Date
July 9, 2025, 2:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.524814] ================================================================== [ 18.524903] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.524981] Read of size 1 at addr fff00000c582b8c0 by task kunit_try_catch/215 [ 18.525034] [ 18.525076] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B W N 6.16.0-rc5 #1 PREEMPT [ 18.525184] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 18.525213] Hardware name: linux,dummy-virt (DT) [ 18.525248] Call trace: [ 18.525274] show_stack+0x20/0x38 (C) [ 18.525328] dump_stack_lvl+0x8c/0xd0 [ 18.525380] print_report+0x118/0x608 [ 18.525429] kasan_report+0xdc/0x128 [ 18.525475] __kasan_check_byte+0x54/0x70 [ 18.525524] kmem_cache_destroy+0x34/0x218 [ 18.525573] kmem_cache_double_destroy+0x174/0x300 [ 18.525653] kunit_try_run_case+0x170/0x3f0 [ 18.525703] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.525757] kthread+0x328/0x630 [ 18.525803] ret_from_fork+0x10/0x20 [ 18.525857] [ 18.525877] Allocated by task 215: [ 18.525907] kasan_save_stack+0x3c/0x68 [ 18.525950] kasan_save_track+0x20/0x40 [ 18.525989] kasan_save_alloc_info+0x40/0x58 [ 18.526031] __kasan_slab_alloc+0xa8/0xb0 [ 18.526068] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.526121] __kmem_cache_create_args+0x178/0x280 [ 18.526161] kmem_cache_double_destroy+0xc0/0x300 [ 18.526202] kunit_try_run_case+0x170/0x3f0 [ 18.526240] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.526286] kthread+0x328/0x630 [ 18.526320] ret_from_fork+0x10/0x20 [ 18.526359] [ 18.526376] Freed by task 215: [ 18.526404] kasan_save_stack+0x3c/0x68 [ 18.526443] kasan_save_track+0x20/0x40 [ 18.526482] kasan_save_free_info+0x4c/0x78 [ 18.526523] __kasan_slab_free+0x6c/0x98 [ 18.526566] kmem_cache_free+0x260/0x468 [ 18.526604] slab_kmem_cache_release+0x38/0x50 [ 18.526643] kmem_cache_release+0x1c/0x30 [ 18.526681] kobject_put+0x17c/0x420 [ 18.526718] sysfs_slab_release+0x1c/0x30 [ 18.526757] kmem_cache_destroy+0x118/0x218 [ 18.526795] kmem_cache_double_destroy+0x128/0x300 [ 18.526836] kunit_try_run_case+0x170/0x3f0 [ 18.526873] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.526916] kthread+0x328/0x630 [ 18.526952] ret_from_fork+0x10/0x20 [ 18.526987] [ 18.527007] The buggy address belongs to the object at fff00000c582b8c0 [ 18.527007] which belongs to the cache kmem_cache of size 208 [ 18.527066] The buggy address is located 0 bytes inside of [ 18.527066] freed 208-byte region [fff00000c582b8c0, fff00000c582b990) [ 18.527138] [ 18.527159] The buggy address belongs to the physical page: [ 18.527192] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10582b [ 18.527249] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.527301] page_type: f5(slab) [ 18.527345] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.527396] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.527438] page dumped because: kasan: bad access detected [ 18.527469] [ 18.527486] Memory state around the buggy address: [ 18.527520] fff00000c582b780: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.527564] fff00000c582b800: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 18.527607] >fff00000c582b880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 18.527647] ^ [ 18.527682] fff00000c582b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.527725] fff00000c582b980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.527764] ==================================================================
[ 13.629556] ================================================================== [ 13.630420] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.630967] Read of size 1 at addr ffff888100eebdc0 by task kunit_try_catch/232 [ 13.631728] [ 13.632136] CPU: 0 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.632190] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.632201] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.632223] Call Trace: [ 13.632239] <TASK> [ 13.632259] dump_stack_lvl+0x73/0xb0 [ 13.632295] print_report+0xd1/0x650 [ 13.632319] ? __virt_addr_valid+0x1db/0x2d0 [ 