Date
June 24, 2025, 12:47 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 26.154195] ================================================================== [ 26.154361] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 26.155242] Read of size 1 at addr fff00000c3f5ab40 by task kunit_try_catch/217 [ 26.155531] [ 26.155628] CPU: 0 UID: 0 PID: 217 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT [ 26.156920] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.157059] Hardware name: linux,dummy-virt (DT) [ 26.157408] Call trace: [ 26.157506] show_stack+0x20/0x38 (C) [ 26.157856] dump_stack_lvl+0x8c/0xd0 [ 26.158139] print_report+0x118/0x608 [ 26.158348] kasan_report+0xdc/0x128 [ 26.158556] __kasan_check_byte+0x54/0x70 [ 26.158674] kmem_cache_destroy+0x34/0x218 [ 26.158806] kmem_cache_double_destroy+0x174/0x300 [ 26.158965] kunit_try_run_case+0x170/0x3f0 [ 26.159090] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.159224] kthread+0x328/0x630 [ 26.159336] ret_from_fork+0x10/0x20 [ 26.159475] [ 26.159533] Allocated by task 217: [ 26.159616] kasan_save_stack+0x3c/0x68 [ 26.159799] kasan_save_track+0x20/0x40 [ 26.159973] kasan_save_alloc_info+0x40/0x58 [ 26.160114] __kasan_slab_alloc+0xa8/0xb0 [ 26.160219] kmem_cache_alloc_noprof+0x10c/0x398 [ 26.160333] __kmem_cache_create_args+0x178/0x280 [ 26.160478] kmem_cache_double_destroy+0xc0/0x300 [ 26.160589] kunit_try_run_case+0x170/0x3f0 [ 26.160858] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.161101] kthread+0x328/0x630 [ 26.161254] ret_from_fork+0x10/0x20 [ 26.161351] [ 26.161418] Freed by task 217: [ 26.161691] kasan_save_stack+0x3c/0x68 [ 26.161884] kasan_save_track+0x20/0x40 [ 26.162203] kasan_save_free_info+0x4c/0x78 [ 26.162485] __kasan_slab_free+0x6c/0x98 [ 26.162918] kmem_cache_free+0x260/0x468 [ 26.163561] slab_kmem_cache_release+0x38/0x50 [ 26.163828] kmem_cache_release+0x1c/0x30 [ 26.164490] kobject_put+0x17c/0x420 [ 26.164787] sysfs_slab_release+0x1c/0x30 [ 26.165091] kmem_cache_destroy+0x118/0x218 [ 26.165555] kmem_cache_double_destroy+0x128/0x300 [ 26.165712] kunit_try_run_case+0x170/0x3f0 [ 26.165817] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.166432] kthread+0x328/0x630 [ 26.166898] ret_from_fork+0x10/0x20 [ 26.167162] [ 26.167212] The buggy address belongs to the object at fff00000c3f5ab40 [ 26.167212] which belongs to the cache kmem_cache of size 208 [ 26.167349] The buggy address is located 0 bytes inside of [ 26.167349] freed 208-byte region [fff00000c3f5ab40, fff00000c3f5ac10) [ 26.167519] [ 26.167574] The buggy address belongs to the physical page: [ 26.167651] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103f5a [ 26.167777] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 26.167898] page_type: f5(slab) [ 26.168760] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 26.169414] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 26.169527] page dumped because: kasan: bad access detected [ 26.169611] [ 26.170091] Memory state around the buggy address: [ 26.170442] fff00000c3f5aa00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.171060] fff00000c3f5aa80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 26.171527] >fff00000c3f5ab00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 26.171630] ^ [ 26.172170] fff00000c3f5ab80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.172336] fff00000c3f5ac00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.172602] ==================================================================
[ 12.744483] ================================================================== [ 12.745086] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.745517] Read of size 1 at addr ffff888101ab53c0 by task kunit_try_catch/235 [ 12.746244] [ 12.747119] CPU: 1 UID: 0 PID: 235 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT(voluntary) [ 12.747242] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.747258] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.747287] Call Trace: [ 12.747551] <TASK> [ 12.747609] dump_stack_lvl+0x73/0xb0 [ 12.747677] print_report+0xd1/0x650 [ 12.747704] ? __virt_addr_valid+0x1db/0x2d0 [ 