Date
July 20, 2025, 11:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.878095] ================================================================== [ 15.878177] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 15.878316] Free of addr fff00000c701b000 by task kunit_try_catch/209 [ 15.878382] [ 15.878630] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.878937] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.879084] Hardware name: linux,dummy-virt (DT) [ 15.879242] Call trace: [ 15.879324] show_stack+0x20/0x38 (C) [ 15.879523] dump_stack_lvl+0x8c/0xd0 [ 15.879576] print_report+0x118/0x5d0 [ 15.879650] kasan_report_invalid_free+0xc0/0xe8 [ 15.880155] check_slab_allocation+0xd4/0x108 [ 15.880257] __kasan_slab_pre_free+0x2c/0x48 [ 15.880372] kmem_cache_free+0xf0/0x468 [ 15.880484] kmem_cache_double_free+0x190/0x3c8 [ 15.880637] kunit_try_run_case+0x170/0x3f0 [ 15.881076] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.881150] kthread+0x328/0x630 [ 15.881228] ret_from_fork+0x10/0x20 [ 15.881321] [ 15.881342] Allocated by task 209: [ 15.881377] kasan_save_stack+0x3c/0x68 [ 15.881429] kasan_save_track+0x20/0x40 [ 15.881467] kasan_save_alloc_info+0x40/0x58 [ 15.881512] __kasan_slab_alloc+0xa8/0xb0 [ 15.881550] kmem_cache_alloc_noprof+0x10c/0x398 [ 15.881588] kmem_cache_double_free+0x12c/0x3c8 [ 15.881626] kunit_try_run_case+0x170/0x3f0 [ 15.881675] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.881718] kthread+0x328/0x630 [ 15.881749] ret_from_fork+0x10/0x20 [ 15.881797] [ 15.881816] Freed by task 209: [ 15.881843] kasan_save_stack+0x3c/0x68 [ 15.881880] kasan_save_track+0x20/0x40 [ 15.881927] kasan_save_free_info+0x4c/0x78 [ 15.881966] __kasan_slab_free+0x6c/0x98 [ 15.882002] kmem_cache_free+0x260/0x468 [ 15.882039] kmem_cache_double_free+0x140/0x3c8 [ 15.882077] kunit_try_run_case+0x170/0x3f0 [ 15.882114] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.882157] kthread+0x328/0x630 [ 15.882189] ret_from_fork+0x10/0x20 [ 15.882222] [ 15.882244] The buggy address belongs to the object at fff00000c701b000 [ 15.882244] which belongs to the cache test_cache of size 200 [ 15.882324] The buggy address is located 0 bytes inside of [ 15.882324] 200-byte region [fff00000c701b000, fff00000c701b0c8) [ 15.882393] [ 15.882415] The buggy address belongs to the physical page: [ 15.882448] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10701b [ 15.882515] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.882580] page_type: f5(slab) [ 15.882639] raw: 0bfffe0000000000 fff00000c700b000 dead000000000122 0000000000000000 [ 15.883118] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 15.883170] page dumped because: kasan: bad access detected [ 15.883652] [ 15.883978] Memory state around the buggy address: [ 15.884141] fff00000c701af00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.884198] fff00000c701af80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.884280] >fff00000c701b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.884603] ^ [ 15.884701] fff00000c701b080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 15.884807] fff00000c701b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.884885] ==================================================================
[ 13.000186] ================================================================== [ 13.000654] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.000990] Free of addr ffff888102740000 by task kunit_try_catch/226 [ 13.001508] [ 13.001642] CPU: 1 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.001687] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.001698] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.001717] Call Trace: [ 13.001729] <TASK> [ 13.001744] dump_stack_lvl+0x73/0xb0 [ 13.001773] print_report+0xd1/0x610 [ 13.001794] ? __virt_addr_valid+0x1db/0x2d0 [ 13.002200] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.002229] ? kmem_cache_double_free+0x1e5/0x480 [ 13.002255] kasan_report_invalid_free+0x10a/0x130 [ 13.002278] ? kmem_cache_double_free+0x1e5/0x480 [ 13.002303] ? kmem_cache_double_free+0x1e5/0x480 [ 13.002335] check_slab_allocation+0x101/0x130 [ 13.002366] __kasan_slab_pre_free+0x28/0x40 [ 13.002386] kmem_cache_free+0xed/0x420 [ 13.002405] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.002424] ? kmem_cache_double_free+0x1e5/0x480 [ 13.002449] kmem_cache_double_free+0x1e5/0x480 [ 13.002472] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.002494] ? finish_task_switch.isra.0+0x153/0x700 [ 13.002516] ? __switch_to+0x47/0xf50 [ 13.002542] ? __pfx_read_tsc+0x10/0x10 [ 13.002562] ? ktime_get_ts64+0x86/0x230 [ 13.002585] kunit_try_run_case+0x1a5/0x480 [ 13.002608] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.002628] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.002650] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.002672] ? __kthread_parkme+0x82/0x180 [ 13.002718] ? preempt_count_sub+0x50/0x80 [ 13.002740] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.002762] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.002784] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.002806] kthread+0x337/0x6f0 [ 13.002824] ? trace_preempt_on+0x20/0xc0 [ 13.002847] ? __pfx_kthread+0x10/0x10 [ 13.002866] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.002886] ? calculate_sigpending+0x7b/0xa0 [ 13.002917] ? __pfx_kthread+0x10/0x10 [ 13.002937] ret_from_fork+0x116/0x1d0 [ 13.002955] ? __pfx_kthread+0x10/0x10 [ 13.002973] ret_from_fork_asm+0x1a/0x30 [ 13.003002] </TASK> [ 13.003012] [ 13.016943] Allocated by task 226: [ 13.017123] kasan_save_stack+0x45/0x70 [ 13.017313] kasan_save_track+0x18/0x40 [ 13.017485] kasan_save_alloc_info+0x3b/0x50 [ 13.018193] __kasan_slab_alloc+0x91/0xa0 [ 13.018697] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.019002] kmem_cache_double_free+0x14f/0x480 [ 13.019346] kunit_try_run_case+0x1a5/0x480 [ 13.019566] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.020172] kthread+0x337/0x6f0 [ 13.020345] ret_from_fork+0x116/0x1d0 [ 13.020520] ret_from_fork_asm+0x1a/0x30 [ 13.021014] [ 13.021177] Freed by task 226: [ 13.021469] kasan_save_stack+0x45/0x70 [ 13.021960] kasan_save_track+0x18/0x40 [ 13.022154] kasan_save_free_info+0x3f/0x60 [ 13.022332] __kasan_slab_free+0x56/0x70 [ 13.022817] kmem_cache_free+0x249/0x420 [ 13.023012] kmem_cache_double_free+0x16a/0x480 [ 13.023209] kunit_try_run_case+0x1a5/0x480 [ 13.023956] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.024291] kthread+0x337/0x6f0 [ 13.024644] ret_from_fork+0x116/0x1d0 [ 13.025044] ret_from_fork_asm+0x1a/0x30 [ 13.025620] [ 13.025729] The buggy address belongs to the object at ffff888102740000 [ 13.025729] which belongs to the cache test_cache of size 200 [ 13.026243] The buggy address is located 0 bytes inside of [ 13.026243] 200-byte region [ffff888102740000, ffff8881027400c8) [ 13.027611] [ 13.027754] The buggy address belongs to the physical page: [ 13.028262] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102740 [ 13.029205] flags: 0x200000000000000(node=0|zone=2) [ 13.029842] page_type: f5(slab) [ 13.030038] raw: 0200000000000000 ffff88810100d500 dead000000000122 0000000000000000 [ 13.030602] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.030990] page dumped because: kasan: bad access detected [ 13.031223] [ 13.031307] Memory state around the buggy address: [ 13.031939] ffff88810273ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.032251] ffff88810273ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.033051] >ffff888102740000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.033568] ^ [ 13.034057] ffff888102740080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.034412] ffff888102740100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.034734] ==================================================================