Date
July 4, 2025, 11:11 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.814496] ================================================================== [ 17.814571] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 17.815047] Read of size 1 at addr fff00000c64bc000 by task kunit_try_catch/148 [ 17.815245] [ 17.815345] CPU: 0 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 17.815522] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.815670] Hardware name: linux,dummy-virt (DT) [ 17.815731] Call trace: [ 17.815855] show_stack+0x20/0x38 (C) [ 17.815983] dump_stack_lvl+0x8c/0xd0 [ 17.816052] print_report+0x118/0x608 [ 17.816174] kasan_report+0xdc/0x128 [ 17.816225] __asan_report_load1_noabort+0x20/0x30 [ 17.816502] kmalloc_large_uaf+0x2cc/0x2f8 [ 17.816740] kunit_try_run_case+0x170/0x3f0 [ 17.816848] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.816937] kthread+0x328/0x630 [ 17.817129] ret_from_fork+0x10/0x20 [ 17.817179] [ 17.817230] The buggy address belongs to the physical page: [ 17.817262] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064bc [ 17.817314] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.817389] raw: 0bfffe0000000000 ffffc1ffc31db008 fff00000da456c40 0000000000000000 [ 17.817438] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 17.817476] page dumped because: kasan: bad access detected [ 17.817514] [ 17.817532] Memory state around the buggy address: [ 17.817581] fff00000c64bbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.817622] fff00000c64bbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.817662] >fff00000c64bc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.817697] ^ [ 17.817732] fff00000c64bc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.817780] fff00000c64bc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.817829] ==================================================================
[ 11.364618] ================================================================== [ 11.365193] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.365898] Read of size 1 at addr ffff888102a44000 by task kunit_try_catch/165 [ 11.367205] [ 11.367544] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.367601] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.367615] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.367639] Call Trace: [ 11.367656] <TASK> [ 11.367676] dump_stack_lvl+0x73/0xb0 [ 11.367714] print_report+0xd1/0x650 [ 11.367738] ? __virt_addr_valid+0x1db/0x2d0 [ 11.367760] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.367780] ? kasan_addr_to_slab+0x11/0xa0 [ 11.367799] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.367819] kasan_report+0x141/0x180 [ 11.367839] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.367863] __asan_report_load1_noabort+0x18/0x20 [ 11.367886] kmalloc_large_uaf+0x2f1/0x340 [ 11.367906] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.367926] ? __schedule+0x10cc/0x2b60 [ 11.367947] ? __pfx_read_tsc+0x10/0x10 [ 11.367968] ? ktime_get_ts64+0x86/0x230 [ 11.367992] kunit_try_run_case+0x1a5/0x480 [ 11.368017] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.368038] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.368060] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.368081] ? __kthread_parkme+0x82/0x180 [ 11.368100] ? preempt_count_sub+0x50/0x80 [ 11.368122] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.368144] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.368165] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.368186] kthread+0x337/0x6f0 [ 11.368204] ? trace_preempt_on+0x20/0xc0 [ 11.368236] ? __pfx_kthread+0x10/0x10 [ 11.368256] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.368275] ? calculate_sigpending+0x7b/0xa0 [ 11.368298] ? __pfx_kthread+0x10/0x10 [ 11.368351] ret_from_fork+0x116/0x1d0 [ 11.368369] ? __pfx_kthread+0x10/0x10 [ 11.368388] ret_from_fork_asm+0x1a/0x30 [ 11.368429] </TASK> [ 11.368441] [ 11.379597] The buggy address belongs to the physical page: [ 11.379957] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a44 [ 11.380330] flags: 0x200000000000000(node=0|zone=2) [ 11.380672] raw: 0200000000000000 ffffea00040a9208 ffff88815b039f80 0000000000000000 [ 11.381033] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.381441] page dumped because: kasan: bad access detected [ 11.381798] [ 11.381899] Memory state around the buggy address: [ 11.382294] ffff888102a43f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.382666] ffff888102a43f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.383020] >ffff888102a44000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.383363] ^ [ 11.383515] ffff888102a44080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.383829] ffff888102a44100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.384131] ==================================================================