Date
June 17, 2025, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.345616] ================================================================== [ 18.345714] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.345807] Read of size 1 at addr fff00000c5a8f500 by task kunit_try_catch/224 [ 18.345861] [ 18.345906] CPU: 0 UID: 0 PID: 224 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250617 #1 PREEMPT [ 18.346016] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.346084] Hardware name: linux,dummy-virt (DT) [ 18.346121] Call trace: [ 18.346173] show_stack+0x20/0x38 (C) [ 18.346236] dump_stack_lvl+0x8c/0xd0 [ 18.346287] print_report+0x118/0x608 [ 18.346337] kasan_report+0xdc/0x128 [ 18.346384] __kasan_check_byte+0x54/0x70 [ 18.346432] kmem_cache_destroy+0x34/0x218 [ 18.346480] kmem_cache_double_destroy+0x174/0x300 [ 18.346530] kunit_try_run_case+0x170/0x3f0 [ 18.346582] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.346633] kthread+0x328/0x630 [ 18.346679] ret_from_fork+0x10/0x20 [ 18.346729] [ 18.346747] Allocated by task 224: [ 18.346780] kasan_save_stack+0x3c/0x68 [ 18.346822] kasan_save_track+0x20/0x40 [ 18.346862] kasan_save_alloc_info+0x40/0x58 [ 18.346901] __kasan_slab_alloc+0xa8/0xb0 [ 18.346950] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.346994] __kmem_cache_create_args+0x178/0x280 [ 18.347033] kmem_cache_double_destroy+0xc0/0x300 [ 18.347073] kunit_try_run_case+0x170/0x3f0 [ 18.347112] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.347155] kthread+0x328/0x630 [ 18.347189] ret_from_fork+0x10/0x20 [ 18.347225] [ 18.347243] Freed by task 224: [ 18.347271] kasan_save_stack+0x3c/0x68 [ 18.347308] kasan_save_track+0x20/0x40 [ 18.347346] kasan_save_free_info+0x4c/0x78 [ 18.347382] __kasan_slab_free+0x6c/0x98 [ 18.347420] kmem_cache_free+0x260/0x468 [ 18.347457] slab_kmem_cache_release+0x38/0x50 [ 18.347497] kmem_cache_release+0x1c/0x30 [ 18.347534] kobject_put+0x17c/0x420 [ 18.347570] sysfs_slab_release+0x1c/0x30 [ 18.347607] kmem_cache_destroy+0x118/0x218 [ 18.347647] kmem_cache_double_destroy+0x128/0x300 [ 18.347686] kunit_try_run_case+0x170/0x3f0 [ 18.347723] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.347769] kthread+0x328/0x630 [ 18.347801] ret_from_fork+0x10/0x20 [ 18.347839] [ 18.347858] The buggy address belongs to the object at fff00000c5a8f500 [ 18.347858] which belongs to the cache kmem_cache of size 208 [ 18.347918] The buggy address is located 0 bytes inside of [ 18.347918] freed 208-byte region [fff00000c5a8f500, fff00000c5a8f5d0) [ 18.347990] [ 18.348014] The buggy address belongs to the physical page: [ 18.348049] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a8f [ 18.348107] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.348163] page_type: f5(slab) [ 18.348208] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.348260] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.348303] page dumped because: kasan: bad access detected [ 18.348337] [ 18.348355] Memory state around the buggy address: [ 18.348390] fff00000c5a8f400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.348434] fff00000c5a8f480: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.348478] >fff00000c5a8f500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.348518] ^ [ 18.348545] fff00000c5a8f580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 18.348589] fff00000c5a8f600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.348627] ==================================================================