12.747729] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.747749] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.747770] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.747789] kasan_report+0x141/0x180 [ 12.747810] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.747832] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.747851] __kasan_check_byte+0x3d/0x50 [ 12.747872] kmem_cache_destroy+0x25/0x1d0 [ 12.747894] kmem_cache_double_destroy+0x1bf/0x380 [ 12.747913] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.747932] ? finish_task_switch.isra.0+0x153/0x700 [ 12.747954] ? __switch_to+0x5d9/0xf60 [ 12.747975] ? dequeue_task_fair+0x166/0x4e0 [ 12.748000] ? __pfx_read_tsc+0x10/0x10 [ 12.748019] ? ktime_get_ts64+0x86/0x230 [ 12.748044] kunit_try_run_case+0x1a5/0x480 [ 12.748070] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.748089] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.748112] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.748133] ? __kthread_parkme+0x82/0x180 [ 12.748155] ? preempt_count_sub+0x50/0x80 [ 12.748177] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.748198] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.748219] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.748240] kthread+0x337/0x6f0 [ 12.748255] ? trace_preempt_on+0x20/0xc0 [ 12.748280] ? __pfx_kthread+0x10/0x10 [ 12.748309] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.748339] ? calculate_sigpending+0x7b/0xa0 [ 12.748371] ? __pfx_kthread+0x10/0x10 [ 12.748398] ret_from_fork+0x41/0x80 [ 12.748427] ? __pfx_kthread+0x10/0x10 [ 12.748451] ret_from_fork_asm+0x1a/0x30 [ 12.748501] </TASK> [ 12.748520] [ 12.761225] Allocated by task 235: [ 12.761851] kasan_save_stack+0x45/0x70 [ 12.762198] kasan_save_track+0x18/0x40 [ 12.762815] kasan_save_alloc_info+0x3b/0x50 [ 12.763072] __kasan_slab_alloc+0x91/0xa0 [ 12.763460] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.763934] __kmem_cache_create_args+0x169/0x240 [ 12.764223] kmem_cache_double_destroy+0xd5/0x380 [ 12.764588] kunit_try_run_case+0x1a5/0x480 [ 12.764967] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.765124] kthread+0x337/0x6f0 [ 12.765433] ret_from_fork+0x41/0x80 [ 12.765959] ret_from_fork_asm+0x1a/0x30 [ 12.766316] [ 12.766472] Freed by task 235: [ 12.767177] kasan_save_stack+0x45/0x70 [ 12.767345] kasan_save_track+0x18/0x40 [ 12.767695] kasan_save_free_info+0x3f/0x60 [ 12.768181] __kasan_slab_free+0x56/0x70 [ 12.768899] kmem_cache_free+0x249/0x420 [ 12.769397] slab_kmem_cache_release+0x2e/0x40 [ 12.769763] kmem_cache_release+0x16/0x20 [ 12.769959] kobject_put+0x181/0x450 [ 12.770222] sysfs_slab_release+0x16/0x20 [ 12.770784] kmem_cache_destroy+0xf0/0x1d0 [ 12.771113] kmem_cache_double_destroy+0x14e/0x380 [ 12.771564] kunit_try_run_case+0x1a5/0x480 [ 12.771867] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.772208] kthread+0x337/0x6f0 [ 12.772911] ret_from_fork+0x41/0x80 [ 12.773224] ret_from_fork_asm+0x1a/0x30 [ 12.773462] [ 12.773637] The buggy address belongs to the object at ffff888101ab53c0 [ 12.773637] which belongs to the cache kmem_cache of size 208 [ 12.774198] The buggy address is located 0 bytes inside of [ 12.774198] freed 208-byte region [ffff888101ab53c0, ffff888101ab5490) [ 12.774744] [ 12.774867] The buggy address belongs to the physical page: [ 12.775247] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101ab5 [ 12.775883] flags: 0x200000000000000(node=0|zone=2) [ 12.776245] page_type: f5(slab) [ 12.776955] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.777536] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.777984] page dumped because: kasan: bad access detected [ 12.778261] [ 12.778572] Memory state around the buggy address: [ 12.778831] ffff888101ab5280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.779234] ffff888101ab5300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.779812] >ffff888101ab5380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.780274] ^ [ 12.781079] ffff888101ab5400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.781420] ffff888101ab5480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.781949] ==================================================================