Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.863869] ================================================================== [ 16.863955] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 16.864032] Read of size 1 at addr fff00000c1b0b640 by task kunit_try_catch/216 [ 16.864085] [ 16.864128] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.864236] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.864264] Hardware name: linux,dummy-virt (DT) [ 16.864298] Call trace: [ 16.864322] show_stack+0x20/0x38 (C) [ 16.864375] dump_stack_lvl+0x8c/0xd0 [ 16.864426] print_report+0x118/0x5d0 [ 16.864478] kasan_report+0xdc/0x128 [ 16.864521] __kasan_check_byte+0x54/0x70 [ 16.864567] kmem_cache_destroy+0x34/0x218 [ 16.864615] kmem_cache_double_destroy+0x174/0x300 [ 16.864661] kunit_try_run_case+0x170/0x3f0 [ 16.864711] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.864764] kthread+0x328/0x630 [ 16.864807] ret_from_fork+0x10/0x20 [ 16.864855] [ 16.864873] Allocated by task 216: [ 16.864903] kasan_save_stack+0x3c/0x68 [ 16.864944] kasan_save_track+0x20/0x40 [ 16.865010] kasan_save_alloc_info+0x40/0x58 [ 16.865049] __kasan_slab_alloc+0xa8/0xb0 [ 16.865087] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.865129] __kmem_cache_create_args+0x178/0x280 [ 16.865169] kmem_cache_double_destroy+0xc0/0x300 [ 16.865216] kunit_try_run_case+0x170/0x3f0 [ 16.865254] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.865296] kthread+0x328/0x630 [ 16.865328] ret_from_fork+0x10/0x20 [ 16.865363] [ 16.865381] Freed by task 216: [ 16.865407] kasan_save_stack+0x3c/0x68 [ 16.865444] kasan_save_track+0x20/0x40 [ 16.865481] kasan_save_free_info+0x4c/0x78 [ 16.865519] __kasan_slab_free+0x6c/0x98 [ 16.865557] kmem_cache_free+0x260/0x468 [ 16.865593] slab_kmem_cache_release+0x38/0x50 [ 16.865634] kmem_cache_release+0x1c/0x30 [ 16.865669] kobject_put+0x17c/0x420 [ 16.865706] sysfs_slab_release+0x1c/0x30 [ 16.865742] kmem_cache_destroy+0x118/0x218 [ 16.865780] kmem_cache_double_destroy+0x128/0x300 [ 16.865820] kunit_try_run_case+0x170/0x3f0 [ 16.865856] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.865901] kthread+0x328/0x630 [ 16.865934] ret_from_fork+0x10/0x20 [ 16.865970] [ 16.865989] The buggy address belongs to the object at fff00000c1b0b640 [ 16.865989] which belongs to the cache kmem_cache of size 208 [ 16.866048] The buggy address is located 0 bytes inside of [ 16.866048] freed 208-byte region [fff00000c1b0b640, fff00000c1b0b710) [ 16.866110] [ 16.866131] The buggy address belongs to the physical page: [ 16.866166] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b0b [ 16.866230] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.866284] page_type: f5(slab) [ 16.866326] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 16.866377] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 16.866420] page dumped because: kasan: bad access detected [ 16.866452] [ 16.866472] Memory state around the buggy address: [ 16.866505] fff00000c1b0b500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 16.866550] fff00000c1b0b580: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 16.866593] >fff00000c1b0b600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 16.866634] ^ [ 16.866668] fff00000c1b0b680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.866712] fff00000c1b0b700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.866752] ==================================================================
[ 13.396306] ================================================================== [ 13.396787] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.397180] Read of size 1 at addr ffff888101bdedc0 by task kunit_try_catch/232 [ 13.397455] [ 13.397621] CPU: 1 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.397667] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.397679] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.397701] Call Trace: [ 13.397714] <TASK> [ 13.397729] dump_stack_lvl+0x73/0xb0 [ 13.397772] print_report+0xd1/0x610 [ 13.397795] ? __virt_addr_valid+0x1db/0x2d0 [ 