Date
July 3, 2025, 3:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.308522] ================================================================== [ 16.308586] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.308708] Free of addr fff00000c78a9000 by task kunit_try_catch/212 [ 16.308799] [ 16.308847] CPU: 1 UID: 0 PID: 212 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT [ 16.308931] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.308973] Hardware name: linux,dummy-virt (DT) [ 16.309093] Call trace: [ 16.309255] show_stack+0x20/0x38 (C) [ 16.309328] dump_stack_lvl+0x8c/0xd0 [ 16.309381] print_report+0x118/0x608 [ 16.309436] kasan_report_invalid_free+0xc0/0xe8 [ 16.309580] check_slab_allocation+0xd4/0x108 [ 16.309647] __kasan_slab_pre_free+0x2c/0x48 [ 16.309691] kmem_cache_free+0xf0/0x468 [ 16.309736] kmem_cache_double_free+0x190/0x3c8 [ 16.309829] kunit_try_run_case+0x170/0x3f0 [ 16.309882] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.309936] kthread+0x328/0x630 [ 16.310007] ret_from_fork+0x10/0x20 [ 16.310056] [ 16.310073] Allocated by task 212: [ 16.310130] kasan_save_stack+0x3c/0x68 [ 16.310482] kasan_save_track+0x20/0x40 [ 16.310625] kasan_save_alloc_info+0x40/0x58 [ 16.310712] __kasan_slab_alloc+0xa8/0xb0 [ 16.310819] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.310882] kmem_cache_double_free+0x12c/0x3c8 [ 16.310922] kunit_try_run_case+0x170/0x3f0 [ 16.310969] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.311032] kthread+0x328/0x630 [ 16.311066] ret_from_fork+0x10/0x20 [ 16.311103] [ 16.311121] Freed by task 212: [ 16.311146] kasan_save_stack+0x3c/0x68 [ 16.311182] kasan_save_track+0x20/0x40 [ 16.311217] kasan_save_free_info+0x4c/0x78 [ 16.311254] __kasan_slab_free+0x6c/0x98 [ 16.311288] kmem_cache_free+0x260/0x468 [ 16.311321] kmem_cache_double_free+0x140/0x3c8 [ 16.311362] kunit_try_run_case+0x170/0x3f0 [ 16.311400] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.311527] kthread+0x328/0x630 [ 16.311657] ret_from_fork+0x10/0x20 [ 16.311817] [ 16.312046] The buggy address belongs to the object at fff00000c78a9000 [ 16.312046] which belongs to the cache test_cache of size 200 [ 16.312106] The buggy address is located 0 bytes inside of [ 16.312106] 200-byte region [fff00000c78a9000, fff00000c78a90c8) [ 16.312230] [ 16.312405] The buggy address belongs to the physical page: [ 16.312502] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078a9 [ 16.312557] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.312764] page_type: f5(slab) [ 16.313044] raw: 0bfffe0000000000 fff00000c78a7000 dead000000000122 0000000000000000 [ 16.313265] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.313332] page dumped because: kasan: bad access detected [ 16.313364] [ 16.313380] Memory state around the buggy address: [ 16.313413] fff00000c78a8f00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 16.313712] fff00000c78a8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.313936] >fff00000c78a9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.314082] ^ [ 16.314262] fff00000c78a9080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.314304] fff00000c78a9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.314542] ==================================================================
[ 11.843221] ================================================================== [ 11.844019] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 11.844260] Free of addr ffff88810314a000 by task kunit_try_catch/228 [ 11.845070] [ 11.845538] CPU: 0 UID: 0 PID: 228 Comm: kunit_try_catch Tainted: G B N 6.15.5-rc1 #1 PREEMPT(voluntary) [ 11.845592] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.845604] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.845627] Call Trace: [ 11.845640] <TASK> [ 11.845771] dump_stack_lvl+0x73/0xb0 [ 11.845809] print_report+0xd1/0x650 [ 11.845832] ? __virt_addr_valid+0x1db/0x2d0 [ 