Date
May 15, 2025, 10:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.320622] ================================================================== [ 19.320695] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 19.320763] Read of size 1 at addr fff00000c1736500 by task kunit_try_catch/215 [ 19.320812] [ 19.320851] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT [ 19.320940] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.320967] Hardware name: linux,dummy-virt (DT) [ 19.321001] Call trace: [ 19.321026] show_stack+0x20/0x38 (C) [ 19.321079] dump_stack_lvl+0x8c/0xd0 [ 19.321130] print_report+0x118/0x608 [ 19.321192] kasan_report+0xdc/0x128 [ 19.321239] __kasan_check_byte+0x54/0x70 [ 19.321285] kmem_cache_destroy+0x34/0x218 [ 19.321334] kmem_cache_double_destroy+0x174/0x300 [ 19.321384] kunit_try_run_case+0x170/0x3f0 [ 19.321433] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.321485] kthread+0x328/0x630 [ 19.321533] ret_from_fork+0x10/0x20 [ 19.321581] [ 19.321601] Allocated by task 215: [ 19.321631] kasan_save_stack+0x3c/0x68 [ 19.321673] kasan_save_track+0x20/0x40 [ 19.321711] kasan_save_alloc_info+0x40/0x58 [ 19.321754] __kasan_slab_alloc+0xa8/0xb0 [ 19.321795] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 19.321843] __kmem_cache_create_args+0x178/0x280 [ 19.321883] kmem_cache_double_destroy+0xc0/0x300 [ 19.321923] kunit_try_run_case+0x170/0x3f0 [ 19.321961] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.322004] kthread+0x328/0x630 [ 19.322041] ret_from_fork+0x10/0x20 [ 19.322079] [ 19.322097] Freed by task 215: [ 19.322124] kasan_save_stack+0x3c/0x68 [ 19.322169] kasan_save_track+0x20/0x40 [ 19.322206] kasan_save_free_info+0x4c/0x78 [ 19.322244] __kasan_slab_free+0x6c/0x98 [ 19.322280] kmem_cache_free+0x260/0x470 [ 19.322317] slab_kmem_cache_release+0x38/0x50 [ 19.322356] kmem_cache_release+0x1c/0x30 [ 19.322393] kobject_put+0x17c/0x430 [ 19.322432] sysfs_slab_release+0x1c/0x30 [ 19.322471] kmem_cache_destroy+0x118/0x218 [ 19.322507] kmem_cache_double_destroy+0x128/0x300 [ 19.322546] kunit_try_run_case+0x170/0x3f0 [ 19.322582] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.322625] kthread+0x328/0x630 [ 19.322660] ret_from_fork+0x10/0x20 [ 19.322696] [ 19.322717] The buggy address belongs to the object at fff00000c1736500 [ 19.322717] which belongs to the cache kmem_cache of size 208 [ 19.322778] The buggy address is located 0 bytes inside of [ 19.322778] freed 208-byte region [fff00000c1736500, fff00000c17365d0) [ 19.322838] [ 19.322860] The buggy address belongs to the physical page: [ 19.322891] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101736 [ 19.322946] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.322996] page_type: f5(slab) [ 19.323038] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 19.323087] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 19.323127] page dumped because: kasan: bad access detected [ 19.323168] [ 19.323186] Memory state around the buggy address: [ 19.323221] fff00000c1736400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.323266] fff00000c1736480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.323309] >fff00000c1736500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 19.323347] ^ [ 19.323374] fff00000c1736580: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 19.323417] fff00000c1736600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.323456] ==================================================================
[ 15.034267] ================================================================== [ 15.034788] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 15.035324] Read of size 1 at addr ffff8881009b3a00 by task kunit_try_catch/233 [ 15.035678] [ 15.035821] CPU: 0 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) [ 15.036053] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.036077] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.036116] Call Trace: [ 15.036140] <TASK> [ 15.036174] dump_stack_lvl+0x73/0xb0 [ 15.036248] print_report+0xd1/0x650 [ 15.036298] ? __virt_addr_valid+0x1db/0x2d0 [ 