Date
July 1, 2025, 3:08 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.764951] ================================================================== [ 16.765452] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 16.765643] Read of size 1 at addr fff00000c692c000 by task kunit_try_catch/149 [ 16.765712] [ 16.765755] CPU: 1 UID: 0 PID: 149 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 16.765872] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.765902] Hardware name: linux,dummy-virt (DT) [ 16.765934] Call trace: [ 16.765956] show_stack+0x20/0x38 (C) [ 16.766008] dump_stack_lvl+0x8c/0xd0 [ 16.766057] print_report+0x118/0x608 [ 16.766102] kasan_report+0xdc/0x128 [ 16.766145] __asan_report_load1_noabort+0x20/0x30 [ 16.766195] kmalloc_large_uaf+0x2cc/0x2f8 [ 16.766240] kunit_try_run_case+0x170/0x3f0 [ 16.766288] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.766340] kthread+0x328/0x630 [ 16.766382] ret_from_fork+0x10/0x20 [ 16.766429] [ 16.766450] The buggy address belongs to the physical page: [ 16.766482] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10692c [ 16.766536] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.766618] raw: 0bfffe0000000000 ffffc1ffc31a4c08 fff00000da478c40 0000000000000000 [ 16.766695] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 16.766736] page dumped because: kasan: bad access detected [ 16.766767] [ 16.766785] Memory state around the buggy address: [ 16.766818] fff00000c692bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.766929] fff00000c692bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 16.767108] >fff00000c692c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.767159] ^ [ 16.767290] fff00000c692c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.767447] fff00000c692c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.767485] ==================================================================
[ 11.043874] ================================================================== [ 11.044413] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.044733] Read of size 1 at addr ffff888102914000 by task kunit_try_catch/165 [ 11.045065] [ 11.045269] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.045318] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.045330] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.045351] Call Trace: [ 11.045364] <TASK> [ 11.045382] dump_stack_lvl+0x73/0xb0 [ 11.045411] print_report+0xd1/0x650 [ 11.045444] ? __virt_addr_valid+0x1db/0x2d0 [ 11.045468] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.045487] ? kasan_addr_to_slab+0x11/0xa0 [ 11.045517] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.045537] kasan_report+0x141/0x180 [ 11.045558] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.045583] __asan_report_load1_noabort+0x18/0x20 [ 11.045605] kmalloc_large_uaf+0x2f1/0x340 [ 11.045625] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.045645] ? __schedule+0x10cc/0x2b60 [ 11.045666] ? __pfx_read_tsc+0x10/0x10 [ 11.045687] ? ktime_get_ts64+0x86/0x230 [ 11.045710] kunit_try_run_case+0x1a5/0x480 [ 11.045735] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.045817] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.045845] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.045866] ? __kthread_parkme+0x82/0x180 [ 11.045899] ? preempt_count_sub+0x50/0x80 [ 11.045922] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.045944] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.045966] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.045988] kthread+0x337/0x6f0 [ 11.046006] ? trace_preempt_on+0x20/0xc0 [ 11.046038] ? __pfx_kthread+0x10/0x10 [ 11.046058] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.046077] ? calculate_sigpending+0x7b/0xa0 [ 11.046099] ? __pfx_kthread+0x10/0x10 [ 11.046119] ret_from_fork+0x116/0x1d0 [ 11.046137] ? __pfx_kthread+0x10/0x10 [ 11.046156] ret_from_fork_asm+0x1a/0x30 [ 11.046186] </TASK> [ 11.046197] [ 11.056153] The buggy address belongs to the physical page: [ 11.056438] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102914 [ 11.057161] flags: 0x200000000000000(node=0|zone=2) [ 11.057413] raw: 0200000000000000 ffffea00040a4608 ffff88815b039f80 0000000000000000 [ 11.057785] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.058104] page dumped because: kasan: bad access detected [ 11.058315] [ 11.058409] Memory state around the buggy address: [ 11.058607] ffff888102913f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.058977] ffff888102913f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.059245] >ffff888102914000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.059548] ^ [ 11.059689] ffff888102914080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.060011] ffff888102914100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.060480] ==================================================================