab_free+0x12/0x20 [67171.987256] ? kfree+0x152/0xc90 [67171.987954] ? __kasan_check_write+0x20/0x30 [67171.988884] ? __brelse+0xb1/0xe0 [67171.989609] ? ext4_fallocate+0x2fcb/0x3c90 [67171.990504] ? ext4_ext_truncate+0x2d0/0x2d0 [67171.991425] ? __se_sys_newfstat+0x90/0x100 [67171.992323] ? __ia32_compat_sys_newfstat+0x90/0x90 [67171.993382] ? ext4_ext_truncate+0x2d0/0x2d0 [67171.994318] ? vfs_fallocate+0x393/0xba0 [67171.995162] ? ksys_fallocate+0x56/0xb0 [67171.995986] ? __x64_sys_fallocate+0xc4/0x130 [67171.996910] ? syscall_exit_to_user_mode+0x5b/0x330 [67171.997948] ? do_syscall_64+0x45/0x70 [67171.998757] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [67171.999862] [67172.000205] The buggy address belongs to the page: [67172.001239] page:ffffea000014d3c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x534f [67172.003134] flags: 0x1fffff80000000(node=0|zone=1|lastcpupid=0x1fffff) [67172.004509] raw: 001fffff80000000 ffffea000014d408 ffff888059f401c0 0000000000000000 [67172.006129] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [67172.007724] page dumped because: kasan: bad access detected [67172.008880] [67172.009229] Memory state around the buggy address: [67172.010250] ffff88800534ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [67172.011741] ffff88800534ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [67172.013231] >ffff88800534f000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [67172.014712] ^ [67172.015409] ffff88800534f080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [67172.016886] ffff88800534f100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [67172.018364] ==================================================================
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