Date
July 12, 2025, 11:09 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.491027] ================================================================== [ 16.491547] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 16.491664] Read of size 1 at addr fff00000c6654000 by task kunit_try_catch/148 [ 16.491714] [ 16.491747] CPU: 1 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT [ 16.492030] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.492076] Hardware name: linux,dummy-virt (DT) [ 16.492106] Call trace: [ 16.492133] show_stack+0x20/0x38 (C) [ 16.492437] dump_stack_lvl+0x8c/0xd0 [ 16.492584] print_report+0x118/0x5d0 [ 16.492862] kasan_report+0xdc/0x128 [ 16.492911] __asan_report_load1_noabort+0x20/0x30 [ 16.493329] kmalloc_large_uaf+0x2cc/0x2f8 [ 16.493376] kunit_try_run_case+0x170/0x3f0 [ 16.493421] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.493472] kthread+0x328/0x630 [ 16.493518] ret_from_fork+0x10/0x20 [ 16.494195] [ 16.494238] The buggy address belongs to the physical page: [ 16.494270] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106654 [ 16.494339] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.494667] raw: 0bfffe0000000000 ffffc1ffc3199608 fff00000da478c40 0000000000000000 [ 16.494728] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 16.494997] page dumped because: kasan: bad access detected [ 16.495032] [ 16.495050] Memory state around the buggy address: [ 16.495548] fff00000c6653f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.495668] fff00000c6653f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.495787] >fff00000c6654000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.495825] ^ [ 16.495853] fff00000c6654080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.496283] fff00000c6654100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.496334] ==================================================================
[ 12.440097] ================================================================== [ 12.440898] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 12.441720] Read of size 1 at addr ffff88810272c000 by task kunit_try_catch/165 [ 12.442431] [ 12.442569] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5 #1 PREEMPT(voluntary) [ 12.442614] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.442625] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.442646] Call Trace: [ 12.442657] <TASK> [ 12.442673] dump_stack_lvl+0x73/0xb0 [ 12.442713] print_report+0xd1/0x610 [ 12.442739] ? __virt_addr_valid+0x1db/0x2d0 [ 12.442764] ? kmalloc_large_uaf+0x2f1/0x340 [ 12.442784] ? kasan_addr_to_slab+0x11/0xa0 [ 12.442804] ? kmalloc_large_uaf+0x2f1/0x340 [ 12.442825] kasan_report+0x141/0x180 [ 12.442847] ? kmalloc_large_uaf+0x2f1/0x340 [ 12.442872] __asan_report_load1_noabort+0x18/0x20 [ 12.442896] kmalloc_large_uaf+0x2f1/0x340 [ 12.442917] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 12.442939] ? __schedule+0x10cc/0x2b60 [ 12.442960] ? __pfx_read_tsc+0x10/0x10 [ 12.443062] ? ktime_get_ts64+0x86/0x230 [ 12.443087] kunit_try_run_case+0x1a5/0x480 [ 12.443113] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.443136] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.443159] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.443183] ? __kthread_parkme+0x82/0x180 [ 12.443204] ? preempt_count_sub+0x50/0x80 [ 12.443228] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.443252] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.443287] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.443312] kthread+0x337/0x6f0 [ 12.443331] ? trace_preempt_on+0x20/0xc0 [ 12.443354] ? __pfx_kthread+0x10/0x10 [ 12.443375] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.443396] ? calculate_sigpending+0x7b/0xa0 [ 12.443421] ? __pfx_kthread+0x10/0x10 [ 12.443442] ret_from_fork+0x116/0x1d0 [ 12.443459] ? __pfx_kthread+0x10/0x10 [ 12.443480] ret_from_fork_asm+0x1a/0x30 [ 12.443510] </TASK> [ 12.443520] [ 12.452911] The buggy address belongs to the physical page: [ 12.453220] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10272c [ 12.453474] flags: 0x200000000000000(node=0|zone=2) [ 12.453706] raw: 0200000000000000 ffff88815b039f80 ffff88815b039f80 0000000000000000 [ 12.454052] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 12.454405] page dumped because: kasan: bad access detected [ 12.454627] [ 12.454694] Memory state around the buggy address: [ 12.454854] ffff88810272bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.455150] ffff88810272bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.455540] >ffff88810272c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.455800] ^ [ 12.455918] ffff88810272c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.456478] ffff88810272c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.456941] ==================================================================