Date
July 3, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.856655] ================================================================== [ 19.856792] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 19.856908] Write of size 33 at addr fff00000c667a080 by task kunit_try_catch/186 [ 19.858582] [ 19.858687] CPU: 0 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.858876] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.859042] Hardware name: linux,dummy-virt (DT) [ 19.859124] Call trace: [ 19.859186] show_stack+0x20/0x38 (C) [ 19.859285] dump_stack_lvl+0x8c/0xd0 [ 19.859405] print_report+0x118/0x608 [ 19.859505] kasan_report+0xdc/0x128 [ 19.860051] kasan_check_range+0x100/0x1a8 [ 19.860343] __asan_memset+0x34/0x78 [ 19.860460] kmalloc_uaf_memset+0x170/0x310 [ 19.860578] kunit_try_run_case+0x170/0x3f0 [ 19.860710] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.860845] kthread+0x328/0x630 [ 19.860954] ret_from_fork+0x10/0x20 [ 19.861089] [ 19.861137] Allocated by task 186: [ 19.861211] kasan_save_stack+0x3c/0x68 [ 19.861303] kasan_save_track+0x20/0x40 [ 19.861390] kasan_save_alloc_info+0x40/0x58 [ 19.861479] __kasan_kmalloc+0xd4/0xd8 [ 19.862035] __kmalloc_cache_noprof+0x16c/0x3c0 [ 19.862130] kmalloc_uaf_memset+0xb8/0x310 [ 19.862203] kunit_try_run_case+0x170/0x3f0 [ 19.862282] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.862367] kthread+0x328/0x630 [ 19.862430] ret_from_fork+0x10/0x20 [ 19.862509] [ 19.862601] Freed by task 186: [ 19.862681] kasan_save_stack+0x3c/0x68 [ 19.862768] kasan_save_track+0x20/0x40 [ 19.862834] kasan_save_free_info+0x4c/0x78 [ 19.862914] __kasan_slab_free+0x6c/0x98 [ 19.863000] kfree+0x214/0x3c8 [ 19.863093] kmalloc_uaf_memset+0x11c/0x310 [ 19.863180] kunit_try_run_case+0x170/0x3f0 [ 19.863263] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.863360] kthread+0x328/0x630 [ 19.863433] ret_from_fork+0x10/0x20 [ 19.863510] [ 19.863553] The buggy address belongs to the object at fff00000c667a080 [ 19.863553] which belongs to the cache kmalloc-64 of size 64 [ 19.863717] The buggy address is located 0 bytes inside of [ 19.863717] freed 64-byte region [fff00000c667a080, fff00000c667a0c0) [ 19.863865] [ 19.863910] The buggy address belongs to the physical page: [ 19.863983] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10667a [ 19.864123] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.864239] page_type: f5(slab) [ 19.864327] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 19.864447] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 19.865219] page dumped because: kasan: bad access detected [ 19.865296] [ 19.865339] Memory state around the buggy address: [ 19.865410] fff00000c6679f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.865876] fff00000c667a000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.866190] >fff00000c667a080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 19.866294] ^ [ 19.866354] fff00000c667a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.866442] fff00000c667a180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.866533] ==================================================================
[ 11.821288] ================================================================== [ 11.821701] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 11.821943] Write of size 33 at addr ffff888103184600 by task kunit_try_catch/203 [ 11.822431] [ 11.822635] CPU: 0 UID: 0 PID: 203 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.822681] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.822693] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.822714] Call Trace: [ 11.822727] <TASK> [ 11.822746] dump_stack_lvl+0x73/0xb0 [ 11.823018] print_report+0xd1/0x650 [ 11.823047] ? __virt_addr_valid+0x1db/0x2d0 [ 11.823070] ? kmalloc_uaf_memset+0x1a3/0x360 [ 11.823090] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.823111] ? kmalloc_uaf_memset+0x1a3/0x360 [ 11.823165] kasan_report+0x141/0x180 [ 11.823186] ? kmalloc_uaf_memset+0x1a3/0x360 [ 11.823211] kasan_check_range+0x10c/0x1c0 [ 11.823234] __asan_memset+0x27/0x50 [ 11.823252] kmalloc_uaf_memset+0x1a3/0x360 [ 11.823272] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 11.823372] ? __schedule+0x10cc/0x2b60 [ 11.823399] ? __pfx_read_tsc+0x10/0x10 [ 11.823419] ? ktime_get_ts64+0x86/0x230 [ 11.823443] kunit_try_run_case+0x1a5/0x480 [ 11.823468] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.823488] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.823510] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.823532] ? __kthread_parkme+0x82/0x180 [ 11.823551] ? preempt_count_sub+0x50/0x80 [ 11.823574] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.823596] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.823617] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.823639] kthread+0x337/0x6f0 [ 11.823657] ? trace_preempt_on+0x20/0xc0 [ 11.823679] ? __pfx_kthread+0x10/0x10 [ 11.823698] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.823717] ? calculate_sigpending+0x7b/0xa0 [ 11.823741] ? __pfx_kthread+0x10/0x10 [ 11.823761] ret_from_fork+0x116/0x1d0 [ 11.823778] ? __pfx_kthread+0x10/0x10 [ 11.823797] ret_from_fork_asm+0x1a/0x30 [ 11.823827] </TASK> [ 11.823838] [ 11.840047] Allocated by task 203: [ 11.840626] kasan_save_stack+0x45/0x70 [ 11.841081] kasan_save_track+0x18/0x40 [ 11.841662] kasan_save_alloc_info+0x3b/0x50 [ 11.842270] __kasan_kmalloc+0xb7/0xc0 [ 11.842776] __kmalloc_cache_noprof+0x189/0x420 [ 11.843350] kmalloc_uaf_memset+0xa9/0x360 [ 11.843607] kunit_try_run_case+0x1a5/0x480 [ 11.843755] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.843929] kthread+0x337/0x6f0 [ 11.844049] ret_from_fork+0x116/0x1d0 [ 11.844632] ret_from_fork_asm+0x1a/0x30 [ 11.845072] [ 11.845256] Freed by task 203: [ 11.845698] kasan_save_stack+0x45/0x70 [ 11.846144] kasan_save_track+0x18/0x40 [ 11.846661] kasan_save_free_info+0x3f/0x60 [ 11.847211] __kasan_slab_free+0x56/0x70 [ 11.847716] kfree+0x222/0x3f0 [ 11.848115] kmalloc_uaf_memset+0x12b/0x360 [ 11.848677] kunit_try_run_case+0x1a5/0x480 [ 11.849047] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.849282] kthread+0x337/0x6f0 [ 11.849768] ret_from_fork+0x116/0x1d0 [ 11.850226] ret_from_fork_asm+0x1a/0x30 [ 11.850758] [ 11.850924] The buggy address belongs to the object at ffff888103184600 [ 11.850924] which belongs to the cache kmalloc-64 of size 64 [ 11.851911] The buggy address is located 0 bytes inside of [ 11.851911] freed 64-byte region [ffff888103184600, ffff888103184640) [ 11.853441] [ 11.853732] The buggy address belongs to the physical page: [ 11.853914] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103184 [ 11.854228] flags: 0x200000000000000(node=0|zone=2) [ 11.854728] page_type: f5(slab) [ 11.855154] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 11.855934] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 11.856841] page dumped because: kasan: bad access detected [ 11.857345] [ 11.857649] Memory state around the buggy address: [ 11.858034] ffff888103184500: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.858485] ffff888103184580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.859136] >ffff888103184600: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 11.859776] ^ [ 11.859998] ffff888103184680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.860423] ffff888103184700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.861198] ==================================================================