Date
Nov. 20, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 37.087831] ================================================================== [ 37.088758] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 37.090806] Write of size 33 at addr fff00000c659f680 by task kunit_try_catch/175 [ 37.091605] [ 37.091986] CPU: 0 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 37.092971] Tainted: [B]=BAD_PAGE, [N]=TEST [ 37.093593] Hardware name: linux,dummy-virt (DT) [ 37.094183] Call trace: [ 37.095059] show_stack+0x20/0x38 (C) [ 37.095638] dump_stack_lvl+0x8c/0xd0 [ 37.096184] print_report+0x118/0x5e0 [ 37.096723] kasan_report+0xc8/0x118 [ 37.097813] kasan_check_range+0x100/0x1a8 [ 37.098320] __asan_memset+0x34/0x78 [ 37.098844] kmalloc_uaf_memset+0x170/0x310 [ 37.099364] kunit_try_run_case+0x14c/0x3d0 [ 37.100011] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.100681] kthread+0x24c/0x2d0 [ 37.101764] ret_from_fork+0x10/0x20 [ 37.102279] [ 37.102635] Allocated by task 175: [ 37.103049] kasan_save_stack+0x3c/0x68 [ 37.103376] kasan_save_track+0x20/0x40 [ 37.103811] kasan_save_alloc_info+0x40/0x58 [ 37.104396] __kasan_kmalloc+0xd4/0xd8 [ 37.104871] __kmalloc_cache_noprof+0x15c/0x3c8 [ 37.105544] kmalloc_uaf_memset+0xb8/0x310 [ 37.106135] kunit_try_run_case+0x14c/0x3d0 [ 37.106811] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.107534] kthread+0x24c/0x2d0 [ 37.108060] ret_from_fork+0x10/0x20 [ 37.109180] [ 37.109550] Freed by task 175: [ 37.109976] kasan_save_stack+0x3c/0x68 [ 37.110578] kasan_save_track+0x20/0x40 [ 37.111161] kasan_save_free_info+0x4c/0x78 [ 37.112196] __kasan_slab_free+0x6c/0x98 [ 37.112749] kfree+0x114/0x3d0 [ 37.113815] kmalloc_uaf_memset+0x11c/0x310 [ 37.114315] kunit_try_run_case+0x14c/0x3d0 [ 37.114933] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.115574] kthread+0x24c/0x2d0 [ 37.116097] ret_from_fork+0x10/0x20 [ 37.116650] [ 37.116950] The buggy address belongs to the object at fff00000c659f680 [ 37.116950] which belongs to the cache kmalloc-64 of size 64 [ 37.118659] The buggy address is located 0 bytes inside of [ 37.118659] freed 64-byte region [fff00000c659f680, fff00000c659f6c0) [ 37.119775] [ 37.120117] The buggy address belongs to the physical page: [ 37.120774] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10659f [ 37.122259] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 37.123012] page_type: f5(slab) [ 37.123478] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 37.124242] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 37.125004] page dumped because: kasan: bad access detected [ 37.126257] [ 37.126631] Memory state around the buggy address: [ 37.127244] fff00000c659f580: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 37.128482] fff00000c659f600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 37.129845] >fff00000c659f680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 37.130524] ^ [ 37.130955] fff00000c659f700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.131706] fff00000c659f780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.132407] ==================================================================
[ 28.580027] ================================================================== [ 28.581086] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 28.581905] Write of size 33 at addr ffff8881029dfe00 by task kunit_try_catch/193 [ 28.582595] [ 28.582873] CPU: 1 UID: 0 PID: 193 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 28.583616] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.584112] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.584600] Call Trace: [ 28.585002] <TASK> [ 28.585360] dump_stack_lvl+0x73/0xb0 [ 28.585960] print_report+0xd1/0x640 [ 28.586263] ? __virt_addr_valid+0x1db/0x2d0 [ 28.586778] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.587500] kasan_report+0x102/0x140 [ 28.588010] ? kmalloc_uaf_memset+0x1a4/0x360 [ 28.588338] ? kmalloc_uaf_memset+0x1a4/0x360 [ 28.589086] kasan_check_range+0x10c/0x1c0 [ 28.589494] __asan_memset+0x27/0x50 [ 28.590173] kmalloc_uaf_memset+0x1a4/0x360 [ 28.590564] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 28.591162] ? __schedule+0xc3e/0x2790 [ 28.591455] ? __pfx_read_tsc+0x10/0x10 [ 28.591995] ? ktime_get_ts64+0x84/0x230 [ 28.592612] kunit_try_run_case+0x1b3/0x490 [ 28.593239] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.593816] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.594296] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.594921] ? __kthread_parkme+0x82/0x160 [ 28.595216] ? preempt_count_sub+0x50/0x80 [ 28.595622] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.596309] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.597093] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.597680] kthread+0x257/0x310 [ 28.598015] ? __pfx_kthread+0x10/0x10 [ 28.598313] ret_from_fork+0x41/0x80 [ 28.598934] ? __pfx_kthread+0x10/0x10 [ 28.599777] ret_from_fork_asm+0x1a/0x30 [ 28.600130] </TASK> [ 28.600320] [ 28.600544] Allocated by task 193: [ 28.601286] kasan_save_stack+0x3d/0x60 [ 28.601659] kasan_save_track+0x18/0x40 [ 28.602075] kasan_save_alloc_info+0x3b/0x50 [ 28.602772] __kasan_kmalloc+0xb7/0xc0 [ 28.603192] __kmalloc_cache_noprof+0x184/0x410 [ 28.603493] kmalloc_uaf_memset+0xaa/0x360 [ 28.603986] kunit_try_run_case+0x1b3/0x490 [ 28.604524] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.605207] kthread+0x257/0x310 [ 28.605526] ret_from_fork+0x41/0x80 [ 28.606765] ret_from_fork_asm+0x1a/0x30 [ 28.607092] [ 28.607374] Freed by task 193: [ 28.608198] kasan_save_stack+0x3d/0x60 [ 28.608892] kasan_save_track+0x18/0x40 [ 28.609381] kasan_save_free_info+0x3f/0x60 [ 28.609864] __kasan_slab_free+0x56/0x70 [ 28.610567] kfree+0x123/0x3f0 [ 28.611207] kmalloc_uaf_memset+0x12c/0x360 [ 28.611750] kunit_try_run_case+0x1b3/0x490 [ 28.612201] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.612955] kthread+0x257/0x310 [ 28.613276] ret_from_fork+0x41/0x80 [ 28.613966] ret_from_fork_asm+0x1a/0x30 [ 28.614446] [ 28.614734] The buggy address belongs to the object at ffff8881029dfe00 [ 28.614734] which belongs to the cache kmalloc-64 of size 64 [ 28.616047] The buggy address is located 0 bytes inside of [ 28.616047] freed 64-byte region [ffff8881029dfe00, ffff8881029dfe40) [ 28.617195] [ 28.617448] The buggy address belongs to the physical page: [ 28.618038] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029df [ 28.618841] flags: 0x200000000000000(node=0|zone=2) [ 28.619209] page_type: f5(slab) [ 28.619774] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 28.620744] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 28.621472] page dumped because: kasan: bad access detected [ 28.622105] [ 28.622482] Memory state around the buggy address: [ 28.623076] ffff8881029dfd00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 28.623796] ffff8881029dfd80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 28.624554] >ffff8881029dfe00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 28.625323] ^ [ 28.625783] ffff8881029dfe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.626458] ffff8881029dff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.627129] ==================================================================