[ 19.331784] ================================================================== [ 19.332521] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 19.333209] Read of size 1 at addr ffff8881017f13c0 by task kunit_try_catch/242 [ 19.333752] [ 19.333995] CPU: 0 UID: 0 PID: 242 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250617 #1 PREEMPT(voluntary) [ 19.334156] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.334190] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 19.334247] Call Trace: [ 19.334283] <TASK> [ 19.334331] dump_stack_lvl+0x73/0xb0 [ 19.334452] print_report+0xd1/0x650 [ 19.334558] ? __virt_addr_valid+0x1db/0x2d0 [ 19.334640] ? kmem_cache_double_destroy+0x1bf/0x380 [ 19.335155] ? kasan_complete_mode_report_info+0x64/0x200 [ 19.335228] ? kmem_cache_double_destroy+0x1bf/0x380 [ 19.335307] kasan_report+0x141/0x180 [ 19.335378] ? kmem_cache_double_destroy+0x1bf/0x380 [ 19.335459] ? kmem_cache_double_destroy+0x1bf/0x380 [ 19.335535] __kasan_check_byte+0x3d/0x50 [ 19.335619] kmem_cache_destroy+0x25/0x1d0 [ 19.335693] kmem_cache_double_destroy+0x1bf/0x380 [ 19.335768] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 19.335858] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 19.335935] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 19.335981] kunit_try_run_case+0x1a5/0x480 [ 19.336019] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.336052] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 19.336083] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 19.336123] ? __kthread_parkme+0x82/0x180 [ 19.336154] ? preempt_count_sub+0x50/0x80 [ 19.336189] ? __pfx_kunit_try_run_case+0x10/0x10 [ 19.336232] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.336310] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 19.336368] kthread+0x337/0x6f0 [ 19.336398] ? trace_preempt_on+0x20/0xc0 [ 19.336435] ? __pfx_kthread+0x10/0x10 [ 19.336464] ? _raw_spin_unlock_irq+0x47/0x80 [ 19.336497] ? calculate_sigpending+0x7b/0xa0 [ 19.336532] ? __pfx_kthread+0x10/0x10 [ 19.336561] ret_from_fork+0x116/0x1d0 [ 19.336588] ? __pfx_kthread+0x10/0x10 [ 19.336618] ret_from_fork_asm+0x1a/0x30 [ 19.336661] </TASK> [ 19.336676] [ 19.354611] Allocated by task 242: [ 19.355140] kasan_save_stack+0x45/0x70 [ 19.355550] kasan_save_track+0x18/0x40 [ 19.357617] kasan_save_alloc_info+0x3b/0x50 [ 19.358937] __kasan_slab_alloc+0x91/0xa0 [ 19.359574] kmem_cache_alloc_noprof+0x123/0x3f0 [ 19.361144] __kmem_cache_create_args+0x169/0x240 [ 19.362258] kmem_cache_double_destroy+0xd5/0x380 [ 19.363496] kunit_try_run_case+0x1a5/0x480 [ 19.364536] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.365028] kthread+0x337/0x6f0 [ 19.365359] ret_from_fork+0x116/0x1d0 [ 19.365660] ret_from_fork_asm+0x1a/0x30 [ 19.365922] [ 19.366079] Freed by task 242: [ 19.366309] kasan_save_stack+0x45/0x70 [ 19.366555] kasan_save_track+0x18/0x40 [ 19.366774] kasan_save_free_info+0x3f/0x60 [ 19.369577] __kasan_slab_free+0x56/0x70 [ 19.370017] kmem_cache_free+0x249/0x420 [ 19.370866] slab_kmem_cache_release+0x2e/0x40 [ 19.371378] kmem_cache_release+0x16/0x20 [ 19.371780] kobject_put+0x181/0x450 [ 19.372449] sysfs_slab_release+0x16/0x20 [ 19.372970] kmem_cache_destroy+0xf0/0x1d0 [ 19.373523] kmem_cache_double_destroy+0x14e/0x380 [ 19.374101] kunit_try_run_case+0x1a5/0x480 [ 19.374883] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 19.375401] kthread+0x337/0x6f0 [ 19.375965] ret_from_fork+0x116/0x1d0 [ 19.376468] ret_from_fork_asm+0x1a/0x30 [ 19.377011] [ 19.377424] The buggy address belongs to the object at ffff8881017f13c0 [ 19.377424] which belongs to the cache kmem_cache of size 208 [ 19.378823] The buggy address is located 0 bytes inside of [ 19.378823] freed 208-byte region [ffff8881017f13c0, ffff8881017f1490) [ 19.380049] [ 19.380409] The buggy address belongs to the physical page: [ 19.380947] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1017f1 [ 19.381611] flags: 0x200000000000000(node=0|zone=2) [ 19.382631] page_type: f5(slab) [ 19.382928] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 19.383787] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.384551] page dumped because: kasan: bad access detected [ 19.385007] [ 19.385421] Memory state around the buggy address: [ 19.385967] ffff8881017f1280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.386849] ffff8881017f1300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.387665] >ffff8881017f1380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 19.388414] ^ [ 19.388933] ffff8881017f1400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.389642] ffff8881017f1480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.390555] ==================================================================