Date
July 1, 2025, 3:08 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.276429] ================================================================== [ 18.276524] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 18.276619] Read of size 1 at addr fff00000c5b9b8c0 by task kunit_try_catch/216 [ 18.276687] [ 18.276730] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.276819] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.276845] Hardware name: linux,dummy-virt (DT) [ 18.276881] Call trace: [ 18.276914] show_stack+0x20/0x38 (C) [ 18.276970] dump_stack_lvl+0x8c/0xd0 [ 18.277020] print_report+0x118/0x608 [ 18.277068] kasan_report+0xdc/0x128 [ 18.277113] __kasan_check_byte+0x54/0x70 [ 18.277158] kmem_cache_destroy+0x34/0x218 [ 18.277207] kmem_cache_double_destroy+0x174/0x300 [ 18.277255] kunit_try_run_case+0x170/0x3f0 [ 18.277311] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.277374] kthread+0x328/0x630 [ 18.277418] ret_from_fork+0x10/0x20 [ 18.277466] [ 18.277485] Allocated by task 216: [ 18.277515] kasan_save_stack+0x3c/0x68 [ 18.277556] kasan_save_track+0x20/0x40 [ 18.277608] kasan_save_alloc_info+0x40/0x58 [ 18.277649] __kasan_slab_alloc+0xa8/0xb0 [ 18.277685] kmem_cache_alloc_noprof+0x10c/0x398 [ 18.277728] __kmem_cache_create_args+0x178/0x280 [ 18.277768] kmem_cache_double_destroy+0xc0/0x300 [ 18.277806] kunit_try_run_case+0x170/0x3f0 [ 18.277845] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.277889] kthread+0x328/0x630 [ 18.277922] ret_from_fork+0x10/0x20 [ 18.277959] [ 18.277979] Freed by task 216: [ 18.278006] kasan_save_stack+0x3c/0x68 [ 18.278044] kasan_save_track+0x20/0x40 [ 18.278081] kasan_save_free_info+0x4c/0x78 [ 18.278120] __kasan_slab_free+0x6c/0x98 [ 18.278157] kmem_cache_free+0x260/0x468 [ 18.278195] slab_kmem_cache_release+0x38/0x50 [ 18.278234] kmem_cache_release+0x1c/0x30 [ 18.278271] kobject_put+0x17c/0x420 [ 18.278307] sysfs_slab_release+0x1c/0x30 [ 18.278346] kmem_cache_destroy+0x118/0x218 [ 18.278383] kmem_cache_double_destroy+0x128/0x300 [ 18.278423] kunit_try_run_case+0x170/0x3f0 [ 18.278459] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.278503] kthread+0x328/0x630 [ 18.278536] ret_from_fork+0x10/0x20 [ 18.278581] [ 18.278600] The buggy address belongs to the object at fff00000c5b9b8c0 [ 18.278600] which belongs to the cache kmem_cache of size 208 [ 18.278659] The buggy address is located 0 bytes inside of [ 18.278659] freed 208-byte region [fff00000c5b9b8c0, fff00000c5b9b990) [ 18.278723] [ 18.278745] The buggy address belongs to the physical page: [ 18.278780] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105b9b [ 18.278837] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.278891] page_type: f5(slab) [ 18.278934] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 18.278986] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 18.279027] page dumped because: kasan: bad access detected [ 18.279060] [ 18.279077] Memory state around the buggy address: [ 18.279114] fff00000c5b9b780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.279158] fff00000c5b9b800: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 18.279200] >fff00000c5b9b880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 18.279240] ^ [ 18.279276] fff00000c5b9b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 18.279319] fff00000c5b9b980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.279359] ==================================================================
[ 12.482769] ================================================================== [ 12.483424] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 12.484254] Read of size 1 at addr ffff8881015c4a00 by task kunit_try_catch/232 [ 12.484628] [ 12.484870] CPU: 1 UID: 0 PID: 232 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 12.484963] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.484999] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.485082] Call Trace: [ 12.485097] <TASK> [ 12.485119] dump_stack_lvl+0x73/0xb0 [ 12.485164] print_report+0xd1/0x650 [ 12.485189] ? __virt_addr_valid+0x1db/0x2d0 [ 