Date
July 18, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.744135] ================================================================== [ 16.744209] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x174/0x300 [ 16.744289] Read of size 1 at addr fff00000c5a56000 by task kunit_try_catch/215 [ 16.744355] [ 16.744400] CPU: 0 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 16.744489] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.744515] Hardware name: linux,dummy-virt (DT) [ 16.744551] Call trace: [ 16.744578] show_stack+0x20/0x38 (C) [ 16.744631] dump_stack_lvl+0x8c/0xd0 [ 16.744685] print_report+0x118/0x5d0 [ 16.744732] kasan_report+0xdc/0x128 [ 16.744778] __kasan_check_byte+0x54/0x70 [ 16.744825] kmem_cache_destroy+0x34/0x218 [ 16.744875] kmem_cache_double_destroy+0x174/0x300 [ 16.744931] kunit_try_run_case+0x170/0x3f0 [ 16.744982] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.745034] kthread+0x328/0x630 [ 16.745079] ret_from_fork+0x10/0x20 [ 16.745128] [ 16.745147] Allocated by task 215: [ 16.745180] kasan_save_stack+0x3c/0x68 [ 16.745221] kasan_save_track+0x20/0x40 [ 16.745258] kasan_save_alloc_info+0x40/0x58 [ 16.745299] __kasan_slab_alloc+0xa8/0xb0 [ 16.745548] kmem_cache_alloc_noprof+0x10c/0x398 [ 16.745594] __kmem_cache_create_args+0x178/0x280 [ 16.745635] kmem_cache_double_destroy+0xc0/0x300 [ 16.745676] kunit_try_run_case+0x170/0x3f0 [ 16.745714] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.745758] kthread+0x328/0x630 [ 16.745792] ret_from_fork+0x10/0x20 [ 16.745829] [ 16.745850] Freed by task 215: [ 16.745879] kasan_save_stack+0x3c/0x68 [ 16.745918] kasan_save_track+0x20/0x40 [ 16.745954] kasan_save_free_info+0x4c/0x78 [ 16.745994] __kasan_slab_free+0x6c/0x98 [ 16.746033] kmem_cache_free+0x260/0x468 [ 16.746071] slab_kmem_cache_release+0x38/0x50 [ 16.746110] kmem_cache_release+0x1c/0x30 [ 16.746147] kobject_put+0x17c/0x420 [ 16.746184] sysfs_slab_release+0x1c/0x30 [ 16.746223] kmem_cache_destroy+0x118/0x218 [ 16.746261] kmem_cache_double_destroy+0x128/0x300 [ 16.746301] kunit_try_run_case+0x170/0x3f0 [ 16.746354] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.746399] kthread+0x328/0x630 [ 16.746431] ret_from_fork+0x10/0x20 [ 16.746468] [ 16.746489] The buggy address belongs to the object at fff00000c5a56000 [ 16.746489] which belongs to the cache kmem_cache of size 208 [ 16.746548] The buggy address is located 0 bytes inside of [ 16.746548] freed 208-byte region [fff00000c5a56000, fff00000c5a560d0) [ 16.746609] [ 16.746631] The buggy address belongs to the physical page: [ 16.746666] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105a56 [ 16.746722] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.746776] page_type: f5(slab) [ 16.746818] raw: 0bfffe0000000000 fff00000c0001000 dead000000000122 0000000000000000 [ 16.746869] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 16.746910] page dumped because: kasan: bad access detected [ 16.746941] [ 16.746961] Memory state around the buggy address: [ 16.746994] fff00000c5a55f00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.747037] fff00000c5a55f80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 16.747079] >fff00000c5a56000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 16.747117] ^ [ 16.747145] fff00000c5a56080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 16.747187] fff00000c5a56100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.747226] ==================================================================
[ 13.007968] ================================================================== [ 13.008517] BUG: KASAN: slab-use-after-free in kmem_cache_double_destroy+0x1bf/0x380 [ 13.008888] Read of size 1 at addr ffff888100a743c0 by task kunit_try_catch/234 [ 13.009231] [ 13.009329] CPU: 0 UID: 0 PID: 234 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 13.009373] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.009385] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.009405] Call Trace: [ 13.009417] <TASK> [ 13.009432] dump_stack_lvl+0x73/0xb0 [ 13.009462] print_report+0xd1/0x610 [ 13.009484] ? __virt_addr_valid+0x1db/0x2d0 [ 