Date
July 6, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.531883] ================================================================== [ 19.531961] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.532032] Read of size 1 at addr fff00000c1b58b40 by task kunit_try_catch/215 [ 19.532082] [ 19.532123] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.532220] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.532248] Hardware name: linux,dummy-virt (DT) [ 19.532281] Call trace: [ 19.532307] show_stack+0x20/0x38 (C) [ 19.532363] dump_stack_lvl+0x8c/0xd0 [ 19.532412] print_report+0x118/0x608 [ 19.532457] kasan_report+0xdc/0x128 [ 19.532502] __kasan_check_byte+0x54/0x70 [ 19.532548] kmem_cache_destroy+0x34/0x218 [ 19.532594] kmem_cache_double_destroy+0x174/0x300 [ 19.532647] kunit_try_run_case+0x170/0x3f0 [ 19.532696] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.532747] kthread+0x328/0x630 [ 19.532790] ret_from_fork+0x10/0x20 [ 19.532837] [ 19.532856] Allocated by task 215: [ 19.532885] kasan_save_stack+0x3c/0x68 [ 19.532925] kasan_save_track+0x20/0x40 [ 19.532964] kasan_save_alloc_info+0x40/0x58 [ 19.533003] __kasan_slab_alloc+0xa8/0xb0 [ 19.533041] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.533085] __kmem_cache_create_args+0x178/0x280 [ 19.533125] kmem_cache_double_destroy+0xc0/0x300 [ 19.533162] kunit_try_run_case+0x170/0x3f0 [ 19.533209] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.533251] kthread+0x328/0x630 [ 19.533284] ret_from_fork+0x10/0x20 [ 19.533319] [ 19.533337] Freed by task 215: [ 19.533364] kasan_save_stack+0x3c/0x68 [ 19.533400] kasan_save_track+0x20/0x40 [ 19.533437] kasan_save_free_info+0x4c/0x78 [ 19.533505] __kasan_slab_free+0x6c/0x98 [ 19.533553] kmem_cache_free+0x260/0x468 [ 19.533591] slab_kmem_cache_release+0x38/0x50 [ 19.533628] kmem_cache_release+0x1c/0x30 [ 19.533665] kobject_put+0x17c/0x420 [ 19.533700] sysfs_slab_release+0x1c/0x30 [ 19.533737] kmem_cache_destroy+0x118/0x218 [ 19.533773] kmem_cache_double_destroy+0x128/0x300 [ 19.533813] kunit_try_run_case+0x170/0x3f0 [ 19.533851] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.533897] kthread+0x328/0x630 [ 19.533929] ret_from_fork+0x10/0x20 [ 19.533964] [ 19.533983] The buggy address belongs to the object at fff00000c1b58b40 [ 19.533983] which belongs to the cache kmem_cache of size 208 [ 19.534040] The buggy address is located 0 bytes inside of [ 19.534040] freed 208-byte region [fff00000c1b58b40, fff00000c1b58c10) [ 19.534099] [ 19.534121] The buggy address belongs to the physical page: [ 19.534153] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101b58 [ 19.534216] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.534268] page_type: f5(slab) [ 19.534308] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.534357] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.534398] page dumped because: kasan: bad access detected [ 19.534436] [ 19.534453] Memory state around the buggy address: [ 19.534487] fff00000c1b58a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.534534] fff00000c1b58a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.534576] >fff00000c1b58b00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.534614] ^ [ 19.534650] fff00000c1b58b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.534692] fff00000c1b58c00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.534734] ==================================================================
[ 12.465446] ================================================================== [ 12.465944] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.466214] Read of size 1 at addr ffff888101dc2640 by task kunit_try_catch/232 [ 12.466568] [ 12.466675] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.466725] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.466738] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.466761] Call Trace: [ 12.466776] <TASK> [ 12.466796] dump_stack_lvl+0x73/0xb0 [ 12.466831] print_report+0xd1/0x650 [ 12.466854] ? __virt_addr_valid+0x1db/0x2d0 [ 