12.485214] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.485238] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.485259] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.485284] kasan_report+0x141/0x180 [ 12.485305] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.485331] ? kmem_cache_double_destroy+0x1bf/0x380 [ 12.485355] __kasan_check_byte+0x3d/0x50 [ 12.485376] kmem_cache_destroy+0x25/0x1d0 [ 12.485399] kmem_cache_double_destroy+0x1bf/0x380 [ 12.485422] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 12.485445] ? finish_task_switch.isra.0+0x153/0x700 [ 12.485468] ? __switch_to+0x47/0xf50 [ 12.485497] ? __pfx_read_tsc+0x10/0x10 [ 12.485518] ? ktime_get_ts64+0x86/0x230 [ 12.485543] kunit_try_run_case+0x1a5/0x480 [ 12.485570] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.485591] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.485615] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.485636] ? __kthread_parkme+0x82/0x180 [ 12.485658] ? preempt_count_sub+0x50/0x80 [ 12.485680] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.485703] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.485724] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.485747] kthread+0x337/0x6f0 [ 12.485766] ? trace_preempt_on+0x20/0xc0 [ 12.485789] ? __pfx_kthread+0x10/0x10 [ 12.485809] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.485829] ? calculate_sigpending+0x7b/0xa0 [ 12.485853] ? __pfx_kthread+0x10/0x10 [ 12.485873] ret_from_fork+0x116/0x1d0 [ 12.485891] ? __pfx_kthread+0x10/0x10 [ 12.485911] ret_from_fork_asm+0x1a/0x30 [ 12.485942] </TASK> [ 12.485955] [ 12.495470] Allocated by task 232: [ 12.495897] kasan_save_stack+0x45/0x70 [ 12.496092] kasan_save_track+0x18/0x40 [ 12.496235] kasan_save_alloc_info+0x3b/0x50 [ 12.496395] __kasan_slab_alloc+0x91/0xa0 [ 12.497073] kmem_cache_alloc_noprof+0x123/0x3f0 [ 12.497552] __kmem_cache_create_args+0x169/0x240 [ 12.497929] kmem_cache_double_destroy+0xd5/0x380 [ 12.498295] kunit_try_run_case+0x1a5/0x480 [ 12.498662] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.499069] kthread+0x337/0x6f0 [ 12.499344] ret_from_fork+0x116/0x1d0 [ 12.499638] ret_from_fork_asm+0x1a/0x30 [ 12.499929] [ 12.500009] Freed by task 232: [ 12.500189] kasan_save_stack+0x45/0x70 [ 12.500385] kasan_save_track+0x18/0x40 [ 12.500788] kasan_save_free_info+0x3f/0x60 [ 12.501196] __kasan_slab_free+0x56/0x70 [ 12.501470] kmem_cache_free+0x249/0x420 [ 12.501665] slab_kmem_cache_release+0x2e/0x40 [ 12.502156] kmem_cache_release+0x16/0x20 [ 12.502367] kobject_put+0x181/0x450 [ 12.502544] sysfs_slab_release+0x16/0x20 [ 12.502938] kmem_cache_destroy+0xf0/0x1d0 [ 12.503232] kmem_cache_double_destroy+0x14e/0x380 [ 12.503410] kunit_try_run_case+0x1a5/0x480 [ 12.504019] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.504402] kthread+0x337/0x6f0 [ 12.504581] ret_from_fork+0x116/0x1d0 [ 12.504871] ret_from_fork_asm+0x1a/0x30 [ 12.505061] [ 12.505163] The buggy address belongs to the object at ffff8881015c4a00 [ 12.505163] which belongs to the cache kmem_cache of size 208 [ 12.505646] The buggy address is located 0 bytes inside of [ 12.505646] freed 208-byte region [ffff8881015c4a00, ffff8881015c4ad0) [ 12.506489] [ 12.506663] The buggy address belongs to the physical page: [ 12.507113] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1015c4 [ 12.507467] flags: 0x200000000000000(node=0|zone=2) [ 12.508078] page_type: f5(slab) [ 12.508257] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 12.508543] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 12.508971] page dumped because: kasan: bad access detected [ 12.509225] [ 12.509316] Memory state around the buggy address: [ 12.509523] ffff8881015c4900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.510176] ffff8881015c4980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.510466] >ffff8881015c4a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 12.510876] ^ [ 12.511187] ffff8881015c4a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 12.511618] ffff8881015c4b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.512076] ==================================================================