13.009509] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.009533] ? kasan_complete_mode_report_info+0x64/0x200 [ 13.009587] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.009614] kasan_report+0x141/0x180 [ 13.009652] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.009691] ? kmem_cache_double_destroy+0x1bf/0x380 [ 13.009716] __kasan_check_byte+0x3d/0x50 [ 13.009738] kmem_cache_destroy+0x25/0x1d0 [ 13.009761] kmem_cache_double_destroy+0x1bf/0x380 [ 13.009786] ? __pfx_kmem_cache_double_destroy+0x10/0x10 [ 13.009810] ? finish_task_switch.isra.0+0x153/0x700 [ 13.009833] ? __switch_to+0x47/0xf50 [ 13.009860] ? __pfx_read_tsc+0x10/0x10 [ 13.009882] ? ktime_get_ts64+0x86/0x230 [ 13.009933] kunit_try_run_case+0x1a5/0x480 [ 13.009959] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.009982] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.010017] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.010041] ? __kthread_parkme+0x82/0x180 [ 13.010062] ? preempt_count_sub+0x50/0x80 [ 13.010110] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.010134] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.010158] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.010192] kthread+0x337/0x6f0 [ 13.010211] ? trace_preempt_on+0x20/0xc0 [ 13.010234] ? __pfx_kthread+0x10/0x10 [ 13.010253] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.010301] ? calculate_sigpending+0x7b/0xa0 [ 13.010327] ? __pfx_kthread+0x10/0x10 [ 13.010348] ret_from_fork+0x116/0x1d0 [ 13.010367] ? __pfx_kthread+0x10/0x10 [ 13.010386] ret_from_fork_asm+0x1a/0x30 [ 13.010416] </TASK> [ 13.010426] [ 13.019018] Allocated by task 234: [ 13.019314] kasan_save_stack+0x45/0x70 [ 13.019516] kasan_save_track+0x18/0x40 [ 13.019748] kasan_save_alloc_info+0x3b/0x50 [ 13.020038] __kasan_slab_alloc+0x91/0xa0 [ 13.020380] kmem_cache_alloc_noprof+0x123/0x3f0 [ 13.020540] __kmem_cache_create_args+0x169/0x240 [ 13.020768] kmem_cache_double_destroy+0xd5/0x380 [ 13.021035] kunit_try_run_case+0x1a5/0x480 [ 13.021242] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.021422] kthread+0x337/0x6f0 [ 13.021627] ret_from_fork+0x116/0x1d0 [ 13.021820] ret_from_fork_asm+0x1a/0x30 [ 13.022174] [ 13.022299] Freed by task 234: [ 13.022437] kasan_save_stack+0x45/0x70 [ 13.022660] kasan_save_track+0x18/0x40 [ 13.022879] kasan_save_free_info+0x3f/0x60 [ 13.023134] __kasan_slab_free+0x56/0x70 [ 13.023366] kmem_cache_free+0x249/0x420 [ 13.023643] slab_kmem_cache_release+0x2e/0x40 [ 13.023868] kmem_cache_release+0x16/0x20 [ 13.024049] kobject_put+0x181/0x450 [ 13.024275] sysfs_slab_release+0x16/0x20 [ 13.024510] kmem_cache_destroy+0xf0/0x1d0 [ 13.024726] kmem_cache_double_destroy+0x14e/0x380 [ 13.024979] kunit_try_run_case+0x1a5/0x480 [ 13.025206] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.025479] kthread+0x337/0x6f0 [ 13.025625] ret_from_fork+0x116/0x1d0 [ 13.025933] ret_from_fork_asm+0x1a/0x30 [ 13.026176] [ 13.026262] The buggy address belongs to the object at ffff888100a743c0 [ 13.026262] which belongs to the cache kmem_cache of size 208 [ 13.026870] The buggy address is located 0 bytes inside of [ 13.026870] freed 208-byte region [ffff888100a743c0, ffff888100a74490) [ 13.027490] [ 13.027639] The buggy address belongs to the physical page: [ 13.027985] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100a74 [ 13.028360] flags: 0x200000000000000(node=0|zone=2) [ 13.028643] page_type: f5(slab) [ 13.028830] raw: 0200000000000000 ffff888100041000 dead000000000122 0000000000000000 [ 13.029169] raw: 0000000000000000 00000000800c000c 00000000f5000000 0000000000000000 [ 13.029539] page dumped because: kasan: bad access detected [ 13.029880] [ 13.030091] Memory state around the buggy address: [ 13.030357] ffff888100a74280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.030566] ffff888100a74300: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 13.030773] >ffff888100a74380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 13.030978] ^ [ 13.031139] ffff888100a74400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 13.031530] ffff888100a74480: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.031835] ==================================================================