13.397819] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.397845] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.397870] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.397895] kasan_report+0x141/0x180 [ 13.397918] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.397946] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.397972] __kasan_check_byte+0x3d/0x50 [ 13.397994] kmem_cache_destroy+0x25/0x1d0 [ 13.398018] kmem_cache_double_destroy+0x1bf/0x380 [ 13.398083] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.398109] ? finish_task_switch.isra.0+0x153/0x700 [ 13.398133] ? __switch_to+0x47/0xf50 [ 13.398162] ? __pfx_read_tsc+0x10/0x10 [ 13.398184] ? ktime_get_ts64+0x86/0x230 [ 13.398209] kunit_try_run_case+0x1a5/0x480 [ 13.398235] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.398258] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.398284] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.398309] ? __kthread_parkme+0x82/0x180 [ 13.398330] ? preempt_count_sub+0x50/0x80 [ 13.398353] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.398379] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.398409] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.398435] kthread+0x337/0x6f0 [ 13.398456] ? trace_preempt_on+0x20/0xc0 [ 13.398480] ? __pfx_kthread+0x10/0x10 [ 13.398501] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.398541] ? calculate_sigpending+0x7b/0xa0 [ 13.398568] ? __pfx_kthread+0x10/0x10 [ 13.398589] ret_from_fork+0x116/0x1d0 [ 13.398609] ? __pfx_kthread+0x10/0x10 [ 13.398630] ret_from_fork_asm+0x1a/0x30 [ 13.398662] </TASK> [ 13.398672] [ 13.407501] Allocated by task 232: [ 13.407694] kasan_save_stack+0x45/0x70 [ 13.407886] kasan_save_track+0x18/0x40 [ 13.408078] kasan_save_alloc_info+0x3b/0x50 [ 13.408310] __kasan_slab_alloc+0x91/0xa0 [ 13.408600] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.408832] __kmem_cache_create_args+0x169/0x240 [ 13.409058] kmem_cache_double_destroy+0xd5/0x380 [ 13.409310] kunit_try_run_case+0x1a5/0x480 [ 13.409628] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.409889] kthread+0x337/0x6f0 [ 13.410047] ret_from_fork+0x116/0x1d0 [ 13.410180] ret_from_fork_asm+0x1a/0x30 [ 13.410319] [ 13.410538] Freed by task 232: [ 13.410729] kasan_save_stack+0x45/0x70 [ 13.410942] kasan_save_track+0x18/0x40 [ 13.411158] kasan_save_free_info+0x3f/0x60 [ 13.411493] __kasan_slab_free+0x56/0x70 [ 13.411708] kmem_cache_free+0x249/0x420 [ 13.411864] slab_kmem_cache_release+0x2e/0x40 [ 13.412018] kmem_cache_release+0x16/0x20 [ 13.412178] kobject_put+0x181/0x450 [ 13.412471] sysfs_slab_release+0x16/0x20 [ 13.412720] kmem_cache_destroy+0xf0/0x1d0 [ 13.412982] kmem_cache_double_destroy+0x14e/0x380 [ 13.413260] kunit_try_run_case+0x1a5/0x480 [ 13.413534] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.413716] kthread+0x337/0x6f0 [ 13.413882] ret_from_fork+0x116/0x1d0 [ 13.414097] ret_from_fork_asm+0x1a/0x30 [ 13.414318] [ 13.414455] The buggy address belongs to the object at ffff888101bdedc0 [ 13.414455] which belongs to the cache kmem_cache of size 208 [ 13.415420] The buggy address is located 0 bytes inside of [ 13.415420] freed 208-byte region [ffff888101bdedc0, ffff888101bdee90) [ 13.416123] [ 13.416216] The buggy address belongs to the physical page: [ 13.416394] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101bde [ 13.416851] flags: 0x200000000000000(node=0|zone=2) [ 13.417116] page_type: f5(slab) [ 13.417408] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.417786] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.418047] page dumped because: kasan: bad access detected [ 13.418274] [ 13.418615] Memory state around the buggy address: [ 13.418868] ffff888101bdec80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.419100] ffff888101bded00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.419316] >ffff888101bded80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.419620] ^ [ 13.420063] ffff888101bdee00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.420463] ffff888101bdee80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.420690] ==================================================================