11.845854] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.845877] ? kmem_cache_double_free+0x1e5/0x480 [ 11.845899] kasan_report_invalid_free+0x10a/0x130 [ 11.845932] ? kmem_cache_double_free+0x1e5/0x480 [ 11.845954] ? kmem_cache_double_free+0x1e5/0x480 [ 11.845975] check_slab_allocation+0x101/0x130 [ 11.845998] __kasan_slab_pre_free+0x28/0x40 [ 11.846019] kmem_cache_free+0xed/0x420 [ 11.846039] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.846060] ? kmem_cache_double_free+0x1e5/0x480 [ 11.846083] kmem_cache_double_free+0x1e5/0x480 [ 11.846104] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 11.846124] ? finish_task_switch.isra.0+0x153/0x700 [ 11.846147] ? __switch_to+0x5d9/0xf60 [ 11.846167] ? dequeue_task_fair+0x166/0x4e0 [ 11.846192] ? trace_hardirqs_on+0x37/0xe0 [ 11.846213] ? __pfx_read_tsc+0x10/0x10 [ 11.846241] ? ktime_get_ts64+0x86/0x230 [ 11.846265] kunit_try_run_case+0x1a5/0x480 [ 11.846289] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.846316] ? __x86_indirect_its_thunk_r15+0x80/0x80 [ 11.846341] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.846364] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.846386] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.846470] kthread+0x337/0x6f0 [ 11.846490] ? trace_preempt_on+0x20/0xc0 [ 11.846512] ? __pfx_kthread+0x10/0x10 [ 11.846529] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.846563] ? calculate_sigpending+0x7b/0xa0 [ 11.846586] ? __pfx_kthread+0x10/0x10 [ 11.846604] ret_from_fork+0x41/0x80 [ 11.846624] ? __pfx_kthread+0x10/0x10 [ 11.846642] ret_from_fork_asm+0x1a/0x30 [ 11.846671] </TASK> [ 11.846682] [ 11.862220] Allocated by task 228: [ 11.862764] kasan_save_stack+0x45/0x70 [ 11.863181] kasan_save_track+0x18/0x40 [ 11.863516] kasan_save_alloc_info+0x3b/0x50 [ 11.863996] __kasan_slab_alloc+0x91/0xa0 [ 11.864362] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.864573] kmem_cache_double_free+0x14f/0x480 [ 11.864878] kunit_try_run_case+0x1a5/0x480 [ 11.865300] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.865940] kthread+0x337/0x6f0 [ 11.866175] ret_from_fork+0x41/0x80 [ 11.866563] ret_from_fork_asm+0x1a/0x30 [ 11.866944] [ 11.867023] Freed by task 228: [ 11.867136] kasan_save_stack+0x45/0x70 [ 11.867288] kasan_save_track+0x18/0x40 [ 11.867423] kasan_save_free_info+0x3f/0x60 [ 11.867565] __kasan_slab_free+0x56/0x70 [ 11.867701] kmem_cache_free+0x249/0x420 [ 11.867836] kmem_cache_double_free+0x16a/0x480 [ 11.867986] kunit_try_run_case+0x1a5/0x480 [ 11.868130] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.868458] kthread+0x337/0x6f0 [ 11.868776] ret_from_fork+0x41/0x80 [ 11.869107] ret_from_fork_asm+0x1a/0x30 [ 11.869647] [ 11.869865] The buggy address belongs to the object at ffff88810314a000 [ 11.869865] which belongs to the cache test_cache of size 200 [ 11.871326] The buggy address is located 0 bytes inside of [ 11.871326] 200-byte region [ffff88810314a000, ffff88810314a0c8) [ 11.872588] [ 11.872816] The buggy address belongs to the physical page: [ 11.873363] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10314a [ 11.874316] flags: 0x200000000000000(node=0|zone=2) [ 11.875021] page_type: f5(slab) [ 11.875407] raw: 0200000000000000 ffff88810111e140 dead000000000122 0000000000000000 [ 11.875905] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 11.876135] page dumped because: kasan: bad access detected [ 11.876317] [ 11.876388] Memory state around the buggy address: [ 11.876545] ffff888103149f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.876822] ffff888103149f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.877108] >ffff88810314a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.877783] ^ [ 11.877921] ffff88810314a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 11.878214] ffff88810314a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.878671] ==================================================================