Date
June 19, 2025, 12:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 30.741391] ================================================================== [ 30.741891] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 30.742199] Write of size 33 at addr fff00000c7738380 by task kunit_try_catch/197 [ 30.742360] [ 30.742467] CPU: 1 UID: 0 PID: 197 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250619 #1 PREEMPT [ 30.742913] Tainted: [B]=BAD_PAGE, [N]=TEST [ 30.743015] Hardware name: linux,dummy-virt (DT) [ 30.743092] Call trace: [ 30.743181] show_stack+0x20/0x38 (C) [ 30.743342] dump_stack_lvl+0x8c/0xd0 [ 30.743468] print_report+0x118/0x608 [ 30.743589] kasan_report+0xdc/0x128 [ 30.743708] kasan_check_range+0x100/0x1a8 [ 30.743829] __asan_memset+0x34/0x78 [ 30.743957] kmalloc_uaf_memset+0x170/0x310 [ 30.744080] kunit_try_run_case+0x170/0x3f0 [ 30.744202] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.744338] kthread+0x328/0x630 [ 30.744449] ret_from_fork+0x10/0x20 [ 30.744573] [ 30.744619] Allocated by task 197: [ 30.744707] kasan_save_stack+0x3c/0x68 [ 30.744847] kasan_save_track+0x20/0x40 [ 30.744941] kasan_save_alloc_info+0x40/0x58 [ 30.745035] __kasan_kmalloc+0xd4/0xd8 [ 30.745261] __kmalloc_cache_noprof+0x16c/0x3c0 [ 30.745360] kmalloc_uaf_memset+0xb8/0x310 [ 30.745451] kunit_try_run_case+0x170/0x3f0 [ 30.746118] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.746346] kthread+0x328/0x630 [ 30.746573] ret_from_fork+0x10/0x20 [ 30.746693] [ 30.747183] Freed by task 197: [ 30.747278] kasan_save_stack+0x3c/0x68 [ 30.747476] kasan_save_track+0x20/0x40 [ 30.747598] kasan_save_free_info+0x4c/0x78 [ 30.747705] __kasan_slab_free+0x6c/0x98 [ 30.747887] kfree+0x214/0x3c8 [ 30.747973] kmalloc_uaf_memset+0x11c/0x310 [ 30.748057] kunit_try_run_case+0x170/0x3f0 [ 30.748133] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 30.748212] kthread+0x328/0x630 [ 30.748280] ret_from_fork+0x10/0x20 [ 30.748363] [ 30.748426] The buggy address belongs to the object at fff00000c7738380 [ 30.748426] which belongs to the cache kmalloc-64 of size 64 [ 30.748568] The buggy address is located 0 bytes inside of [ 30.748568] freed 64-byte region [fff00000c7738380, fff00000c77383c0) [ 30.749096] [ 30.749175] The buggy address belongs to the physical page: [ 30.749289] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107738 [ 30.749460] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 30.749575] page_type: f5(slab) [ 30.749961] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 30.750102] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 30.750204] page dumped because: kasan: bad access detected [ 30.750269] [ 30.750305] Memory state around the buggy address: [ 30.750368] fff00000c7738280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.750462] fff00000c7738300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.750560] >fff00000c7738380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.750658] ^ [ 30.750737] fff00000c7738400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.750835] fff00000c7738480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.751264] ==================================================================
[ 27.253707] ================================================================== [ 27.254241] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 27.254603] Write of size 33 at addr ffff888103774080 by task kunit_try_catch/215 [ 27.255409] [ 27.255588] CPU: 1 UID: 0 PID: 215 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250619 #1 PREEMPT(voluntary) [ 27.255697] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.255725] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.255768] Call Trace: [ 27.255797] <TASK> [ 27.256161] dump_stack_lvl+0x73/0xb0 [ 