Date
July 12, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.094953] ================================================================== [ 21.095223] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 21.095401] Read of size 1 at addr fff00000c5801b40 by task kunit_try_catch/216 [ 21.095529] [ 21.095620] CPU: 0 UID: 0 PID: 216 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 21.095847] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.095918] Hardware name: linux,dummy-virt (DT) [ 21.095997] Call trace: [ 21.096058] show_stack+0x20/0x38 (C) [ 21.096177] dump_stack_lvl+0x8c/0xd0 [ 21.096304] print_report+0x118/0x608 [ 21.096417] kasan_report+0xdc/0x128 [ 21.096530] __kasan_check_byte+0x54/0x70 [ 21.096641] kmem_cache_destroy+0x34/0x218 [ 21.096761] kmem_cache_double_destroy+0x174/0x300 [ 21.098133] kunit_try_run_case+0x170/0x3f0 [ 21.098416] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.098534] kthread+0x328/0x630 [ 21.098620] ret_from_fork+0x10/0x20 [ 21.098724] [ 21.098810] Allocated by task 216: [ 21.098899] kasan_save_stack+0x3c/0x68 [ 21.098993] kasan_save_track+0x20/0x40 [ 21.099405] kasan_save_alloc_info+0x40/0x58 [ 21.099617] __kasan_slab_alloc+0xa8/0xb0 [ 21.099736] kmem_cache_alloc_noprof+0x10c/0x398 [ 21.099856] __kmem_cache_create_args+0x178/0x280 [ 21.099964] kmem_cache_double_destroy+0xc0/0x300 [ 21.100085] kunit_try_run_case+0x170/0x3f0 [ 21.100176] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.100310] kthread+0x328/0x630 [ 21.100441] ret_from_fork+0x10/0x20 [ 21.100537] [ 21.100590] Freed by task 216: [ 21.100661] kasan_save_stack+0x3c/0x68 [ 21.100766] kasan_save_track+0x20/0x40 [ 21.100980] kasan_save_free_info+0x4c/0x78 [ 21.101265] __kasan_slab_free+0x6c/0x98 [ 21.101791] kmem_cache_free+0x260/0x468 [ 21.101961] slab_kmem_cache_release+0x38/0x50 [ 21.102062] kmem_cache_release+0x1c/0x30 [ 21.102144] kobject_put+0x17c/0x420 [ 21.102220] sysfs_slab_release+0x1c/0x30 [ 21.102301] kmem_cache_destroy+0x118/0x218 [ 21.102394] kmem_cache_double_destroy+0x128/0x300 [ 21.102499] kunit_try_run_case+0x170/0x3f0 [ 21.102642] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.102746] kthread+0x328/0x630 [ 21.103503] ret_from_fork+0x10/0x20 [ 21.103650] [ 21.103711] The buggy address belongs to the object at fff00000c5801b40 [ 21.103711] which belongs to the cache kmem_cache of size 208 [ 21.104096] The buggy address is located 0 bytes inside of [ 21.104096] freed 208-byte region [fff00000c5801b40, fff00000c5801c10) [ 21.104294] [ 21.104698] The buggy address belongs to the physical page: [ 21.104790] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105801 [ 21.105229] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 21.105387] page_type: f5(slab) [ 21.105486] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 21.106180] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 21.106334] page dumped because: kasan: bad access detected [ 21.106442] [ 21.106488] Memory state around the buggy address: [ 21.106570] fff00000c5801a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.106661] fff00000c5801a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 21.106787] >fff00000c5801b00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 21.106924] ^ [ 21.107014] fff00000c5801b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 21.107129] fff00000c5801c00: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.107230] ==================================================================
[ 13.460086] ================================================================== [ 13.460553] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.460928] Read of size 1 at addr ffff888101020a00 by task kunit_try_catch/233 [ 13.461203] [ 13.461344] CPU: 1 UID: 0 PID: 233 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 13.461390] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.461401] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.461434] Call Trace: [ 13.461447] <TASK> [ 13.461466] dump_stack_lvl+0x73/0xb0 [ 13.461498] print_report+0xd1/0x650 [ 13.461531] ? __virt_addr_valid+0x1db/0x2d0 [ 