Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.096582] ================================================================== [ 23.097545] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 23.098495] Write of size 33 at addr fff00000c637c080 by task kunit_try_catch/175 [ 23.099141] [ 23.099506] CPU: 0 UID: 0 PID: 175 Comm: kunit_try_catch Tainted: G B N 6.14.11-rc1 #1 [ 23.099730] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.099811] Hardware name: linux,dummy-virt (DT) [ 23.099915] Call trace: [ 23.099982] show_stack+0x20/0x38 (C) [ 23.100124] dump_stack_lvl+0x8c/0xd0 [ 23.100266] print_report+0x118/0x608 [ 23.100403] kasan_report+0xdc/0x128 [ 23.100542] kasan_check_range+0x100/0x1a8 [ 23.100677] __asan_memset+0x34/0x78 [ 23.100807] kmalloc_uaf_memset+0x170/0x310 [ 23.100949] kunit_try_run_case+0x170/0x3f0 [ 23.101119] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.101275] kthread+0x318/0x620 [ 23.101341] ret_from_fork+0x10/0x20 [ 23.101403] [ 23.109048] Allocated by task 175: [ 23.109525] kasan_save_stack+0x3c/0x68 [ 23.110058] kasan_save_track+0x20/0x40 [ 23.110544] kasan_save_alloc_info+0x40/0x58 [ 23.111044] __kasan_kmalloc+0xd4/0xd8 [ 23.111613] __kmalloc_cache_noprof+0x16c/0x3c0 [ 23.112090] kmalloc_uaf_memset+0xb8/0x310 [ 23.112631] kunit_try_run_case+0x170/0x3f0 [ 23.114004] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.114606] kthread+0x318/0x620 [ 23.115095] ret_from_fork+0x10/0x20 [ 23.115550] [ 23.115850] Freed by task 175: [ 23.116925] kasan_save_stack+0x3c/0x68 [ 23.117897] kasan_save_track+0x20/0x40 [ 23.118756] kasan_save_free_info+0x4c/0x78 [ 23.119250] __kasan_slab_free+0x6c/0x98 [ 23.119675] kfree+0x214/0x3c8 [ 23.120048] kmalloc_uaf_memset+0x11c/0x310 [ 23.120503] kunit_try_run_case+0x170/0x3f0 [ 23.121042] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.122058] kthread+0x318/0x620 [ 23.122501] ret_from_fork+0x10/0x20 [ 23.122918] [ 23.123155] The buggy address belongs to the object at fff00000c637c080 [ 23.123155] which belongs to the cache kmalloc-64 of size 64 [ 23.125132] The buggy address is located 0 bytes inside of [ 23.125132] freed 64-byte region [fff00000c637c080, fff00000c637c0c0) [ 23.127053] [ 23.127376] The buggy address belongs to the physical page: [ 23.127807] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10637c [ 23.128533] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.129438] page_type: f5(slab) [ 23.131038] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 23.131912] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 23.132825] page dumped because: kasan: bad access detected [ 23.133575] [ 23.133789] Memory state around the buggy address: [ 23.134207] fff00000c637bf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.134726] fff00000c637c000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.135286] >fff00000c637c080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.135787] ^ [ 23.136762] fff00000c637c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.138533] fff00000c637c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.139374] ==================================================================
[ 17.980964] ================================================================== [ 17.981577] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a4/0x360 [ 17.982266] Write of size 33 at addr ffff888102ca9380 by task kunit_try_catch/194 [ 17.982826] [ 17.983060] CPU: 0 UID: 0 PID: 194 Comm: kunit_try_catch Tainted: G B N 6.14.11-rc1 #1 [ 17.983193] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.983223] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 17.983268] Call Trace: [ 17.983301] <TASK> [ 17.983338] dump_stack_lvl+0x73/0xb0 [ 