Date
July 3, 2025, 3:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.921264] ================================================================== [ 16.921354] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 16.921432] Read of size 1 at addr fff00000c78a73c0 by task kunit_try_catch/218 [ 16.921484] [ 16.921527] CPU: 1 UID: 0 PID: 218 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 16.921614] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.921642] Hardware name: linux,dummy-virt (DT) [ 16.921676] Call trace: [ 16.921702] show_stack+0x20/0x38 (C) [ 16.921755] dump_stack_lvl+0x8c/0xd0 [ 16.921807] print_report+0x118/0x608 [ 16.921852] kasan_report+0xdc/0x128 [ 16.921896] __kasan_check_byte+0x54/0x70 [ 16.921941] kmem_cache_destroy+0x34/0x218 [ 16.922001] kmem_cache_double_destroy+0x174/0x300 [ 16.922051] kunit_try_run_case+0x170/0x3f0 [ 16.922101] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.922183] kthread+0x328/0x630 [ 16.922229] ret_from_fork+0x10/0x20 [ 16.922279] [ 16.922298] Allocated by task 218: [ 16.922329] kasan_save_stack+0x3c/0x68 [ 16.922368] kasan_save_track+0x20/0x40 [ 16.922403] kasan_save_alloc_info+0x40/0x58 [ 16.922445] __kasan_slab_alloc+0xa8/0xb0 [ 16.922482] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.922522] __kmem_cache_create_args+0x178/0x280 [ 16.922558] kmem_cache_double_destroy+0xc0/0x300 [ 16.922599] kunit_try_run_case+0x170/0x3f0 [ 16.922638] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.922682] kthread+0x328/0x630 [ 16.922716] ret_from_fork+0x10/0x20 [ 16.922753] [ 16.922771] Freed by task 218: [ 16.922796] kasan_save_stack+0x3c/0x68 [ 16.922831] kasan_save_track+0x20/0x40 [ 16.922865] kasan_save_free_info+0x4c/0x78 [ 16.922903] __kasan_slab_free+0x6c/0x98 [ 16.922937] kmem_cache_free+0x260/0x468 [ 16.922982] slab_kmem_cache_release+0x38/0x50 [ 16.923019] kmem_cache_release+0x1c/0x30 [ 16.923058] kobject_put+0x17c/0x420 [ 16.923095] sysfs_slab_release+0x1c/0x30 [ 16.923129] kmem_cache_destroy+0x118/0x218 [ 16.923165] kmem_cache_double_destroy+0x128/0x300 [ 16.923205] kunit_try_run_case+0x170/0x3f0 [ 16.923244] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.923288] kthread+0x328/0x630 [ 16.923322] ret_from_fork+0x10/0x20 [ 16.923357] [ 16.923376] The buggy address belongs to the object at fff00000c78a73c0 [ 16.923376] which belongs to the cache kmem_cache of size 208 [ 16.923432] The buggy address is located 0 bytes inside of [ 16.923432] freed 208-byte region [fff00000c78a73c0, fff00000c78a7490) [ 16.923492] [ 16.923513] The buggy address belongs to the physical page: [ 16.923546] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078a7 [ 16.923597] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.923650] page_type: f5(slab) [ 16.923691] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 16.923740] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 16.923782] page dumped because: kasan: bad access detected [ 16.923814] [ 16.923831] Memory state around the buggy address: [ 16.923866] fff00000c78a7280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.923909] fff00000c78a7300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 16.923963] >fff00000c78a7380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 16.924001] ^ [ 16.924035] fff00000c78a7400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.924078] fff00000c78a7480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.924116] ==================================================================
[ 12.008686] ================================================================== [ 12.009197] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.010581] Read of size 1 at addr ffff88810111e3c0 by task kunit_try_catch/234 [ 12.011389] [ 12.011656] CPU: 0 UID: 0 PID: 234 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 12.011713] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.011726] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.011751] Call Trace: [ 12.011765] <TASK> [ 12.011785] dump_stack_lvl+0x73/0xb0 [ 12.011816] print_report+0xd1/0x650 [ 12.011841] ? __virt_addr_valid+0x1db/0x2d0 [ 