Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.360515] ================================================================== [ 16.360612] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 16.360744] Free of addr fff00000c594f000 by task kunit_try_catch/210 [ 16.360819] [ 16.361250] CPU: 1 UID: 0 PID: 210 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.361792] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.361873] Hardware name: linux,dummy-virt (DT) [ 16.361991] Call trace: [ 16.362042] show_stack+0x20/0x38 (C) [ 16.362268] dump_stack_lvl+0x8c/0xd0 [ 16.362365] print_report+0x118/0x5d0 [ 16.362747] kasan_report_invalid_free+0xc0/0xe8 [ 16.362851] check_slab_allocation+0xd4/0x108 [ 16.363017] __kasan_slab_pre_free+0x2c/0x48 [ 16.363099] kmem_cache_free+0xf0/0x468 [ 16.363463] kmem_cache_double_free+0x190/0x3c8 [ 16.363555] kunit_try_run_case+0x170/0x3f0 [ 16.363852] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.364255] kthread+0x328/0x630 [ 16.364370] ret_from_fork+0x10/0x20 [ 16.364547] [ 16.364678] Allocated by task 210: [ 16.364801] kasan_save_stack+0x3c/0x68 [ 16.364847] kasan_save_track+0x20/0x40 [ 16.364883] kasan_save_alloc_info+0x40/0x58 [ 16.365164] __kasan_slab_alloc+0xa8/0xb0 [ 16.365252] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.365343] kmem_cache_double_free+0x12c/0x3c8 [ 16.365385] kunit_try_run_case+0x170/0x3f0 [ 16.365423] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.365464] kthread+0x328/0x630 [ 16.365507] ret_from_fork+0x10/0x20 [ 16.365542] [ 16.365796] Freed by task 210: [ 16.365920] kasan_save_stack+0x3c/0x68 [ 16.365980] kasan_save_track+0x20/0x40 [ 16.366020] kasan_save_free_info+0x4c/0x78 [ 16.366420] __kasan_slab_free+0x6c/0x98 [ 16.366527] kmem_cache_free+0x260/0x468 [ 16.366675] kmem_cache_double_free+0x140/0x3c8 [ 16.366763] kunit_try_run_case+0x170/0x3f0 [ 16.366963] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.367011] kthread+0x328/0x630 [ 16.367387] ret_from_fork+0x10/0x20 [ 16.367461] [ 16.367528] The buggy address belongs to the object at fff00000c594f000 [ 16.367528] which belongs to the cache test_cache of size 200 [ 16.367630] The buggy address is located 0 bytes inside of [ 16.367630] 200-byte region [fff00000c594f000, fff00000c594f0c8) [ 16.367810] [ 16.367889] The buggy address belongs to the physical page: [ 16.368169] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10594f [ 16.368272] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.368427] page_type: f5(slab) [ 16.368602] raw: 0bfffe0000000000 fff00000c590f500 dead000000000122 0000000000000000 [ 16.368690] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 16.368759] page dumped because: kasan: bad access detected [ 16.369076] [ 16.369362] Memory state around the buggy address: [ 16.369477] fff00000c594ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.369534] fff00000c594ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.369586] >fff00000c594f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.369922] ^ [ 16.370060] fff00000c594f080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 16.370241] fff00000c594f100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.370329] ==================================================================
[ 13.241176] ================================================================== [ 13.241846] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 13.242152] Free of addr ffff8881032d4000 by task kunit_try_catch/226 [ 13.242427] [ 13.242746] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.242803] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.242814] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.242834] Call Trace: [ 13.242845] <TASK> [ 13.242860] dump_stack_lvl+0x73/0xb0 [ 13.242891] print_report+0xd1/0x610 [ 13.242925] ? __virt_addr_valid+0x1db/0x2d0 [ 13.242949] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.242984] ? kmem_cache_double_free+0x1e5/0x480 [ 13.243011] kasan_report_invalid_free+0x10a/0x130 [ 13.243035] ? kmem_cache_double_free+0x1e5/0x480 [ 13.243062] ? kmem_cache_double_free+0x1e5/0x480 [ 13.243088] check_slab_allocation+0x101/0x130 [ 13.243111] __kasan_slab_pre_free+0x28/0x40 [ 13.243132] kmem_cache_free+0xed/0x420 [ 13.243153] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.243183] ? kmem_cache_double_free+0x1e5/0x480 [ 13.243211] kmem_cache_double_free+0x1e5/0x480 [ 13.243236] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 13.243272] ? finish_task_switch.isra.0+0x153/0x700 [ 13.243295] ? __switch_to+0x47/0xf50 [ 13.243322] ? __pfx_read_tsc+0x10/0x10 [ 13.243409] ? ktime_get_ts64+0x86/0x230 [ 13.243435] kunit_try_run_case+0x1a5/0x480 [ 13.243472] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.243496] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.243522] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.243548] ? __kthread_parkme+0x82/0x180 [ 13.243568] ? preempt_count_sub+0x50/0x80 [ 13.243592] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.243616] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.243641] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.243668] kthread+0x337/0x6f0 [ 13.243688] ? trace_preempt_on+0x20/0xc0 [ 13.243712] ? __pfx_kthread+0x10/0x10 [ 13.243732] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.243764] ? calculate_sigpending+0x7b/0xa0 [ 13.243789] ? __pfx_kthread+0x10/0x10 [ 13.243811] ret_from_fork+0x116/0x1d0 [ 13.243829] ? __pfx_kthread+0x10/0x10 [ 13.243850] ret_from_fork_asm+0x1a/0x30 [ 13.243881] </TASK> [ 13.243891] [ 13.256791] Allocated by task 226: [ 13.257223] kasan_save_stack+0x45/0x70 [ 13.257734] kasan_save_track+0x18/0x40 [ 13.257912] kasan_save_alloc_info+0x3b/0x50 [ 13.258210] __kasan_slab_alloc+0x91/0xa0 [ 13.258688] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.259022] kmem_cache_double_free+0x14f/0x480 [ 13.259395] kunit_try_run_case+0x1a5/0x480 [ 13.259777] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.260142] kthread+0x337/0x6f0 [ 13.260369] ret_from_fork+0x116/0x1d0 [ 13.260717] ret_from_fork_asm+0x1a/0x30 [ 13.260939] [ 13.261023] Freed by task 226: [ 13.261178] kasan_save_stack+0x45/0x70 [ 13.261796] kasan_save_track+0x18/0x40 [ 13.261988] kasan_save_free_info+0x3f/0x60 [ 13.262406] __kasan_slab_free+0x56/0x70 [ 13.262700] kmem_cache_free+0x249/0x420 [ 13.262860] kmem_cache_double_free+0x16a/0x480 [ 13.263087] kunit_try_run_case+0x1a5/0x480 [ 13.263276] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.263805] kthread+0x337/0x6f0 [ 13.263932] ret_from_fork+0x116/0x1d0 [ 13.264260] ret_from_fork_asm+0x1a/0x30 [ 13.264624] [ 13.264846] The buggy address belongs to the object at ffff8881032d4000 [ 13.264846] which belongs to the cache test_cache of size 200 [ 13.265605] The buggy address is located 0 bytes inside of [ 13.265605] 200-byte region [ffff8881032d4000, ffff8881032d40c8) [ 13.266046] [ 13.266354] The buggy address belongs to the physical page: [ 13.266919] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1032d4 [ 13.267247] flags: 0x200000000000000(node=0|zone=2) [ 13.267691] page_type: f5(slab) [ 13.267873] raw: 0200000000000000 ffff88810153adc0 dead000000000122 0000000000000000 [ 13.268214] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 13.268884] page dumped because: kasan: bad access detected [ 13.269131] [ 13.269210] Memory state around the buggy address: [ 13.269784] ffff8881032d3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.270232] ffff8881032d3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.270933] >ffff8881032d4000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.271206] ^ [ 13.271392] ffff8881032d4080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 13.271961] ffff8881032d4100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.272395] ==================================================================