Date
July 5, 2025, 5:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.464177] ================================================================== [ 19.464248] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.464320] Read of size 1 at addr fff00000c5ca5a00 by task kunit_try_catch/215 [ 19.464369] [ 19.464411] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.464495] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.464523] Hardware name: linux,dummy-virt (DT) [ 19.464556] Call trace: [ 19.464579] show_stack+0x20/0x38 (C) [ 19.464644] dump_stack_lvl+0x8c/0xd0 [ 19.464696] print_report+0x118/0x608 [ 19.464756] kasan_report+0xdc/0x128 [ 19.464800] __kasan_check_byte+0x54/0x70 [ 19.464845] kmem_cache_destroy+0x34/0x218 [ 19.464908] kmem_cache_double_destroy+0x174/0x300 [ 19.464954] kunit_try_run_case+0x170/0x3f0 [ 19.465110] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.465164] kthread+0x328/0x630 [ 19.465207] ret_from_fork+0x10/0x20 [ 19.465255] [ 19.465273] Allocated by task 215: [ 19.465304] kasan_save_stack+0x3c/0x68 [ 19.465356] kasan_save_track+0x20/0x40 [ 19.465414] kasan_save_alloc_info+0x40/0x58 [ 19.465491] __kasan_slab_alloc+0xa8/0xb0 [ 19.465598] kmem_cache_alloc_noprof+0x10c/0x398 [ 19.465641] __kmem_cache_create_args+0x178/0x280 [ 19.465713] kmem_cache_double_destroy+0xc0/0x300 [ 19.465778] kunit_try_run_case+0x170/0x3f0 [ 19.465817] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.465994] kthread+0x328/0x630 [ 19.466033] ret_from_fork+0x10/0x20 [ 19.466167] [ 19.466215] Freed by task 215: [ 19.466264] kasan_save_stack+0x3c/0x68 [ 19.466306] kasan_save_track+0x20/0x40 [ 19.466342] kasan_save_free_info+0x4c/0x78 [ 19.466428] __kasan_slab_free+0x6c/0x98 [ 19.466526] kmem_cache_free+0x260/0x468 [ 19.466590] slab_kmem_cache_release+0x38/0x50 [ 19.466630] kmem_cache_release+0x1c/0x30 [ 19.466809] kobject_put+0x17c/0x420 [ 19.466887] sysfs_slab_release+0x1c/0x30 [ 19.467081] kmem_cache_destroy+0x118/0x218 [ 19.467121] kmem_cache_double_destroy+0x128/0x300 [ 19.467161] kunit_try_run_case+0x170/0x3f0 [ 19.467201] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.467457] kthread+0x328/0x630 [ 19.467653] ret_from_fork+0x10/0x20 [ 19.467728] [ 19.467932] The buggy address belongs to the object at fff00000c5ca5a00 [ 19.467932] which belongs to the cache kmem_cache of size 208 [ 19.467993] The buggy address is located 0 bytes inside of [ 19.467993] freed 208-byte region [fff00000c5ca5a00, fff00000c5ca5ad0) [ 19.468190] [ 19.468262] The buggy address belongs to the physical page: [ 19.468470] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105ca5 [ 19.468561] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.468665] page_type: f5(slab) [ 19.468752] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.468801] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.469008] page dumped because: kasan: bad access detected [ 19.469211] [ 19.469262] Memory state around the buggy address: [ 19.469389] fff00000c5ca5900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.469530] fff00000c5ca5980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.469573] >fff00000c5ca5a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.469775] ^ [ 19.469936] fff00000c5ca5a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.470054] fff00000c5ca5b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.470142] ==================================================================
[ 12.452054] ================================================================== [ 12.453193] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.453478] Read of size 1 at addr ffff888101690780 by task kunit_try_catch/233 [ 12.453721] [ 12.453835] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.453885] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.453898] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.453921] Call Trace: [ 12.453935] <TASK> [ 12.453979] dump_stack_lvl+0x73/0xb0 [ 12.454010] print_report+0xd1/0x650 [ 12.454033] ? __virt_addr_valid+0x1db/0x2d0 [ 