Date
June 23, 2025, 7:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.033515] ================================================================== [ 34.033670] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 34.033826] Free of addr fff00000c646a000 by task kunit_try_catch/221 [ 34.033930] [ 34.034112] CPU: 1 UID: 0 PID: 221 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT [ 34.034431] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.034807] Hardware name: linux,dummy-virt (DT) [ 34.034897] Call trace: [ 34.035298] show_stack+0x20/0x38 (C) [ 34.035663] dump_stack_lvl+0x8c/0xd0 [ 34.035808] print_report+0x118/0x608 [ 34.035979] kasan_report_invalid_free+0xc0/0xe8 [ 34.036134] check_slab_allocation+0xd4/0x108 [ 34.036318] __kasan_slab_pre_free+0x2c/0x48 [ 34.036455] kmem_cache_free+0xf0/0x468 [ 34.036602] kmem_cache_double_free+0x190/0x3c8 [ 34.037137] kunit_try_run_case+0x170/0x3f0 [ 34.037292] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.037721] kthread+0x328/0x630 [ 34.037890] ret_from_fork+0x10/0x20 [ 34.038017] [ 34.038089] Allocated by task 221: [ 34.038184] kasan_save_stack+0x3c/0x68 [ 34.038346] kasan_save_track+0x20/0x40 [ 34.038489] kasan_save_alloc_info+0x40/0x58 [ 34.038854] __kasan_slab_alloc+0xa8/0xb0 [ 34.039195] kmem_cache_alloc_noprof+0x10c/0x398 [ 34.039461] kmem_cache_double_free+0x12c/0x3c8 [ 34.039570] kunit_try_run_case+0x170/0x3f0 [ 34.039682] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.039802] kthread+0x328/0x630 [ 34.040253] ret_from_fork+0x10/0x20 [ 34.040516] [ 34.040630] Freed by task 221: [ 34.040812] kasan_save_stack+0x3c/0x68 [ 34.040925] kasan_save_track+0x20/0x40 [ 34.041052] kasan_save_free_info+0x4c/0x78 [ 34.041206] __kasan_slab_free+0x6c/0x98 [ 34.041604] kmem_cache_free+0x260/0x468 [ 34.041719] kmem_cache_double_free+0x140/0x3c8 [ 34.041915] kunit_try_run_case+0x170/0x3f0 [ 34.042287] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.042632] kthread+0x328/0x630 [ 34.042811] ret_from_fork+0x10/0x20 [ 34.043041] [ 34.043207] The buggy address belongs to the object at fff00000c646a000 [ 34.043207] which belongs to the cache test_cache of size 200 [ 34.043384] The buggy address is located 0 bytes inside of [ 34.043384] 200-byte region [fff00000c646a000, fff00000c646a0c8) [ 34.043530] [ 34.043589] The buggy address belongs to the physical page: [ 34.043669] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10646a [ 34.043825] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.044020] page_type: f5(slab) [ 34.044269] raw: 0bfffe0000000000 fff00000c5641780 dead000000000122 0000000000000000 [ 34.044769] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 34.044900] page dumped because: kasan: bad access detected [ 34.044994] [ 34.045157] Memory state around the buggy address: [ 34.045268] fff00000c6469f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.045370] fff00000c6469f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 34.045481] >fff00000c646a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.045646] ^ [ 34.045746] fff00000c646a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 34.045979] fff00000c646a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.046093] ==================================================================
[ 22.529504] ================================================================== [ 22.529890] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 22.530307] Free of addr ffff8881023c4000 by task kunit_try_catch/238 [ 22.530648] [ 22.530820] CPU: 0 UID: 0 PID: 238 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250623 #1 PREEMPT(voluntary) [ 22.530904] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.530928] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.530964] Call Trace: [ 22.530989] <TASK> [ 22.531017] dump_stack_lvl+0x73/0xb0 [ 22.531068] print_report+0xd1/0x650 [ 22.531100] ? __virt_addr_valid+0x1db/0x2d0 [ 