Date
Dec. 4, 2024, 3:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 32.567388] ================================================================== [ 32.568896] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x168/0x308 [ 32.569607] Read of size 1 at addr fff00000c5b31d20 by task kunit_try_catch/180 [ 32.570769] [ 32.571155] CPU: 0 UID: 0 PID: 180 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 32.572345] Tainted: [B]=BAD_PAGE, [N]=TEST [ 32.573558] Hardware name: linux,dummy-virt (DT) [ 32.574201] Call trace: [ 32.575173] show_stack+0x20/0x38 (C) [ 32.575998] dump_stack_lvl+0x8c/0xd0 [ 32.576891] print_report+0x118/0x5e0 [ 32.577550] kasan_report+0xc8/0x118 [ 32.578391] __kasan_check_byte+0x54/0x70 [ 32.579027] kfree_sensitive+0x30/0xb0 [ 32.579478] kmalloc_double_kzfree+0x168/0x308 [ 32.580699] kunit_try_run_case+0x14c/0x3d0 [ 32.581323] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.582358] kthread+0x24c/0x2d0 [ 32.582983] ret_from_fork+0x10/0x20 [ 32.584105] [ 32.584368] Allocated by task 180: [ 32.585062] kasan_save_stack+0x3c/0x68 [ 32.586831] kasan_save_track+0x20/0x40 [ 32.587500] kasan_save_alloc_info+0x40/0x58 [ 32.588085] __kasan_kmalloc+0xd4/0xd8 [ 32.588604] __kmalloc_cache_noprof+0x15c/0x3c0 [ 32.589608] kmalloc_double_kzfree+0xb8/0x308 [ 32.590642] kunit_try_run_case+0x14c/0x3d0 [ 32.591545] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.592291] kthread+0x24c/0x2d0 [ 32.592920] ret_from_fork+0x10/0x20 [ 32.593616] [ 32.595044] Freed by task 180: [ 32.595580] kasan_save_stack+0x3c/0x68 [ 32.596312] kasan_save_track+0x20/0x40 [ 32.597114] kasan_save_free_info+0x4c/0x78 [ 32.597888] __kasan_slab_free+0x6c/0x98 [ 32.599266] kfree+0x114/0x3c8 [ 32.599702] kfree_sensitive+0x80/0xb0 [ 32.600476] kmalloc_double_kzfree+0x11c/0x308 [ 32.601137] kunit_try_run_case+0x14c/0x3d0 [ 32.601842] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 32.603030] kthread+0x24c/0x2d0 [ 32.603413] ret_from_fork+0x10/0x20 [ 32.604160] [ 32.604845] The buggy address belongs to the object at fff00000c5b31d20 [ 32.604845] which belongs to the cache kmalloc-16 of size 16 [ 32.606657] The buggy address is located 0 bytes inside of [ 32.606657] freed 16-byte region [fff00000c5b31d20, fff00000c5b31d30) [ 32.608048] [ 32.608362] The buggy address belongs to the physical page: [ 32.609242] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105b31 [ 32.610179] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 32.611310] page_type: f5(slab) [ 32.612281] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 32.613723] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 32.615459] page dumped because: kasan: bad access detected [ 32.616509] [ 32.617027] Memory state around the buggy address: [ 32.617820] fff00000c5b31c00: 00 06 fc fc 00 06 fc fc fa fb fc fc 00 06 fc fc [ 32.618800] fff00000c5b31c80: 00 06 fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 32.619834] >fff00000c5b31d00: fa fb fc fc fa fb fc fc fc fc fc fc fc fc fc fc [ 32.622279] ^ [ 32.623085] fff00000c5b31d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.624149] fff00000c5b31e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.625105] ==================================================================
