Date
May 26, 2025, 9:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.394097] ================================================================== [ 18.394210] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.394298] Free of addr fff00000c794a000 by task kunit_try_catch/209 [ 18.394498] [ 18.394573] CPU: 0 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT [ 18.394802] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.394858] Hardware name: linux,dummy-virt (DT) [ 18.394942] Call trace: [ 18.394994] show_stack+0x20/0x38 (C) [ 18.395115] dump_stack_lvl+0x8c/0xd0 [ 18.395232] print_report+0x118/0x608 [ 18.395346] kasan_report_invalid_free+0xc0/0xe8 [ 18.395462] check_slab_allocation+0xd4/0x108 [ 18.395574] __kasan_slab_pre_free+0x2c/0x48 [ 18.395662] kmem_cache_free+0xf0/0x470 [ 18.395756] kmem_cache_double_free+0x190/0x3c8 [ 18.395888] kunit_try_run_case+0x170/0x3f0 [ 18.396055] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.396185] kthread+0x328/0x630 [ 18.396282] ret_from_fork+0x10/0x20 [ 18.396409] [ 18.396449] Allocated by task 209: [ 18.396530] kasan_save_stack+0x3c/0x68 [ 18.396635] kasan_save_track+0x20/0x40 [ 18.396725] kasan_save_alloc_info+0x40/0x58 [ 18.396813] __kasan_slab_alloc+0xa8/0xb0 [ 18.396904] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 18.397000] kmem_cache_double_free+0x12c/0x3c8 [ 18.397124] kunit_try_run_case+0x170/0x3f0 [ 18.397244] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.397360] kthread+0x328/0x630 [ 18.397423] ret_from_fork+0x10/0x20 [ 18.397498] [ 18.397534] Freed by task 209: [ 18.397624] kasan_save_stack+0x3c/0x68 [ 18.397754] kasan_save_track+0x20/0x40 [ 18.397824] kasan_save_free_info+0x4c/0x78 [ 18.397903] __kasan_slab_free+0x6c/0x98 [ 18.397973] kmem_cache_free+0x260/0x470 [ 18.398054] kmem_cache_double_free+0x140/0x3c8 [ 18.398130] kunit_try_run_case+0x170/0x3f0 [ 18.398218] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.398313] kthread+0x328/0x630 [ 18.398431] ret_from_fork+0x10/0x20 [ 18.398503] [ 18.398547] The buggy address belongs to the object at fff00000c794a000 [ 18.398547] which belongs to the cache test_cache of size 200 [ 18.398682] The buggy address is located 0 bytes inside of [ 18.398682] 200-byte region [fff00000c794a000, fff00000c794a0c8) [ 18.398830] [ 18.398874] The buggy address belongs to the physical page: [ 18.398939] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10794a [ 18.399053] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.399198] page_type: f5(slab) [ 18.399353] raw: 0bfffe0000000000 fff00000c3e3cdc0 dead000000000122 0000000000000000 [ 18.399525] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.399627] page dumped because: kasan: bad access detected [ 18.399700] [ 18.399740] Memory state around the buggy address: [ 18.399815] fff00000c7949f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.399921] fff00000c7949f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.400023] >fff00000c794a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.400097] ^ [ 18.400314] fff00000c794a080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.400512] fff00000c794a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.400604] ==================================================================
[ 11.673471] ================================================================== [ 11.674513] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 11.674794] Free of addr ffff888103979000 by task kunit_try_catch/227 [ 11.675537] [ 11.675800] CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) [ 11.675848] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.675860] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.675881] Call Trace: [ 11.675893] <TASK> [ 11.675909] dump_stack_lvl+0x73/0xb0 [ 11.675937] print_report+0xd1/0x650 [ 11.675961] ? __virt_addr_valid+0x1db/0x2d0 [ 11.675985] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.676098] ? kmem_cache_double_free+0x1e5/0x480 [ 11.676125] kasan_report_invalid_free+0x10a/0x130 [ 11.676150] ? kmem_cache_double_free+0x1e5/0x480 [ 11.676172] ? kmem_cache_double_free+0x1e5/0x480 [ 11.676192] check_slab_allocation+0x101/0x130 [ 11.676214] __kasan_slab_pre_free+0x28/0x40 [ 11.676234] kmem_cache_free+0xed/0x420 [ 11.676254] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.676275] ? kmem_cache_double_free+0x1e5/0x480 [ 11.676298] kmem_cache_double_free+0x1e5/0x480 [ 11.676318] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 11.676338] ? finish_task_switch.isra.0+0x153/0x700 [ 11.676359] ? __switch_to+0x47/0xf50 [ 11.676400] ? __pfx_read_tsc+0x10/0x10 [ 11.676420] ? ktime_get_ts64+0x86/0x230 [ 11.676445] kunit_try_run_case+0x1a5/0x480 [ 11.676466] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.676485] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.676509] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.676534] ? __kthread_parkme+0x82/0x180 [ 11.676553] ? preempt_count_sub+0x50/0x80 [ 11.676575] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.676595] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.676619] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.676642] kthread+0x337/0x6f0 [ 11.676661] ? trace_preempt_on+0x20/0xc0 [ 11.676684] ? __pfx_kthread+0x10/0x10 [ 11.676704] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.676735] ? calculate_sigpending+0x7b/0xa0 [ 11.676759] ? __pfx_kthread+0x10/0x10 [ 11.676779] ret_from_fork+0x116/0x1d0 [ 11.676797] ? __pfx_kthread+0x10/0x10 [ 11.676817] ret_from_fork_asm+0x1a/0x30 [ 11.676847] </TASK> [ 11.676858] [ 11.688912] Allocated by task 227: [ 11.689138] kasan_save_stack+0x45/0x70 [ 11.689351] kasan_save_track+0x18/0x40 [ 11.689561] kasan_save_alloc_info+0x3b/0x50 [ 11.689784] __kasan_slab_alloc+0x91/0xa0 [ 11.690263] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.690527] kmem_cache_double_free+0x14f/0x480 [ 11.690763] kunit_try_run_case+0x1a5/0x480 [ 11.690960] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.691373] kthread+0x337/0x6f0 [ 11.691821] ret_from_fork+0x116/0x1d0 [ 11.691966] ret_from_fork_asm+0x1a/0x30 [ 11.692107] [ 11.692177] Freed by task 227: [ 11.692334] kasan_save_stack+0x45/0x70 [ 11.692646] kasan_save_track+0x18/0x40 [ 11.693149] kasan_save_free_info+0x3f/0x60 [ 11.693362] __kasan_slab_free+0x56/0x70 [ 11.693568] kmem_cache_free+0x249/0x420 [ 11.694423] kmem_cache_double_free+0x16a/0x480 [ 11.694736] kunit_try_run_case+0x1a5/0x480 [ 11.694891] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.695073] kthread+0x337/0x6f0 [ 11.695198] ret_from_fork+0x116/0x1d0 [ 11.695333] ret_from_fork_asm+0x1a/0x30 [ 11.695662] [ 11.695862] The buggy address belongs to the object at ffff888103979000 [ 11.695862] which belongs to the cache test_cache of size 200 [ 11.696958] The buggy address is located 0 bytes inside of [ 11.696958] 200-byte region [ffff888103979000, ffff8881039790c8) [ 11.698172] [ 11.698320] The buggy address belongs to the physical page: [ 11.698959] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103979 [ 11.699477] flags: 0x200000000000000(node=0|zone=2) [ 11.699649] page_type: f5(slab) [ 11.699862] raw: 0200000000000000 ffff88810189c8c0 dead000000000122 0000000000000000 [ 11.700627] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 11.701406] page dumped because: kasan: bad access detected [ 11.701991] [ 11.702071] Memory state around the buggy address: [ 11.702411] ffff888103978f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.703217] ffff888103978f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.703670] >ffff888103979000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.704401] ^ [ 11.704695] ffff888103979080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 11.705284] ffff888103979100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.705708] ==================================================================