22.531138] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.531174] ? kmem_cache_double_free+0x1e5/0x480 [ 22.531212] kasan_report_invalid_free+0x10a/0x130 [ 22.531251] ? kmem_cache_double_free+0x1e5/0x480 [ 22.531293] ? kmem_cache_double_free+0x1e5/0x480 [ 22.531330] check_slab_allocation+0x101/0x130 [ 22.531362] __kasan_slab_pre_free+0x28/0x40 [ 22.531444] kmem_cache_free+0xed/0x420 [ 22.531479] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 22.531521] ? kmem_cache_double_free+0x1e5/0x480 [ 22.531557] kmem_cache_double_free+0x1e5/0x480 [ 22.531590] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 22.531627] ? finish_task_switch.isra.0+0x153/0x700 [ 22.531664] ? __switch_to+0x47/0xf50 [ 22.531716] ? __pfx_read_tsc+0x10/0x10 [ 22.531756] ? ktime_get_ts64+0x86/0x230 [ 22.531792] kunit_try_run_case+0x1a5/0x480 [ 22.531825] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.531883] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.531915] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.531945] ? __kthread_parkme+0x82/0x180 [ 22.531973] ? preempt_count_sub+0x50/0x80 [ 22.532007] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.532043] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.532101] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.532135] kthread+0x337/0x6f0 [ 22.532166] ? trace_preempt_on+0x20/0xc0 [ 22.532200] ? __pfx_kthread+0x10/0x10 [ 22.532228] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.532254] ? calculate_sigpending+0x7b/0xa0 [ 22.532288] ? __pfx_kthread+0x10/0x10 [ 22.532320] ret_from_fork+0x116/0x1d0 [ 22.532349] ? __pfx_kthread+0x10/0x10 [ 22.532392] ret_from_fork_asm+0x1a/0x30 [ 22.532440] </TASK> [ 22.532458] [ 22.541643] Allocated by task 238: [ 22.541797] kasan_save_stack+0x45/0x70 [ 22.541954] kasan_save_track+0x18/0x40 [ 22.542208] kasan_save_alloc_info+0x3b/0x50 [ 22.542513] __kasan_slab_alloc+0x91/0xa0 [ 22.542797] kmem_cache_alloc_noprof+0x123/0x3f0 [ 22.543106] kmem_cache_double_free+0x14f/0x480 [ 22.543616] kunit_try_run_case+0x1a5/0x480 [ 22.543942] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.544425] kthread+0x337/0x6f0 [ 22.544684] ret_from_fork+0x116/0x1d0 [ 22.544885] ret_from_fork_asm+0x1a/0x30 [ 22.545060] [ 22.545279] Freed by task 238: [ 22.545471] kasan_save_stack+0x45/0x70 [ 22.545773] kasan_save_track+0x18/0x40 [ 22.546218] kasan_save_free_info+0x3f/0x60 [ 22.546574] __kasan_slab_free+0x56/0x70 [ 22.546882] kmem_cache_free+0x249/0x420 [ 22.547315] kmem_cache_double_free+0x16a/0x480 [ 22.547685] kunit_try_run_case+0x1a5/0x480 [ 22.547962] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.548496] kthread+0x337/0x6f0 [ 22.548740] ret_from_fork+0x116/0x1d0 [ 22.548984] ret_from_fork_asm+0x1a/0x30 [ 22.549315] [ 22.549438] The buggy address belongs to the object at ffff8881023c4000 [ 22.549438] which belongs to the cache test_cache of size 200 [ 22.550240] The buggy address is located 0 bytes inside of [ 22.550240] 200-byte region [ffff8881023c4000, ffff8881023c40c8) [ 22.551020] [ 22.551322] The buggy address belongs to the physical page: [ 22.551702] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1023c4 [ 22.552312] flags: 0x200000000000000(node=0|zone=2) [ 22.552598] page_type: f5(slab) [ 22.552748] raw: 0200000000000000 ffff8881009aedc0 dead000000000122 0000000000000000 [ 22.553005] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 22.553509] page dumped because: kasan: bad access detected [ 22.553860] [ 22.554032] Memory state around the buggy address: [ 22.554498] ffff8881023c3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.555025] ffff8881023c3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.555705] >ffff8881023c4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 22.556308] ^ [ 22.556515] ffff8881023c4080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 22.556727] ffff8881023c4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.556973] ==================================================================