Date
July 17, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.309171] ================================================================== [ 17.309265] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.309347] Free of addr fff00000c65ab000 by task kunit_try_catch/209 [ 17.309392] [ 17.309435] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 17.309535] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.309562] Hardware name: linux,dummy-virt (DT) [ 17.309664] Call trace: [ 17.309689] show_stack+0x20/0x38 (C) [ 17.309743] dump_stack_lvl+0x8c/0xd0 [ 17.309794] print_report+0x118/0x5d0 [ 17.309943] kasan_report_invalid_free+0xc0/0xe8 [ 17.310020] check_slab_allocation+0xd4/0x108 [ 17.310085] __kasan_slab_pre_free+0x2c/0x48 [ 17.310170] kmem_cache_free+0xf0/0x468 [ 17.310218] kmem_cache_double_free+0x190/0x3c8 [ 17.310265] kunit_try_run_case+0x170/0x3f0 [ 17.310313] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.310476] kthread+0x328/0x630 [ 17.310542] ret_from_fork+0x10/0x20 [ 17.310620] [ 17.310641] Allocated by task 209: [ 17.310707] kasan_save_stack+0x3c/0x68 [ 17.310800] kasan_save_track+0x20/0x40 [ 17.310838] kasan_save_alloc_info+0x40/0x58 [ 17.310906] __kasan_slab_alloc+0xa8/0xb0 [ 17.310942] kmem_cache_alloc_noprof+0x10c/0x398 [ 17.310982] kmem_cache_double_free+0x12c/0x3c8 [ 17.311018] kunit_try_run_case+0x170/0x3f0 [ 17.311056] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.311231] kthread+0x328/0x630 [ 17.311298] ret_from_fork+0x10/0x20 [ 17.311353] [ 17.311374] Freed by task 209: [ 17.311401] kasan_save_stack+0x3c/0x68 [ 17.311440] kasan_save_track+0x20/0x40 [ 17.311602] kasan_save_free_info+0x4c/0x78 [ 17.311687] __kasan_slab_free+0x6c/0x98 [ 17.311796] kmem_cache_free+0x260/0x468 [ 17.311882] kmem_cache_double_free+0x140/0x3c8 [ 17.312013] kunit_try_run_case+0x170/0x3f0 [ 17.312103] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.312146] kthread+0x328/0x630 [ 17.312179] ret_from_fork+0x10/0x20 [ 17.312214] [ 17.312311] The buggy address belongs to the object at fff00000c65ab000 [ 17.312311] which belongs to the cache test_cache of size 200 [ 17.312371] The buggy address is located 0 bytes inside of [ 17.312371] 200-byte region [fff00000c65ab000, fff00000c65ab0c8) [ 17.312430] [ 17.312478] The buggy address belongs to the physical page: [ 17.312857] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065ab [ 17.313041] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.313184] page_type: f5(slab) [ 17.313225] raw: 0bfffe0000000000 fff00000c3e56640 dead000000000122 0000000000000000 [ 17.313276] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.313492] page dumped because: kasan: bad access detected [ 17.313612] [ 17.313711] Memory state around the buggy address: [ 17.313813] fff00000c65aaf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.313857] fff00000c65aaf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.313928] >fff00000c65ab000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.313966] ^ [ 17.313994] fff00000c65ab080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.314036] fff00000c65ab100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.314149] ==================================================================
[ 12.988691] ================================================================== [ 12.989441] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.990621] Free of addr ffff888102f4b000 by task kunit_try_catch/226 [ 12.991262] [ 12.991463] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.991513] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.991524] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.991547] Call Trace: [ 12.991560] <TASK> [ 12.991587] dump_stack_lvl+0x73/0xb0 [ 12.991622] print_report+0xd1/0x610 [ 12.991646] ? __virt_addr_valid+0x1db/0x2d0 [ 12.991672] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.991695] ? kmem_cache_double_free+0x1e5/0x480 [ 12.991721] kasan_report_invalid_free+0x10a/0x130 [ 12.991746] ? kmem_cache_double_free+0x1e5/0x480 [ 12.991772] ? kmem_cache_double_free+0x1e5/0x480 [ 12.991796] check_slab_allocation+0x101/0x130 [ 12.992032] __kasan_slab_pre_free+0x28/0x40 [ 12.992069] kmem_cache_free+0xed/0x420 [ 12.992090] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.992110] ? kmem_cache_double_free+0x1e5/0x480 [ 12.992138] kmem_cache_double_free+0x1e5/0x480 [ 12.992162] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.992185] ? finish_task_switch.isra.0+0x153/0x700 [ 12.992209] ? __switch_to+0x47/0xf50 [ 12.992239] ? __pfx_read_tsc+0x10/0x10 [ 12.992260] ? ktime_get_ts64+0x86/0x230 [ 12.992285] kunit_try_run_case+0x1a5/0x480 [ 12.992312] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.992333] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.992358] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.992381] ? __kthread_parkme+0x82/0x180 [ 12.992402] ? preempt_count_sub+0x50/0x80 [ 12.992425] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.992448] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.992471] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.992494] kthread+0x337/0x6f0 [ 12.992513] ? trace_preempt_on+0x20/0xc0 [ 12.992537] ? __pfx_kthread+0x10/0x10 [ 12.992556] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.992576] ? calculate_sigpending+0x7b/0xa0 [ 12.992601] ? __pfx_kthread+0x10/0x10 [ 12.992622] ret_from_fork+0x116/0x1d0 [ 12.992640] ? __pfx_kthread+0x10/0x10 [ 12.992659] ret_from_fork_asm+0x1a/0x30 [ 12.992692] </TASK> [ 12.992702] [ 13.002884] Allocated by task 226: [ 13.003164] kasan_save_stack+0x45/0x70 [ 13.003331] kasan_save_track+0x18/0x40 [ 13.003470] kasan_save_alloc_info+0x3b/0x50 [ 13.003717] __kasan_slab_alloc+0x91/0xa0 [ 13.004174] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.004409] kmem_cache_double_free+0x14f/0x480 [ 13.004698] kunit_try_run_case+0x1a5/0x480 [ 13.005039] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.005228] kthread+0x337/0x6f0 [ 13.005346] ret_from_fork+0x116/0x1d0 [ 13.005537] ret_from_fork_asm+0x1a/0x30 [ 13.005960] [ 13.006112] Freed by task 226: [ 13.006317] kasan_save_stack+0x45/0x70 [ 13.006465] kasan_save_track+0x18/0x40 [ 13.006666] kasan_save_free_info+0x3f/0x60 [ 13.006848] __kasan_slab_free+0x56/0x70 [ 13.007186] kmem_cache_free+0x249/0x420 [ 13.007396] kmem_cache_double_free+0x16a/0x480 [ 13.007584] kunit_try_run_case+0x1a5/0x480 [ 13.007810] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.008047] kthread+0x337/0x6f0 [ 13.008174] ret_from_fork+0x116/0x1d0 [ 13.008353] ret_from_fork_asm+0x1a/0x30 [ 13.008552] [ 13.008952] The buggy address belongs to the object at ffff888102f4b000 [ 13.008952] which belongs to the cache test_cache of size 200 [ 13.009567] The buggy address is located 0 bytes inside of [ 13.009567] 200-byte region [ffff888102f4b000, ffff888102f4b0c8) [ 13.009936] [ 13.010012] The buggy address belongs to the physical page: [ 13.010326] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102f4b [ 13.010804] flags: 0x200000000000000(node=0|zone=2) [ 13.011203] page_type: f5(slab) [ 13.011470] raw: 0200000000000000 ffff888101a303c0 dead000000000122 0000000000000000 [ 13.011777] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.012330] page dumped because: kasan: bad access detected [ 13.012552] [ 13.012656] Memory state around the buggy address: [ 13.012956] ffff888102f4af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.013363] ffff888102f4af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.013721] >ffff888102f4b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.014186] ^ [ 13.014360] ffff888102f4b080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.014690] ffff888102f4b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.015158] ==================================================================