Date
July 15, 2025, 11:09 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.696307] ================================================================== [ 15.696421] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 15.696945] Write of size 33 at addr fff00000c594b000 by task kunit_try_catch/187 [ 15.697228] [ 15.697271] CPU: 1 UID: 0 PID: 187 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.697356] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.697382] Hardware name: linux,dummy-virt (DT) [ 15.697414] Call trace: [ 15.697436] show_stack+0x20/0x38 (C) [ 15.697879] dump_stack_lvl+0x8c/0xd0 [ 15.697989] print_report+0x118/0x5d0 [ 15.698064] kasan_report+0xdc/0x128 [ 15.698239] kasan_check_range+0x100/0x1a8 [ 15.698453] __asan_memset+0x34/0x78 [ 15.698698] kmalloc_uaf_memset+0x170/0x310 [ 15.698749] kunit_try_run_case+0x170/0x3f0 [ 15.698799] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.699283] kthread+0x328/0x630 [ 15.699377] ret_from_fork+0x10/0x20 [ 15.699436] [ 15.699455] Allocated by task 187: [ 15.699486] kasan_save_stack+0x3c/0x68 [ 15.699526] kasan_save_track+0x20/0x40 [ 15.699564] kasan_save_alloc_info+0x40/0x58 [ 15.699603] __kasan_kmalloc+0xd4/0xd8 [ 15.699639] __kmalloc_cache_noprof+0x16c/0x3c0 [ 15.700168] kmalloc_uaf_memset+0xb8/0x310 [ 15.700234] kunit_try_run_case+0x170/0x3f0 [ 15.700710] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.700768] kthread+0x328/0x630 [ 15.700800] ret_from_fork+0x10/0x20 [ 15.700956] [ 15.701220] Freed by task 187: [ 15.701252] kasan_save_stack+0x3c/0x68 [ 15.701862] kasan_save_track+0x20/0x40 [ 15.702204] kasan_save_free_info+0x4c/0x78 [ 15.702298] __kasan_slab_free+0x6c/0x98 [ 15.702526] kfree+0x214/0x3c8 [ 15.702560] kmalloc_uaf_memset+0x11c/0x310 [ 15.702597] kunit_try_run_case+0x170/0x3f0 [ 15.702635] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.702677] kthread+0x328/0x630 [ 15.702710] ret_from_fork+0x10/0x20 [ 15.702744] [ 15.702764] The buggy address belongs to the object at fff00000c594b000 [ 15.702764] which belongs to the cache kmalloc-64 of size 64 [ 15.704400] The buggy address is located 0 bytes inside of [ 15.704400] freed 64-byte region [fff00000c594b000, fff00000c594b040) [ 15.704581] [ 15.704603] The buggy address belongs to the physical page: [ 15.704636] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10594b [ 15.704694] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.704746] page_type: f5(slab) [ 15.704785] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 15.704835] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 15.704878] page dumped because: kasan: bad access detected [ 15.704909] [ 15.704928] Memory state around the buggy address: [ 15.706449] fff00000c594af00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.707029] fff00000c594af80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.707377] >fff00000c594b000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 15.707850] ^ [ 15.708338] fff00000c594b080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.708417] fff00000c594b100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.708464] ==================================================================
[ 12.809989] ================================================================== [ 12.810439] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 12.810746] Write of size 33 at addr ffff8881032c8780 by task kunit_try_catch/203 [ 12.811087] [ 12.811185] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 12.811229] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.811240] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.811261] Call Trace: [ 12.811272] <TASK> [ 12.811288] dump_stack_lvl+0x73/0xb0 [ 12.811317] print_report+0xd1/0x610 [ 12.811338] ? __virt_addr_valid+0x1db/0x2d0 [ 12.811359] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.811379] ? kasan_complete_mode_report_info+0x64/0x200 [ 12.811400] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.811421] kasan_report+0x141/0x180 [ 12.811441] ? kmalloc_uaf_memset+0x1a3/0x360 [ 12.811466] kasan_check_range+0x10c/0x1c0 [ 12.811488] __asan_memset+0x27/0x50 [ 12.811946] kmalloc_uaf_memset+0x1a3/0x360 [ 12.811979] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 12.812003] ? __schedule+0x10cc/0x2b60 [ 12.812026] ? __pfx_read_tsc+0x10/0x10 [ 12.812047] ? ktime_get_ts64+0x86/0x230 [ 12.812072] kunit_try_run_case+0x1a5/0x480 [ 12.812097] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.812120] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.812144] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.812168] ? __kthread_parkme+0x82/0x180 [ 12.812188] ? preempt_count_sub+0x50/0x80 [ 12.812212] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.812236] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.812261] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.812286] kthread+0x337/0x6f0 [ 12.812305] ? trace_preempt_on+0x20/0xc0 [ 12.812397] ? __pfx_kthread+0x10/0x10 [ 12.812420] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.812454] ? calculate_sigpending+0x7b/0xa0 [ 12.812478] ? __pfx_kthread+0x10/0x10 [ 12.812500] ret_from_fork+0x116/0x1d0 [ 12.812518] ? __pfx_kthread+0x10/0x10 [ 12.812538] ret_from_fork_asm+0x1a/0x30 [ 12.812569] </TASK> [ 12.812581] [ 12.824146] Allocated by task 203: [ 12.824630] kasan_save_stack+0x45/0x70 [ 12.825009] kasan_save_track+0x18/0x40 [ 12.825153] kasan_save_alloc_info+0x3b/0x50 [ 12.825303] __kasan_kmalloc+0xb7/0xc0 [ 12.825904] __kmalloc_cache_noprof+0x189/0x420 [ 12.826378] kmalloc_uaf_memset+0xa9/0x360 [ 12.826803] kunit_try_run_case+0x1a5/0x480 [ 12.827177] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.827521] kthread+0x337/0x6f0 [ 12.827836] ret_from_fork+0x116/0x1d0 [ 12.828129] ret_from_fork_asm+0x1a/0x30 [ 12.828270] [ 12.828459] Freed by task 203: [ 12.828764] kasan_save_stack+0x45/0x70 [ 12.829119] kasan_save_track+0x18/0x40 [ 12.829521] kasan_save_free_info+0x3f/0x60 [ 12.829677] __kasan_slab_free+0x56/0x70 [ 12.829943] kfree+0x222/0x3f0 [ 12.830236] kmalloc_uaf_memset+0x12b/0x360 [ 12.830917] kunit_try_run_case+0x1a5/0x480 [ 12.831294] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.831675] kthread+0x337/0x6f0 [ 12.831810] ret_from_fork+0x116/0x1d0 [ 12.831943] ret_from_fork_asm+0x1a/0x30 [ 12.832082] [ 12.832153] The buggy address belongs to the object at ffff8881032c8780 [ 12.832153] which belongs to the cache kmalloc-64 of size 64 [ 12.832996] The buggy address is located 0 bytes inside of [ 12.832996] freed 64-byte region [ffff8881032c8780, ffff8881032c87c0) [ 12.834082] [ 12.834243] The buggy address belongs to the physical page: [ 12.834805] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1032c8 [ 12.835671] flags: 0x200000000000000(node=0|zone=2) [ 12.836023] page_type: f5(slab) [ 12.836148] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 12.836592] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 12.837240] page dumped because: kasan: bad access detected [ 12.837812] [ 12.837983] Memory state around the buggy address: [ 12.838200] ffff8881032c8680: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.838431] ffff8881032c8700: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.838647] >ffff8881032c8780: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 12.838869] ^ [ 12.838986] ffff8881032c8800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.839199] ffff8881032c8880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.839409] ==================================================================