27.256271] print_report+0xd1/0x650 [ 27.256327] ? __virt_addr_valid+0x1db/0x2d0 [ 27.256381] ? kmalloc_uaf_memset+0x1a3/0x360 [ 27.256430] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.256483] ? kmalloc_uaf_memset+0x1a3/0x360 [ 27.256527] kasan_report+0x141/0x180 [ 27.256575] ? kmalloc_uaf_memset+0x1a3/0x360 [ 27.256632] kasan_check_range+0x10c/0x1c0 [ 27.256674] __asan_memset+0x27/0x50 [ 27.256713] kmalloc_uaf_memset+0x1a3/0x360 [ 27.256737] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 27.256760] ? __schedule+0x10cc/0x2b60 [ 27.256785] ? __pfx_read_tsc+0x10/0x10 [ 27.256808] ? ktime_get_ts64+0x86/0x230 [ 27.256835] kunit_try_run_case+0x1a5/0x480 [ 27.256862] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.256884] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 27.256933] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.256968] ? __kthread_parkme+0x82/0x180 [ 27.256991] ? preempt_count_sub+0x50/0x80 [ 27.257018] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.257042] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.257067] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.257091] kthread+0x337/0x6f0 [ 27.257133] ? trace_preempt_on+0x20/0xc0 [ 27.257159] ? __pfx_kthread+0x10/0x10 [ 27.257181] ? _raw_spin_unlock_irq+0x47/0x80 [ 27.257204] ? calculate_sigpending+0x7b/0xa0 [ 27.257230] ? __pfx_kthread+0x10/0x10 [ 27.257253] ret_from_fork+0x116/0x1d0 [ 27.257274] ? __pfx_kthread+0x10/0x10 [ 27.257295] ret_from_fork_asm+0x1a/0x30 [ 27.257329] </TASK> [ 27.257342] [ 27.267170] Allocated by task 215: [ 27.267517] kasan_save_stack+0x45/0x70 [ 27.267827] kasan_save_track+0x18/0x40 [ 27.268245] kasan_save_alloc_info+0x3b/0x50 [ 27.268512] __kasan_kmalloc+0xb7/0xc0 [ 27.268694] __kmalloc_cache_noprof+0x189/0x420 [ 27.268878] kmalloc_uaf_memset+0xa9/0x360 [ 27.269223] kunit_try_run_case+0x1a5/0x480 [ 27.269662] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.270266] kthread+0x337/0x6f0 [ 27.270554] ret_from_fork+0x116/0x1d0 [ 27.270727] ret_from_fork_asm+0x1a/0x30 [ 27.271036] [ 27.271264] Freed by task 215: [ 27.271521] kasan_save_stack+0x45/0x70 [ 27.271706] kasan_save_track+0x18/0x40 [ 27.271880] kasan_save_free_info+0x3f/0x60 [ 27.272231] __kasan_slab_free+0x56/0x70 [ 27.272626] kfree+0x222/0x3f0 [ 27.273037] kmalloc_uaf_memset+0x12b/0x360 [ 27.273416] kunit_try_run_case+0x1a5/0x480 [ 27.273768] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.273965] kthread+0x337/0x6f0 [ 27.274141] ret_from_fork+0x116/0x1d0 [ 27.274298] ret_from_fork_asm+0x1a/0x30 [ 27.274477] [ 27.274585] The buggy address belongs to the object at ffff888103774080 [ 27.274585] which belongs to the cache kmalloc-64 of size 64 [ 27.275365] The buggy address is located 0 bytes inside of [ 27.275365] freed 64-byte region [ffff888103774080, ffff8881037740c0) [ 27.276518] [ 27.276697] The buggy address belongs to the physical page: [ 27.277196] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103774 [ 27.277865] flags: 0x200000000000000(node=0|zone=2) [ 27.278188] page_type: f5(slab) [ 27.278368] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 27.278645] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 27.278911] page dumped because: kasan: bad access detected [ 27.279160] [ 27.279272] Memory state around the buggy address: [ 27.279500] ffff888103773f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.279965] ffff888103774000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.280534] >ffff888103774080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 27.281114] ^ [ 27.281404] ffff888103774100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.282141] ffff888103774180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.282680] ==================================================================