17.983438] print_report+0xd1/0x650 [ 17.983494] ? __virt_addr_valid+0x1db/0x2d0 [ 17.983549] ? kmalloc_uaf_memset+0x1a4/0x360 [ 17.983597] ? kasan_complete_mode_report_info+0x64/0x200 [ 17.983657] ? kmalloc_uaf_memset+0x1a4/0x360 [ 17.983723] kasan_report+0x140/0x180 [ 17.983779] ? kmalloc_uaf_memset+0x1a4/0x360 [ 17.983842] kasan_check_range+0x10c/0x1c0 [ 17.983911] __asan_memset+0x27/0x50 [ 17.983966] kmalloc_uaf_memset+0x1a4/0x360 [ 17.984044] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 17.984103] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 17.984161] kunit_try_run_case+0x1a6/0x480 [ 17.984222] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.984303] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 17.984362] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 17.984421] ? __kthread_parkme+0x82/0x160 [ 17.984482] ? preempt_count_sub+0x50/0x80 [ 17.984539] ? __pfx_kunit_try_run_case+0x10/0x10 [ 17.984589] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 17.984627] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 17.984660] kthread+0x324/0x6e0 [ 17.984688] ? trace_preempt_on+0x20/0xc0 [ 17.984718] ? __pfx_kthread+0x10/0x10 [ 17.984745] ? _raw_spin_unlock_irq+0x47/0x80 [ 17.984773] ? calculate_sigpending+0x7b/0xa0 [ 17.984801] ? __pfx_kthread+0x10/0x10 [ 17.984829] ret_from_fork+0x41/0x80 [ 17.984853] ? __pfx_kthread+0x10/0x10 [ 17.984905] ret_from_fork_asm+0x1a/0x30 [ 17.984945] </TASK> [ 17.984959] [ 17.999731] Allocated by task 194: [ 18.000157] kasan_save_stack+0x45/0x70 [ 18.000889] kasan_save_track+0x18/0x40 [ 18.001323] kasan_save_alloc_info+0x3b/0x50 [ 18.001807] __kasan_kmalloc+0xb7/0xc0 [ 18.002265] __kmalloc_cache_noprof+0x18a/0x420 [ 18.002800] kmalloc_uaf_memset+0xaa/0x360 [ 18.003235] kunit_try_run_case+0x1a6/0x480 [ 18.003534] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.004250] kthread+0x324/0x6e0 [ 18.004653] ret_from_fork+0x41/0x80 [ 18.005201] ret_from_fork_asm+0x1a/0x30 [ 18.005677] [ 18.005816] Freed by task 194: [ 18.006763] kasan_save_stack+0x45/0x70 [ 18.007079] kasan_save_track+0x18/0x40 [ 18.007317] kasan_save_free_info+0x3f/0x60 [ 18.007894] __kasan_slab_free+0x56/0x70 [ 18.008295] kfree+0x224/0x3f0 [ 18.009134] kmalloc_uaf_memset+0x12c/0x360 [ 18.009446] kunit_try_run_case+0x1a6/0x480 [ 18.010035] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 18.010420] kthread+0x324/0x6e0 [ 18.010958] ret_from_fork+0x41/0x80 [ 18.011332] ret_from_fork_asm+0x1a/0x30 [ 18.011473] [ 18.011545] The buggy address belongs to the object at ffff888102ca9380 [ 18.011545] which belongs to the cache kmalloc-64 of size 64 [ 18.011818] The buggy address is located 0 bytes inside of [ 18.011818] freed 64-byte region [ffff888102ca9380, ffff888102ca93c0) [ 18.012267] [ 18.012954] The buggy address belongs to the physical page: [ 18.013594] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ca9 [ 18.014255] flags: 0x200000000000000(node=0|zone=2) [ 18.014900] page_type: f5(slab) [ 18.015298] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 18.016009] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 18.016796] page dumped because: kasan: bad access detected [ 18.017208] [ 18.017378] Memory state around the buggy address: [ 18.018105] ffff888102ca9280: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc [ 18.018702] ffff888102ca9300: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.019368] >ffff888102ca9380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 18.019975] ^ [ 18.020314] ffff888102ca9400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.020875] ffff888102ca9480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.021783] ==================================================================