12.466880] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.466904] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.466927] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.466964] kasan_report+0x141/0x180 [ 12.466986] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.467013] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.467039] __kasan_check_byte+0x3d/0x50 [ 12.467062] kmem_cache_destroy+0x25/0x1d0 [ 12.467086] kmem_cache_double_destroy+0x1bf/0x380 [ 12.467113] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.467139] ? finish_task_switch.isra.0+0x153/0x700 [ 12.467162] ? __switch_to+0x47/0xf50 [ 12.467192] ? __pfx_read_tsc+0x10/0x10 [ 12.467213] ? ktime_get_ts64+0x86/0x230 [ 12.467238] kunit_try_run_case+0x1a5/0x480 [ 12.467265] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.467287] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.467316] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.467550] ? __kthread_parkme+0x82/0x180 [ 12.467583] ? preempt_count_sub+0x50/0x80 [ 12.467607] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.467632] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.467656] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.467679] kthread+0x337/0x6f0 [ 12.467699] ? trace_preempt_on+0x20/0xc0 [ 12.467723] ? __pfx_kthread+0x10/0x10 [ 12.467744] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.467765] ? calculate_sigpending+0x7b/0xa0 [ 12.467790] ? __pfx_kthread+0x10/0x10 [ 12.467811] ret_from_fork+0x116/0x1d0 [ 12.467830] ? __pfx_kthread+0x10/0x10 [ 12.467850] ret_from_fork_asm+0x1a/0x30 [ 12.467882] </TASK> [ 12.467894] [ 12.478050] Allocated by task 232: [ 12.478327] kasan_save_stack+0x45/0x70 [ 12.478853] kasan_save_track+0x18/0x40 [ 12.479061] kasan_save_alloc_info+0x3b/0x50 [ 12.479282] __kasan_slab_alloc+0x91/0xa0 [ 12.479450] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.479745] __kmem_cache_create_args+0x169/0x240 [ 12.480006] kmem_cache_double_destroy+0xd5/0x380 [ 12.480424] kunit_try_run_case+0x1a5/0x480 [ 12.480698] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.480997] kthread+0x337/0x6f0 [ 12.481205] ret_from_fork+0x116/0x1d0 [ 12.481354] ret_from_fork_asm+0x1a/0x30 [ 12.481567] [ 12.481781] Freed by task 232: [ 12.481954] kasan_save_stack+0x45/0x70 [ 12.482193] kasan_save_track+0x18/0x40 [ 12.482388] kasan_save_free_info+0x3f/0x60 [ 12.482747] __kasan_slab_free+0x56/0x70 [ 12.482975] kmem_cache_free+0x249/0x420 [ 12.483202] slab_kmem_cache_release+0x2e/0x40 [ 12.483409] kmem_cache_release+0x16/0x20 [ 12.483627] kobject_put+0x181/0x450 [ 12.483834] sysfs_slab_release+0x16/0x20 [ 12.484044] kmem_cache_destroy+0xf0/0x1d0 [ 12.484388] kmem_cache_double_destroy+0x14e/0x380 [ 12.484663] kunit_try_run_case+0x1a5/0x480 [ 12.484914] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.485192] kthread+0x337/0x6f0 [ 12.485391] ret_from_fork+0x116/0x1d0 [ 12.485580] ret_from_fork_asm+0x1a/0x30 [ 12.485777] [ 12.485856] The buggy address belongs to the object at ffff888101dc2640 [ 12.485856] which belongs to the cache kmem_cache of size 208 [ 12.486513] The buggy address is located 0 bytes inside of [ 12.486513] freed 208-byte region [ffff888101dc2640, ffff888101dc2710) [ 12.486999] [ 12.487104] The buggy address belongs to the physical page: [ 12.487639] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101dc2 [ 12.487996] flags: 0x200000000000000(node=0|zone=2) [ 12.488168] page_type: f5(slab) [ 12.488431] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.488782] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.489253] page dumped because: kasan: bad access detected [ 12.489578] [ 12.489654] Memory state around the buggy address: [ 12.489890] ffff888101dc2500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.490264] ffff888101dc2580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.490661] >ffff888101dc2600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.490977] ^ [ 12.491157] ffff888101dc2680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.491698] ffff888101dc2700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.492247] ==================================================================