[ 23.377089] ================================================================== [ 23.378600] BUG: KASAN: slab-use-after-free in kmalloc_double_kzfree+0x19d/0x360 [ 23.380216] Read of size 1 at addr ffff888101adf0e0 by task kunit_try_catch/200 [ 23.380996] [ 23.381287] CPU: 0 UID: 0 PID: 200 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241204 #1 [ 23.382574] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.383000] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 23.384856] Call Trace: [ 23.385259] <TASK> [ 23.385555] dump_stack_lvl+0x73/0xb0 [ 23.386544] print_report+0xd1/0x640 [ 23.386845] ? __virt_addr_valid+0x1db/0x2d0 [ 23.387979] ? kasan_complete_mode_report_info+0x64/0x200 [ 23.388958] kasan_report+0x102/0x140 [ 23.389400] ? kmalloc_double_kzfree+0x19d/0x360 [ 23.389942] ? kmalloc_double_kzfree+0x19d/0x360 [ 23.391152] ? kmalloc_double_kzfree+0x19d/0x360 [ 23.391967] __kasan_check_byte+0x3d/0x50 [ 23.392605] kfree_sensitive+0x22/0x90 [ 23.393001] kmalloc_double_kzfree+0x19d/0x360 [ 23.393400] ? __pfx_kmalloc_double_kzfree+0x10/0x10 [ 23.393841] ? __schedule+0xc3e/0x2790 [ 23.394829] ? __pfx_read_tsc+0x10/0x10 [ 23.395287] ? ktime_get_ts64+0x86/0x230 [ 23.396254] kunit_try_run_case+0x1b3/0x490 [ 23.397026] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.397874] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 23.398477] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 23.399272] ? __kthread_parkme+0x82/0x160 [ 23.399993] ? preempt_count_sub+0x50/0x80 [ 23.401021] ? __pfx_kunit_try_run_case+0x10/0x10 [ 23.401446] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 23.402085] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.403219] kthread+0x257/0x310 [ 23.403756] ? __pfx_kthread+0x10/0x10 [ 23.404031] ret_from_fork+0x41/0x80 [ 23.404348] ? __pfx_kthread+0x10/0x10 [ 23.404751] ret_from_fork_asm+0x1a/0x30 [ 23.405255] </TASK> [ 23.405467] [ 23.405622] Allocated by task 200: [ 23.406074] kasan_save_stack+0x3d/0x60 [ 23.406566] kasan_save_track+0x18/0x40 [ 23.407020] kasan_save_alloc_info+0x3b/0x50 [ 23.407593] __kasan_kmalloc+0xb7/0xc0 [ 23.408019] __kmalloc_cache_noprof+0x184/0x410 [ 23.408546] kmalloc_double_kzfree+0xaa/0x360 [ 23.408843] kunit_try_run_case+0x1b3/0x490 [ 23.409378] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.410065] kthread+0x257/0x310 [ 23.410567] ret_from_fork+0x41/0x80 [ 23.410885] ret_from_fork_asm+0x1a/0x30 [ 23.411576] [ 23.411724] Freed by task 200: [ 23.412116] kasan_save_stack+0x3d/0x60 [ 23.412486] kasan_save_track+0x18/0x40 [ 23.412843] kasan_save_free_info+0x3f/0x60 [ 23.413174] __kasan_slab_free+0x56/0x70 [ 23.413645] kfree+0x123/0x3f0 [ 23.414111] kfree_sensitive+0x67/0x90 [ 23.414598] kmalloc_double_kzfree+0x12c/0x360 [ 23.415036] kunit_try_run_case+0x1b3/0x490 [ 23.415410] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 23.416332] kthread+0x257/0x310 [ 23.416713] ret_from_fork+0x41/0x80 [ 23.417306] ret_from_fork_asm+0x1a/0x30 [ 23.417588] [ 23.417743] The buggy address belongs to the object at ffff888101adf0e0 [ 23.417743] which belongs to the cache kmalloc-16 of size 16 [ 23.418780] The buggy address is located 0 bytes inside of [ 23.418780] freed 16-byte region [ffff888101adf0e0, ffff888101adf0f0) [ 23.419966] [ 23.420128] The buggy address belongs to the physical page: [ 23.420753] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101adf [ 23.421702] flags: 0x200000000000000(node=0|zone=2) [ 23.422228] page_type: f5(slab) [ 23.422620] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 23.423319] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 23.423854] page dumped because: kasan: bad access detected [ 23.424191] [ 23.424437] Memory state around the buggy address: [ 23.425063] ffff888101adef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.425758] ffff888101adf000: fa fb fc fc 00 04 fc fc 00 05 fc fc fa fb fc fc [ 23.426393] >ffff888101adf080: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 23.427148] ^ [ 23.427574] ffff888101adf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.428420] ffff888101adf180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.429218] ==================================================================