Date
July 9, 2025, 11:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.454171] ================================================================== [ 17.454281] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 17.454384] Free of addr fff00000c6cdc000 by task kunit_try_catch/209 [ 17.454496] [ 17.454540] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 17.454800] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.454830] Hardware name: linux,dummy-virt (DT) [ 17.454918] Call trace: [ 17.455053] show_stack+0x20/0x38 (C) [ 17.455152] dump_stack_lvl+0x8c/0xd0 [ 17.455303] print_report+0x118/0x608 [ 17.455411] kasan_report_invalid_free+0xc0/0xe8 [ 17.455493] check_slab_allocation+0xd4/0x108 [ 17.455543] __kasan_slab_pre_free+0x2c/0x48 [ 17.455680] kmem_cache_free+0xf0/0x468 [ 17.455965] kmem_cache_double_free+0x190/0x3c8 [ 17.456209] kunit_try_run_case+0x170/0x3f0 [ 17.456346] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.456496] kthread+0x328/0x630 [ 17.456561] ret_from_fork+0x10/0x20 [ 17.456620] [ 17.456640] Allocated by task 209: [ 17.456671] kasan_save_stack+0x3c/0x68 [ 17.457072] kasan_save_track+0x20/0x40 [ 17.457135] kasan_save_alloc_info+0x40/0x58 [ 17.457184] __kasan_slab_alloc+0xa8/0xb0 [ 17.457232] kmem_cache_alloc_noprof+0x10c/0x398 [ 17.457280] kmem_cache_double_free+0x12c/0x3c8 [ 17.457320] kunit_try_run_case+0x170/0x3f0 [ 17.457357] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.457410] kthread+0x328/0x630 [ 17.457442] ret_from_fork+0x10/0x20 [ 17.457479] [ 17.457497] Freed by task 209: [ 17.457531] kasan_save_stack+0x3c/0x68 [ 17.457579] kasan_save_track+0x20/0x40 [ 17.457617] kasan_save_free_info+0x4c/0x78 [ 17.457654] __kasan_slab_free+0x6c/0x98 [ 17.457702] kmem_cache_free+0x260/0x468 [ 17.457738] kmem_cache_double_free+0x140/0x3c8 [ 17.457787] kunit_try_run_case+0x170/0x3f0 [ 17.457823] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.457876] kthread+0x328/0x630 [ 17.457907] ret_from_fork+0x10/0x20 [ 17.457945] [ 17.457965] The buggy address belongs to the object at fff00000c6cdc000 [ 17.457965] which belongs to the cache test_cache of size 200 [ 17.458028] The buggy address is located 0 bytes inside of [ 17.458028] 200-byte region [fff00000c6cdc000, fff00000c6cdc0c8) [ 17.458088] [ 17.458111] The buggy address belongs to the physical page: [ 17.458157] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106cdc [ 17.458223] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.458293] page_type: f5(slab) [ 17.458334] raw: 0bfffe0000000000 fff00000c56b2a00 dead000000000122 0000000000000000 [ 17.458385] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 17.458426] page dumped because: kasan: bad access detected [ 17.458459] [ 17.458490] Memory state around the buggy address: [ 17.458529] fff00000c6cdbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.458575] fff00000c6cdbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.458619] >fff00000c6cdc000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 17.458656] ^ [ 17.458684] fff00000c6cdc080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 17.458740] fff00000c6cdc100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.458795] ==================================================================
[ 13.236008] ================================================================== [ 13.236994] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.237614] Free of addr ffff8881031f7000 by task kunit_try_catch/226 [ 13.238164] [ 13.238347] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.238391] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.238403] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.238425] Call Trace: [ 13.238437] <TASK> [ 13.238453] dump_stack_lvl+0x73/0xb0 [ 13.238486] print_report+0xd1/0x650 [ 13.238508] ? __virt_addr_valid+0x1db/0x2d0 [ 13.238533] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.238556] ? kmem_cache_double_free+0x1e5/0x480 [ 13.238582] kasan_report_invalid_free+0x10a/0x130 [ 13.238606] ? kmem_cache_double_free+0x1e5/0x480 [ 13.238632] ? kmem_cache_double_free+0x1e5/0x480 [ 13.238656] check_slab_allocation+0x101/0x130 [ 13.238677] __kasan_slab_pre_free+0x28/0x40 [ 13.238698] kmem_cache_free+0xed/0x420 [ 13.238730] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.238751] ? kmem_cache_double_free+0x1e5/0x480 [ 13.238777] kmem_cache_double_free+0x1e5/0x480 [ 13.238801] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.238825] ? finish_task_switch.isra.0+0x153/0x700 [ 13.238849] ? __switch_to+0x47/0xf50 [ 13.238878] ? __pfx_read_tsc+0x10/0x10 [ 13.238899] ? ktime_get_ts64+0x86/0x230 [ 13.238924] kunit_try_run_case+0x1a5/0x480 [ 13.238949] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.238971] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.238996] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.239019] ? __kthread_parkme+0x82/0x180 [ 13.239053] ? preempt_count_sub+0x50/0x80 [ 13.239076] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.239100] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.239124] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.239148] kthread+0x337/0x6f0 [ 13.239167] ? trace_preempt_on+0x20/0xc0 [ 13.239191] ? __pfx_kthread+0x10/0x10 [ 13.239211] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.239232] ? calculate_sigpending+0x7b/0xa0 [ 13.239255] ? __pfx_kthread+0x10/0x10 [ 13.239276] ret_from_fork+0x116/0x1d0 [ 13.239294] ? __pfx_kthread+0x10/0x10 [ 13.239314] ret_from_fork_asm+0x1a/0x30 [ 13.239344] </TASK> [ 13.239354] [ 13.250860] Allocated by task 226: [ 13.251010] kasan_save_stack+0x45/0x70 [ 13.251223] kasan_save_track+0x18/0x40 [ 13.251394] kasan_save_alloc_info+0x3b/0x50 [ 13.251604] __kasan_slab_alloc+0x91/0xa0 [ 13.251792] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.252014] kmem_cache_double_free+0x14f/0x480 [ 13.252658] kunit_try_run_case+0x1a5/0x480 [ 13.252861] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.253252] kthread+0x337/0x6f0 [ 13.253423] ret_from_fork+0x116/0x1d0 [ 13.253728] ret_from_fork_asm+0x1a/0x30 [ 13.253997] [ 13.254170] Freed by task 226: [ 13.254292] kasan_save_stack+0x45/0x70 [ 13.254605] kasan_save_track+0x18/0x40 [ 13.254815] kasan_save_free_info+0x3f/0x60 [ 13.255006] __kasan_slab_free+0x56/0x70 [ 13.255211] kmem_cache_free+0x249/0x420 [ 13.255635] kmem_cache_double_free+0x16a/0x480 [ 13.255854] kunit_try_run_case+0x1a5/0x480 [ 13.256188] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.256517] kthread+0x337/0x6f0 [ 13.256651] ret_from_fork+0x116/0x1d0 [ 13.256852] ret_from_fork_asm+0x1a/0x30 [ 13.257024] [ 13.257129] The buggy address belongs to the object at ffff8881031f7000 [ 13.257129] which belongs to the cache test_cache of size 200 [ 13.257883] The buggy address is located 0 bytes inside of [ 13.257883] 200-byte region [ffff8881031f7000, ffff8881031f70c8) [ 13.258518] [ 13.258695] The buggy address belongs to the physical page: [ 13.258942] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1031f7 [ 13.259390] flags: 0x200000000000000(node=0|zone=2) [ 13.259611] page_type: f5(slab) [ 13.259852] raw: 0200000000000000 ffff8881031f2140 dead000000000122 0000000000000000 [ 13.260124] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.260541] page dumped because: kasan: bad access detected [ 13.260762] [ 13.260858] Memory state around the buggy address: [ 13.261074] ffff8881031f6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.261323] ffff8881031f6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.261623] >ffff8881031f7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.261912] ^ [ 13.262028] ffff8881031f7080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.262365] ffff8881031f7100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.262635] ==================================================================