13.461556] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.461581] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.461604] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.461629] kasan_report+0x141/0x180 [ 13.461683] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.461711] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.461737] __kasan_check_byte+0x3d/0x50 [ 13.461770] kmem_cache_destroy+0x25/0x1d0 [ 13.461794] kmem_cache_double_destroy+0x1bf/0x380 [ 13.461820] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.461845] ? finish_task_switch.isra.0+0x153/0x700 [ 13.461868] ? __switch_to+0x47/0xf50 [ 13.461896] ? __pfx_read_tsc+0x10/0x10 [ 13.461937] ? ktime_get_ts64+0x86/0x230 [ 13.461962] kunit_try_run_case+0x1a5/0x480 [ 13.461988] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.462011] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.462036] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.462060] ? __kthread_parkme+0x82/0x180 [ 13.462081] ? preempt_count_sub+0x50/0x80 [ 13.462124] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.462148] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.462172] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.462197] kthread+0x337/0x6f0 [ 13.462216] ? trace_preempt_on+0x20/0xc0 [ 13.462240] ? __pfx_kthread+0x10/0x10 [ 13.462260] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.462281] ? calculate_sigpending+0x7b/0xa0 [ 13.462306] ? __pfx_kthread+0x10/0x10 [ 13.462327] ret_from_fork+0x116/0x1d0 [ 13.462346] ? __pfx_kthread+0x10/0x10 [ 13.462370] ret_from_fork_asm+0x1a/0x30 [ 13.462401] </TASK> [ 13.462412] [ 13.471120] Allocated by task 233: [ 13.471330] kasan_save_stack+0x45/0x70 [ 13.471521] kasan_save_track+0x18/0x40 [ 13.471736] kasan_save_alloc_info+0x3b/0x50 [ 13.471981] __kasan_slab_alloc+0x91/0xa0 [ 13.472173] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.472433] __kmem_cache_create_args+0x169/0x240 [ 13.472733] kmem_cache_double_destroy+0xd5/0x380 [ 13.473050] kunit_try_run_case+0x1a5/0x480 [ 13.473255] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.473425] kthread+0x337/0x6f0 [ 13.473542] ret_from_fork+0x116/0x1d0 [ 13.473939] ret_from_fork_asm+0x1a/0x30 [ 13.474166] [ 13.474315] Freed by task 233: [ 13.474503] kasan_save_stack+0x45/0x70 [ 13.474776] kasan_save_track+0x18/0x40 [ 13.475039] kasan_save_free_info+0x3f/0x60 [ 13.475269] __kasan_slab_free+0x56/0x70 [ 13.475425] kmem_cache_free+0x249/0x420 [ 13.475608] slab_kmem_cache_release+0x2e/0x40 [ 13.475852] kmem_cache_release+0x16/0x20 [ 13.476050] kobject_put+0x181/0x450 [ 13.476236] sysfs_slab_release+0x16/0x20 [ 13.476496] kmem_cache_destroy+0xf0/0x1d0 [ 13.476635] kmem_cache_double_destroy+0x14e/0x380 [ 13.476976] kunit_try_run_case+0x1a5/0x480 [ 13.477385] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.477581] kthread+0x337/0x6f0 [ 13.477824] ret_from_fork+0x116/0x1d0 [ 13.478023] ret_from_fork_asm+0x1a/0x30 [ 13.478457] [ 13.478530] The buggy address belongs to the object at ffff888101020a00 [ 13.478530] which belongs to the cache kmem_cache of size 208 [ 13.479441] The buggy address is located 0 bytes inside of [ 13.479441] freed 208-byte region [ffff888101020a00, ffff888101020ad0) [ 13.479964] [ 13.480045] The buggy address belongs to the physical page: [ 13.480214] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101020 [ 13.480591] flags: 0x200000000000000(node=0|zone=2) [ 13.480975] page_type: f5(slab) [ 13.481094] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.481587] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.481874] page dumped because: kasan: bad access detected [ 13.482126] [ 13.482212] Memory state around the buggy address: [ 13.482408] ffff888101020900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.482618] ffff888101020980: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.482967] >ffff888101020a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.483517] ^ [ 13.483743] ffff888101020a80: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.484040] ffff888101020b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.484321] ==================================================================