Date
July 18, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.134788] ================================================================== [ 15.134849] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 15.134898] Read of size 1 at addr fff00000c7750000 by task kunit_try_catch/148 [ 15.134947] [ 15.134979] CPU: 1 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.135060] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.135086] Hardware name: linux,dummy-virt (DT) [ 15.135115] Call trace: [ 15.135137] show_stack+0x20/0x38 (C) [ 15.135185] dump_stack_lvl+0x8c/0xd0 [ 15.135230] print_report+0x118/0x5d0 [ 15.135276] kasan_report+0xdc/0x128 [ 15.135321] __asan_report_load1_noabort+0x20/0x30 [ 15.135388] kmalloc_large_uaf+0x2cc/0x2f8 [ 15.135432] kunit_try_run_case+0x170/0x3f0 [ 15.135479] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.135530] kthread+0x328/0x630 [ 15.135574] ret_from_fork+0x10/0x20 [ 15.135621] [ 15.135640] The buggy address belongs to the physical page: [ 15.135671] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107750 [ 15.135721] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.135781] raw: 0bfffe0000000000 ffffc1ffc31dd508 fff00000da478c40 0000000000000000 [ 15.135829] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 15.135867] page dumped because: kasan: bad access detected [ 15.135897] [ 15.135915] Memory state around the buggy address: [ 15.135946] fff00000c774ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.135987] fff00000c774ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.136028] >fff00000c7750000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.136064] ^ [ 15.136091] fff00000c7750080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.136131] fff00000c7750100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.136168] ==================================================================
[ 11.604714] ================================================================== [ 11.605723] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.606074] Read of size 1 at addr ffff8881028a4000 by task kunit_try_catch/167 [ 11.606334] [ 11.606783] CPU: 0 UID: 0 PID: 167 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.606830] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.606841] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.606861] Call Trace: [ 11.606872] <TASK> [ 11.606887] dump_stack_lvl+0x73/0xb0 [ 11.606915] print_report+0xd1/0x610 [ 11.607028] ? __virt_addr_valid+0x1db/0x2d0 [ 11.607051] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.607071] ? kasan_addr_to_slab+0x11/0xa0 [ 11.607205] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.607230] kasan_report+0x141/0x180 [ 11.607252] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.607289] __asan_report_load1_noabort+0x18/0x20 [ 11.607313] kmalloc_large_uaf+0x2f1/0x340 [ 11.607334] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.607355] ? __schedule+0x10cc/0x2b60 [ 11.607377] ? __pfx_read_tsc+0x10/0x10 [ 11.607398] ? ktime_get_ts64+0x86/0x230 [ 11.607420] kunit_try_run_case+0x1a5/0x480 [ 11.607443] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.607465] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.607488] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.607511] ? __kthread_parkme+0x82/0x180 [ 11.607530] ? preempt_count_sub+0x50/0x80 [ 11.607553] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.607576] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.607599] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.607622] kthread+0x337/0x6f0 [ 11.607641] ? trace_preempt_on+0x20/0xc0 [ 11.607663] ? __pfx_kthread+0x10/0x10 [ 11.607682] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.607703] ? calculate_sigpending+0x7b/0xa0 [ 11.607726] ? __pfx_kthread+0x10/0x10 [ 11.607746] ret_from_fork+0x116/0x1d0 [ 11.607764] ? __pfx_kthread+0x10/0x10 [ 11.607783] ret_from_fork_asm+0x1a/0x30 [ 11.607813] </TASK> [ 11.607822] [ 11.622923] The buggy address belongs to the physical page: [ 11.623180] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1028a4 [ 11.624514] flags: 0x200000000000000(node=0|zone=2) [ 11.625350] raw: 0200000000000000 ffffea00040a2a08 ffff88815b039f80 0000000000000000 [ 11.626280] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.626778] page dumped because: kasan: bad access detected [ 11.627441] [ 11.627518] Memory state around the buggy address: [ 11.627677] ffff8881028a3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.627895] ffff8881028a3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.628707] >ffff8881028a4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.629686] ^ [ 11.629994] ffff8881028a4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.631102] ffff8881028a4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.631868] ==================================================================