15.036350] ? kmem_cache_double_destroy+0x1bf/0x380 [ 15.036395] ? kasan_complete_mode_report_info+0x64/0x200 [ 15.036443] ? kmem_cache_double_destroy+0x1bf/0x380 [ 15.036484] kasan_report+0x141/0x180 [ 15.036523] ? kmem_cache_double_destroy+0x1bf/0x380 [ 15.036562] ? kmem_cache_double_destroy+0x1bf/0x380 [ 15.036596] __kasan_check_byte+0x3d/0x50 [ 15.036638] kmem_cache_destroy+0x25/0x1d0 [ 15.036684] kmem_cache_double_destroy+0x1bf/0x380 [ 15.036720] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 15.036982] ? finish_task_switch.isra.0+0x153/0x700 [ 15.037034] ? __switch_to+0x47/0xf50 [ 15.037109] ? __pfx_read_tsc+0x10/0x10 [ 15.037172] ? ktime_get_ts64+0x86/0x230 [ 15.037234] kunit_try_run_case+0x1a5/0x480 [ 15.037273] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.037298] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.037323] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.037346] ? __kthread_parkme+0x82/0x180 [ 15.037376] ? preempt_count_sub+0x50/0x80 [ 15.037416] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.037456] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.037498] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.037540] kthread+0x337/0x6f0 [ 15.037587] ? trace_preempt_on+0x20/0xc0 [ 15.037650] ? __pfx_kthread+0x10/0x10 [ 15.037694] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.037730] ? calculate_sigpending+0x7b/0xa0 [ 15.037778] ? __pfx_kthread+0x10/0x10 [ 15.037820] ret_from_fork+0x116/0x1d0 [ 15.037955] ? __pfx_kthread+0x10/0x10 [ 15.037995] ret_from_fork_asm+0x1a/0x30 [ 15.038056] </TASK> [ 15.038077] [ 15.050094] Allocated by task 233: [ 15.050465] kasan_save_stack+0x45/0x70 [ 15.050861] kasan_save_track+0x18/0x40 [ 15.051056] kasan_save_alloc_info+0x3b/0x50 [ 15.051250] __kasan_slab_alloc+0x91/0xa0 [ 15.051559] kmem_cache_alloc_noprof+0x123/0x3f0 [ 15.052698] __kmem_cache_create_args+0x169/0x240 [ 15.053113] kmem_cache_double_destroy+0xd5/0x380 [ 15.053656] kunit_try_run_case+0x1a5/0x480 [ 15.053978] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.054433] kthread+0x337/0x6f0 [ 15.054846] ret_from_fork+0x116/0x1d0 [ 15.055059] ret_from_fork_asm+0x1a/0x30 [ 15.055239] [ 15.055328] Freed by task 233: [ 15.055629] kasan_save_stack+0x45/0x70 [ 15.056464] kasan_save_track+0x18/0x40 [ 15.057065] kasan_save_free_info+0x3f/0x60 [ 15.057372] __kasan_slab_free+0x56/0x70 [ 15.057692] kmem_cache_free+0x249/0x420 [ 15.057930] slab_kmem_cache_release+0x2e/0x40 [ 15.058284] kmem_cache_release+0x16/0x20 [ 15.058723] kobject_put+0x181/0x450 [ 15.058967] sysfs_slab_release+0x16/0x20 [ 15.059333] kmem_cache_destroy+0xf0/0x1d0 [ 15.059575] kmem_cache_double_destroy+0x14e/0x380 [ 15.059770] kunit_try_run_case+0x1a5/0x480 [ 15.060874] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.061572] kthread+0x337/0x6f0 [ 15.061854] ret_from_fork+0x116/0x1d0 [ 15.062120] ret_from_fork_asm+0x1a/0x30 [ 15.062441] [ 15.062568] The buggy address belongs to the object at ffff8881009b3a00 [ 15.062568] which belongs to the cache kmem_cache of size 208 [ 15.063330] The buggy address is located 0 bytes inside of [ 15.063330] freed 208-byte region [ffff8881009b3a00, ffff8881009b3ad0) [ 15.064063] [ 15.064181] The buggy address belongs to the physical page: [ 15.064393] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1009b3 [ 15.064850] flags: 0x200000000000000(node=0|zone=2) [ 15.065347] page_type: f5(slab) [ 15.065706] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 15.066163] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 15.067261] page dumped because: kasan: bad access detected [ 15.067506] [ 15.067615] Memory state around the buggy address: [ 15.067813] ffff8881009b3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.068373] ffff8881009b3980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.068990] >ffff8881009b3a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 15.069560] ^ [ 15.069991] ffff8881009b3a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 15.070419] ffff8881009b3b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.071269] ==================================================================