Date
July 8, 2025, 4:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.518571] ================================================================== [ 18.518652] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 18.518791] Free of addr fff00000c6e57000 by task kunit_try_catch/211 [ 18.518871] [ 18.518913] CPU: 1 UID: 0 PID: 211 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 18.519284] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.519392] Hardware name: linux,dummy-virt (DT) [ 18.519429] Call trace: [ 18.519454] show_stack+0x20/0x38 (C) [ 18.519511] dump_stack_lvl+0x8c/0xd0 [ 18.519566] print_report+0x118/0x608 [ 18.519875] kasan_report_invalid_free+0xc0/0xe8 [ 18.519959] check_slab_allocation+0xd4/0x108 [ 18.520017] __kasan_slab_pre_free+0x2c/0x48 [ 18.520068] kmem_cache_free+0xf0/0x468 [ 18.520117] kmem_cache_double_free+0x190/0x3c8 [ 18.520167] kunit_try_run_case+0x170/0x3f0 [ 18.520249] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.520305] kthread+0x328/0x630 [ 18.520509] ret_from_fork+0x10/0x20 [ 18.520635] [ 18.520745] Allocated by task 211: [ 18.520780] kasan_save_stack+0x3c/0x68 [ 18.520821] kasan_save_track+0x20/0x40 [ 18.520859] kasan_save_alloc_info+0x40/0x58 [ 18.520897] __kasan_slab_alloc+0xa8/0xb0 [ 18.521270] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.521378] kmem_cache_double_free+0x12c/0x3c8 [ 18.521453] kunit_try_run_case+0x170/0x3f0 [ 18.521537] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.521622] kthread+0x328/0x630 [ 18.521677] ret_from_fork+0x10/0x20 [ 18.522042] [ 18.522121] Freed by task 211: [ 18.522190] kasan_save_stack+0x3c/0x68 [ 18.522308] kasan_save_track+0x20/0x40 [ 18.522397] kasan_save_free_info+0x4c/0x78 [ 18.522448] __kasan_slab_free+0x6c/0x98 [ 18.522486] kmem_cache_free+0x260/0x468 [ 18.522712] kmem_cache_double_free+0x140/0x3c8 [ 18.522834] kunit_try_run_case+0x170/0x3f0 [ 18.522905] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.522952] kthread+0x328/0x630 [ 18.522997] ret_from_fork+0x10/0x20 [ 18.523034] [ 18.523064] The buggy address belongs to the object at fff00000c6e57000 [ 18.523064] which belongs to the cache test_cache of size 200 [ 18.523187] The buggy address is located 0 bytes inside of [ 18.523187] 200-byte region [fff00000c6e57000, fff00000c6e570c8) [ 18.523252] [ 18.523275] The buggy address belongs to the physical page: [ 18.523308] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106e57 [ 18.523389] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.523746] page_type: f5(slab) [ 18.524014] raw: 0bfffe0000000000 fff00000c5b8bc80 dead000000000122 0000000000000000 [ 18.524126] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 18.524225] page dumped because: kasan: bad access detected [ 18.524295] [ 18.524315] Memory state around the buggy address: [ 18.524365] fff00000c6e56f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.524409] fff00000c6e56f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.525066] >fff00000c6e57000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.525131] ^ [ 18.525190] fff00000c6e57080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 18.525280] fff00000c6e57100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.525392] ==================================================================
[ 12.007498] ================================================================== [ 12.008888] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 12.009409] Free of addr ffff888103600000 by task kunit_try_catch/229 [ 12.009630] [ 12.009727] CPU: 0 UID: 0 PID: 229 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 12.009776] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.009788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.009811] Call Trace: [ 12.009824] <TASK> [ 12.009841] dump_stack_lvl+0x73/0xb0 [ 12.009869] print_report+0xd1/0x650 [ 12.009904] ? __virt_addr_valid+0x1db/0x2d0 [ 12.009928] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.009951] ? kmem_cache_double_free+0x1e5/0x480 [ 12.009973] kasan_report_invalid_free+0x10a/0x130 [ 12.009998] ? kmem_cache_double_free+0x1e5/0x480 [ 12.010021] ? kmem_cache_double_free+0x1e5/0x480 [ 12.010042] check_slab_allocation+0x101/0x130 [ 12.010065] __kasan_slab_pre_free+0x28/0x40 [ 12.010086] kmem_cache_free+0xed/0x420 [ 12.010107] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.010129] ? kmem_cache_double_free+0x1e5/0x480 [ 12.010152] kmem_cache_double_free+0x1e5/0x480 [ 12.010174] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 12.010194] ? finish_task_switch.isra.0+0x153/0x700 [ 12.010219] ? __switch_to+0x5d9/0xf60 [ 12.010271] ? dequeue_task_fair+0x166/0x4e0 [ 12.010300] ? __pfx_read_tsc+0x10/0x10 [ 12.010321] ? ktime_get_ts64+0x86/0x230 [ 12.010357] kunit_try_run_case+0x1a5/0x480 [ 12.010380] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.010399] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.010424] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.010448] ? __kthread_parkme+0x82/0x180 [ 12.010471] ? preempt_count_sub+0x50/0x80 [ 12.010495] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.010515] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.010539] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.010562] kthread+0x337/0x6f0 [ 12.010580] ? trace_preempt_on+0x20/0xc0 [ 12.010604] ? __pfx_kthread+0x10/0x10 [ 12.010622] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.010644] ? calculate_sigpending+0x7b/0xa0 [ 12.010666] ? __pfx_kthread+0x10/0x10 [ 12.010684] ret_from_fork+0x41/0x80 [ 12.010706] ? __pfx_kthread+0x10/0x10 [ 12.010725] ret_from_fork_asm+0x1a/0x30 [ 12.010756] </TASK> [ 12.010767] [ 12.022609] Allocated by task 229: [ 12.022759] kasan_save_stack+0x45/0x70 [ 12.022925] kasan_save_track+0x18/0x40 [ 12.023067] kasan_save_alloc_info+0x3b/0x50 [ 12.023341] __kasan_slab_alloc+0x91/0xa0 [ 12.023617] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.024520] kmem_cache_double_free+0x14f/0x480 [ 12.024804] kunit_try_run_case+0x1a5/0x480 [ 12.025190] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.025416] kthread+0x337/0x6f0 [ 12.025808] ret_from_fork+0x41/0x80 [ 12.026153] ret_from_fork_asm+0x1a/0x30 [ 12.026451] [ 12.026540] Freed by task 229: [ 12.026765] kasan_save_stack+0x45/0x70 [ 12.027235] kasan_save_track+0x18/0x40 [ 12.027426] kasan_save_free_info+0x3f/0x60 [ 12.027675] __kasan_slab_free+0x56/0x70 [ 12.027973] kmem_cache_free+0x249/0x420 [ 12.028251] kmem_cache_double_free+0x16a/0x480 [ 12.028480] kunit_try_run_case+0x1a5/0x480 [ 12.028698] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.029117] kthread+0x337/0x6f0 [ 12.029292] ret_from_fork+0x41/0x80 [ 12.029473] ret_from_fork_asm+0x1a/0x30 [ 12.029673] [ 12.029748] The buggy address belongs to the object at ffff888103600000 [ 12.029748] which belongs to the cache test_cache of size 200 [ 12.030429] The buggy address is located 0 bytes inside of [ 12.030429] 200-byte region [ffff888103600000, ffff8881036000c8) [ 12.031629] [ 12.031792] The buggy address belongs to the physical page: [ 12.032464] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103600 [ 12.033277] flags: 0x200000000000000(node=0|zone=2) [ 12.033788] page_type: f5(slab) [ 12.034208] raw: 0200000000000000 ffff8881017443c0 dead000000000122 0000000000000000 [ 12.034948] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 12.035505] page dumped because: kasan: bad access detected [ 12.035688] [ 12.035760] Memory state around the buggy address: [ 12.035973] ffff8881035fff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.036304] ffff8881035fff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.036732] >ffff888103600000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.037092] ^ [ 12.037265] ffff888103600080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 12.037555] ffff888103600100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.037975] ==================================================================