12.454057] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.454081] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.454103] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.454127] kasan_report+0x141/0x180 [ 12.454148] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.454175] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.454200] __kasan_check_byte+0x3d/0x50 [ 12.454221] kmem_cache_destroy+0x25/0x1d0 [ 12.454244] kmem_cache_double_destroy+0x1bf/0x380 [ 12.454268] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.454291] ? finish_task_switch.isra.0+0x153/0x700 [ 12.454313] ? __switch_to+0x47/0xf50 [ 12.454342] ? __pfx_read_tsc+0x10/0x10 [ 12.454364] ? ktime_get_ts64+0x86/0x230 [ 12.454547] kunit_try_run_case+0x1a5/0x480 [ 12.454661] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.454685] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.454709] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.454732] ? __kthread_parkme+0x82/0x180 [ 12.454753] ? preempt_count_sub+0x50/0x80 [ 12.454776] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.454799] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.454822] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.454844] kthread+0x337/0x6f0 [ 12.454864] ? trace_preempt_on+0x20/0xc0 [ 12.454886] ? __pfx_kthread+0x10/0x10 [ 12.454906] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.454927] ? calculate_sigpending+0x7b/0xa0 [ 12.454951] ? __pfx_kthread+0x10/0x10 [ 12.454973] ret_from_fork+0x116/0x1d0 [ 12.454990] ? __pfx_kthread+0x10/0x10 [ 12.455010] ret_from_fork_asm+0x1a/0x30 [ 12.455041] </TASK> [ 12.455053] [ 12.468023] Allocated by task 233: [ 12.468384] kasan_save_stack+0x45/0x70 [ 12.468699] kasan_save_track+0x18/0x40 [ 12.469093] kasan_save_alloc_info+0x3b/0x50 [ 12.469364] __kasan_slab_alloc+0x91/0xa0 [ 12.469938] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.470293] __kmem_cache_create_args+0x169/0x240 [ 12.470657] kmem_cache_double_destroy+0xd5/0x380 [ 12.471043] kunit_try_run_case+0x1a5/0x480 [ 12.471192] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.471734] kthread+0x337/0x6f0 [ 12.472034] ret_from_fork+0x116/0x1d0 [ 12.472377] ret_from_fork_asm+0x1a/0x30 [ 12.472657] [ 12.472746] Freed by task 233: [ 12.473026] kasan_save_stack+0x45/0x70 [ 12.473399] kasan_save_track+0x18/0x40 [ 12.473580] kasan_save_free_info+0x3f/0x60 [ 12.473961] __kasan_slab_free+0x56/0x70 [ 12.474415] kmem_cache_free+0x249/0x420 [ 12.474861] slab_kmem_cache_release+0x2e/0x40 [ 12.475088] kmem_cache_release+0x16/0x20 [ 12.475471] kobject_put+0x181/0x450 [ 12.475840] sysfs_slab_release+0x16/0x20 [ 12.476255] kmem_cache_destroy+0xf0/0x1d0 [ 12.476551] kmem_cache_double_destroy+0x14e/0x380 [ 12.476777] kunit_try_run_case+0x1a5/0x480 [ 12.477149] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.477841] kthread+0x337/0x6f0 [ 12.477980] ret_from_fork+0x116/0x1d0 [ 12.478116] ret_from_fork_asm+0x1a/0x30 [ 12.478409] [ 12.478587] The buggy address belongs to the object at ffff888101690780 [ 12.478587] which belongs to the cache kmem_cache of size 208 [ 12.479863] The buggy address is located 0 bytes inside of [ 12.479863] freed 208-byte region [ffff888101690780, ffff888101690850) [ 12.480918] [ 12.481061] The buggy address belongs to the physical page: [ 12.481400] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101690 [ 12.482326] flags: 0x200000000000000(node=0|zone=2) [ 12.482743] page_type: f5(slab) [ 12.482873] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.483105] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.483354] page dumped because: kasan: bad access detected [ 12.483776] [ 12.483857] Memory state around the buggy address: [ 12.484010] ffff888101690680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.484331] ffff888101690700: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.484637] >ffff888101690780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.485529] ^ [ 12.485707] ffff888101690800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.486000] ffff888101690880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.486407] ==================================================================