Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.329849] ================================================================== [ 16.330014] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 16.330130] Read of size 1 at addr fff00000c78dc000 by task kunit_try_catch/148 [ 16.330471] [ 16.330540] CPU: 1 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 16.330839] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.330925] Hardware name: linux,dummy-virt (DT) [ 16.331126] Call trace: [ 16.331180] show_stack+0x20/0x38 (C) [ 16.331537] dump_stack_lvl+0x8c/0xd0 [ 16.332067] print_report+0x118/0x608 [ 16.332339] kasan_report+0xdc/0x128 [ 16.332486] __asan_report_load1_noabort+0x20/0x30 [ 16.332591] kmalloc_large_uaf+0x2cc/0x2f8 [ 16.332697] kunit_try_run_case+0x170/0x3f0 [ 16.333177] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.333402] kthread+0x328/0x630 [ 16.333581] ret_from_fork+0x10/0x20 [ 16.333689] [ 16.333902] The buggy address belongs to the physical page: [ 16.333965] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078dc [ 16.334090] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.334508] raw: 0bfffe0000000000 ffffc1ffc31e3808 fff00000da47cc00 0000000000000000 [ 16.334817] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 16.334913] page dumped because: kasan: bad access detected [ 16.334977] [ 16.335017] Memory state around the buggy address: [ 16.335106] fff00000c78dbf00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.335354] fff00000c78dbf80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.335477] >fff00000c78dc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.335558] ^ [ 16.335622] fff00000c78dc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.336091] fff00000c78dc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.336186] ==================================================================
[ 15.908317] ================================================================== [ 15.909124] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 15.909454] Read of size 1 at addr ffff888102990000 by task kunit_try_catch/165 [ 15.911471] [ 15.911692] CPU: 1 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 15.911788] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.911808] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.911844] Call Trace: [ 15.911867] <TASK> [ 15.911899] dump_stack_lvl+0x73/0xb0 [ 15.911959] print_report+0xd1/0x650 [ 15.911997] ? __virt_addr_valid+0x1db/0x2d0 [ 15.912036] ? kmalloc_large_uaf+0x2f1/0x340 [ 15.912072] ? kasan_addr_to_slab+0x11/0xa0 [ 15.912106] ? kmalloc_large_uaf+0x2f1/0x340 [ 15.912141] kasan_report+0x141/0x180 [ 15.912176] ? kmalloc_large_uaf+0x2f1/0x340 [ 15.912223] __asan_report_load1_noabort+0x18/0x20 [ 15.912381] kmalloc_large_uaf+0x2f1/0x340 [ 15.912433] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 15.912476] ? __schedule+0x10cc/0x2b60 [ 15.912523] ? __pfx_read_tsc+0x10/0x10 [ 15.912567] ? ktime_get_ts64+0x86/0x230 [ 15.912618] kunit_try_run_case+0x1a5/0x480 [ 15.912679] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.912881] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.912934] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.912976] ? __kthread_parkme+0x82/0x180 [ 15.913013] ? preempt_count_sub+0x50/0x80 [ 15.913051] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.913093] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.913173] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.913220] kthread+0x337/0x6f0 [ 15.913299] ? trace_preempt_on+0x20/0xc0 [ 15.913349] ? __pfx_kthread+0x10/0x10 [ 15.913387] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.913422] ? calculate_sigpending+0x7b/0xa0 [ 15.913465] ? __pfx_kthread+0x10/0x10 [ 15.913506] ret_from_fork+0x116/0x1d0 [ 15.913547] ? __pfx_kthread+0x10/0x10 [ 15.913584] ret_from_fork_asm+0x1a/0x30 [ 15.913628] </TASK> [ 15.913644] [ 15.924782] The buggy address belongs to the physical page: [ 15.925096] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102990 [ 15.925527] flags: 0x200000000000000(node=0|zone=2) [ 15.925827] raw: 0200000000000000 ffffea00040a6508 ffff88815b139f80 0000000000000000 [ 15.926232] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 15.926802] page dumped because: kasan: bad access detected [ 15.927239] [ 15.927414] Memory state around the buggy address: [ 15.927808] ffff88810298ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.928153] ffff88810298ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.928481] >ffff888102990000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.928769] ^ [ 15.929038] ffff888102990080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.929535] ffff888102990100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.930074] ==================================================================