13.632344] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.632370] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.632393] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.632419] kasan_report+0x141/0x180 [ 13.632441] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.632468] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.632493] __kasan_check_byte+0x3d/0x50 [ 13.632515] kmem_cache_destroy+0x25/0x1d0 [ 13.632539] kmem_cache_double_destroy+0x1bf/0x380 [ 13.632564] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.632589] ? finish_task_switch.isra.0+0x153/0x700 [ 13.632630] ? __switch_to+0x47/0xf50 [ 13.632659] ? __pfx_read_tsc+0x10/0x10 [ 13.632681] ? ktime_get_ts64+0x86/0x230 [ 13.632707] kunit_try_run_case+0x1a5/0x480 [ 13.632734] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.632757] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.632793] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.632830] ? __kthread_parkme+0x82/0x180 [ 13.632853] ? preempt_count_sub+0x50/0x80 [ 13.632875] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.632899] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.632924] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.632949] kthread+0x337/0x6f0 [ 13.632967] ? trace_preempt_on+0x20/0xc0 [ 13.632991] ? __pfx_kthread+0x10/0x10 [ 13.633011] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.633032] ? calculate_sigpending+0x7b/0xa0 [ 13.633057] ? __pfx_kthread+0x10/0x10 [ 13.633078] ret_from_fork+0x116/0x1d0 [ 13.633098] ? __pfx_kthread+0x10/0x10 [ 13.633118] ret_from_fork_asm+0x1a/0x30 [ 13.633152] </TASK> [ 13.633162] [ 13.644512] Allocated by task 232: [ 13.644719] kasan_save_stack+0x45/0x70 [ 13.645067] kasan_save_track+0x18/0x40 [ 13.645231] kasan_save_alloc_info+0x3b/0x50 [ 13.645449] __kasan_slab_alloc+0x91/0xa0 [ 13.645618] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.645894] __kmem_cache_create_args+0x169/0x240 [ 13.646145] kmem_cache_double_destroy+0xd5/0x380 [ 13.646351] kunit_try_run_case+0x1a5/0x480 [ 13.646564] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.646757] kthread+0x337/0x6f0 [ 13.646930] ret_from_fork+0x116/0x1d0 [ 13.647125] ret_from_fork_asm+0x1a/0x30 [ 13.647299] [ 13.647713] Freed by task 232: [ 13.647916] kasan_save_stack+0x45/0x70 [ 13.648110] kasan_save_track+0x18/0x40 [ 13.648263] kasan_save_free_info+0x3f/0x60 [ 13.648441] __kasan_slab_free+0x56/0x70 [ 13.648656] kmem_cache_free+0x249/0x420 [ 13.649523] slab_kmem_cache_release+0x2e/0x40 [ 13.649721] kmem_cache_release+0x16/0x20 [ 13.650025] kobject_put+0x181/0x450 [ 13.650479] sysfs_slab_release+0x16/0x20 [ 13.650761] kmem_cache_destroy+0xf0/0x1d0 [ 13.651155] kmem_cache_double_destroy+0x14e/0x380 [ 13.651391] kunit_try_run_case+0x1a5/0x480 [ 13.651610] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.652122] kthread+0x337/0x6f0 [ 13.652289] ret_from_fork+0x116/0x1d0 [ 13.652456] ret_from_fork_asm+0x1a/0x30 [ 13.653050] [ 13.653162] The buggy address belongs to the object at ffff888100eebdc0 [ 13.653162] which belongs to the cache kmem_cache of size 208 [ 13.653625] The buggy address is located 0 bytes inside of [ 13.653625] freed 208-byte region [ffff888100eebdc0, ffff888100eebe90) [ 13.654141] [ 13.654241] The buggy address belongs to the physical page: [ 13.654466] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100eeb [ 13.654812] flags: 0x200000000000000(node=0|zone=2) [ 13.655006] page_type: f5(slab) [ 13.655209] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.655584] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.655914] page dumped because: kasan: bad access detected [ 13.656150] [ 13.656242] Memory state around the buggy address: [ 13.656425] ffff888100eebc80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.656671] ffff888100eebd00: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.657149] >ffff888100eebd80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.657689] ^ [ 13.658554] ffff888100eebe00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.659074] ffff888100eebe80: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.659460] ==================================================================