12.011866] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.011887] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.011910] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.011932] kasan_report+0x141/0x180 [ 12.011954] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.011979] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.012000] __kasan_check_byte+0x3d/0x50 [ 12.012022] kmem_cache_destroy+0x25/0x1d0 [ 12.012047] kmem_cache_double_destroy+0x1bf/0x380 [ 12.012068] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.012089] ? finish_task_switch.isra.0+0x153/0x700 [ 12.012116] ? __switch_to+0x5d9/0xf60 [ 12.012138] ? dequeue_task_fair+0x166/0x4e0 [ 12.012165] ? __pfx_read_tsc+0x10/0x10 [ 12.012186] ? ktime_get_ts64+0x86/0x230 [ 12.012211] kunit_try_run_case+0x1a5/0x480 [ 12.012249] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.012272] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.012296] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.012320] ? __kthread_parkme+0x82/0x180 [ 12.012343] ? preempt_count_sub+0x50/0x80 [ 12.012368] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.012392] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.012414] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.012438] kthread+0x337/0x6f0 [ 12.012456] ? trace_preempt_on+0x20/0xc0 [ 12.012479] ? __pfx_kthread+0x10/0x10 [ 12.012516] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.012538] ? calculate_sigpending+0x7b/0xa0 [ 12.012560] ? __pfx_kthread+0x10/0x10 [ 12.012580] ret_from_fork+0x41/0x80 [ 12.012601] ? __pfx_kthread+0x10/0x10 [ 12.012619] ret_from_fork_asm+0x1a/0x30 [ 12.012651] </TASK> [ 12.012663] [ 12.021491] Allocated by task 234: [ 12.021637] kasan_save_stack+0x45/0x70 [ 12.021847] kasan_save_track+0x18/0x40 [ 12.022120] kasan_save_alloc_info+0x3b/0x50 [ 12.022454] __kasan_slab_alloc+0x91/0xa0 [ 12.022597] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.023012] __kmem_cache_create_args+0x169/0x240 [ 12.023246] kmem_cache_double_destroy+0xd5/0x380 [ 12.023930] kunit_try_run_case+0x1a5/0x480 [ 12.024136] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.024763] kthread+0x337/0x6f0 [ 12.024984] ret_from_fork+0x41/0x80 [ 12.025162] ret_from_fork_asm+0x1a/0x30 [ 12.025378] [ 12.025565] Freed by task 234: [ 12.025731] kasan_save_stack+0x45/0x70 [ 12.025887] kasan_save_track+0x18/0x40 [ 12.026102] kasan_save_free_info+0x3f/0x60 [ 12.026389] __kasan_slab_free+0x56/0x70 [ 12.026551] kmem_cache_free+0x249/0x420 [ 12.026825] slab_kmem_cache_release+0x2e/0x40 [ 12.026996] kmem_cache_release+0x16/0x20 [ 12.027197] kobject_put+0x181/0x450 [ 12.027457] sysfs_slab_release+0x16/0x20 [ 12.027626] kmem_cache_destroy+0xf0/0x1d0 [ 12.027978] kmem_cache_double_destroy+0x14e/0x380 [ 12.028156] kunit_try_run_case+0x1a5/0x480 [ 12.028394] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.029192] kthread+0x337/0x6f0 [ 12.029384] ret_from_fork+0x41/0x80 [ 12.029565] ret_from_fork_asm+0x1a/0x30 [ 12.030096] [ 12.030382] The buggy address belongs to the object at ffff88810111e3c0 [ 12.030382] which belongs to the cache kmem_cache of size 208 [ 12.031406] The buggy address is located 0 bytes inside of [ 12.031406] freed 208-byte region [ffff88810111e3c0, ffff88810111e490) [ 12.032170] [ 12.032466] The buggy address belongs to the physical page: [ 12.032709] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10111e [ 12.033021] flags: 0x200000000000000(node=0|zone=2) [ 12.033307] page_type: f5(slab) [ 12.033563] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.034167] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.034773] page dumped because: kasan: bad access detected [ 12.035100] [ 12.035174] Memory state around the buggy address: [ 12.035516] ffff88810111e280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.036178] ffff88810111e300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.036945] >ffff88810111e380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 12.037482] ^ [ 12.038106] ffff88810111e400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.038357] ffff88810111e480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.038575] ==================================================================