Date
July 3, 2025, 11:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.309762] ================================================================== [ 19.310209] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 19.310601] Read of size 1 at addr fff00000c6564000 by task kunit_try_catch/148 [ 19.310721] [ 19.310870] CPU: 0 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 19.311082] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.311141] Hardware name: linux,dummy-virt (DT) [ 19.311208] Call trace: [ 19.311256] show_stack+0x20/0x38 (C) [ 19.311902] dump_stack_lvl+0x8c/0xd0 [ 19.312053] print_report+0x118/0x608 [ 19.312301] kasan_report+0xdc/0x128 [ 19.312819] __asan_report_load1_noabort+0x20/0x30 [ 19.312936] kmalloc_large_uaf+0x2cc/0x2f8 [ 19.313147] kunit_try_run_case+0x170/0x3f0 [ 19.313247] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.313348] kthread+0x328/0x630 [ 19.313429] ret_from_fork+0x10/0x20 [ 19.313526] [ 19.313570] The buggy address belongs to the physical page: [ 19.313626] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106564 [ 19.313737] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.313858] raw: 0bfffe0000000000 ffffc1ffc3195a08 fff00000da456c40 0000000000000000 [ 19.314057] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 19.314189] page dumped because: kasan: bad access detected [ 19.314257] [ 19.314321] Memory state around the buggy address: [ 19.314400] fff00000c6563f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.314486] fff00000c6563f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.314577] >fff00000c6564000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.314671] ^ [ 19.314842] fff00000c6564080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.314921] fff00000c6564100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.314996] ==================================================================
[ 11.020403] ================================================================== [ 11.020957] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.021479] Read of size 1 at addr ffff888102aa0000 by task kunit_try_catch/165 [ 11.021773] [ 11.021884] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.021923] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.021934] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.021953] Call Trace: [ 11.021965] <TASK> [ 11.021979] dump_stack_lvl+0x73/0xb0 [ 11.022005] print_report+0xd1/0x650 [ 11.022026] ? __virt_addr_valid+0x1db/0x2d0 [ 11.022049] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.022069] ? kasan_addr_to_slab+0x11/0xa0 [ 11.022088] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.022108] kasan_report+0x141/0x180 [ 11.022151] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.022176] __asan_report_load1_noabort+0x18/0x20 [ 11.022199] kmalloc_large_uaf+0x2f1/0x340 [ 11.022219] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.022240] ? __pfx_queued_spin_lock_slowpath+0x10/0x10 [ 11.022267] ? __pfx_read_tsc+0x10/0x10 [ 11.022289] ? ktime_get_ts64+0x86/0x230 [ 11.022312] kunit_try_run_case+0x1a5/0x480 [ 11.022336] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.022358] ? _raw_spin_lock_irqsave+0xf9/0x100 [ 11.022378] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.022399] ? __kthread_parkme+0x82/0x180 [ 11.022418] ? preempt_count_sub+0x50/0x80 [ 11.022441] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.022463] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.022484] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.022505] kthread+0x337/0x6f0 [ 11.022530] ? trace_preempt_on+0x20/0xc0 [ 11.022552] ? __pfx_kthread+0x10/0x10 [ 11.022572] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.022591] ? calculate_sigpending+0x7b/0xa0 [ 11.022613] ? __pfx_kthread+0x10/0x10 [ 11.022634] ret_from_fork+0x116/0x1d0 [ 11.022652] ? __pfx_kthread+0x10/0x10 [ 11.022672] ret_from_fork_asm+0x1a/0x30 [ 11.022701] </TASK> [ 11.022711] [ 11.029961] The buggy address belongs to the physical page: [ 11.030517] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102aa0 [ 11.030878] flags: 0x200000000000000(node=0|zone=2) [ 11.031099] raw: 0200000000000000 ffffea00040aa908 ffff88815b039f80 0000000000000000 [ 11.031508] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.031785] page dumped because: kasan: bad access detected [ 11.031959] [ 11.032055] Memory state around the buggy address: [ 11.032535] ffff888102a9ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.032811] ffff888102a9ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.033114] >ffff888102aa0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.033548] ^ [ 11.033722] ffff888102aa0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.034025] ffff888102aa0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.034253] ==================================================================