Date
July 20, 2025, 11:12 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.198577] ================================================================== [ 15.198642] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 15.198710] Read of size 1 at addr fff00000c7750000 by task kunit_try_catch/148 [ 15.198759] [ 15.198879] CPU: 0 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.198994] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.199143] Hardware name: linux,dummy-virt (DT) [ 15.199202] Call trace: [ 15.199297] show_stack+0x20/0x38 (C) [ 15.199393] dump_stack_lvl+0x8c/0xd0 [ 15.199454] print_report+0x118/0x5d0 [ 15.199525] kasan_report+0xdc/0x128 [ 15.199581] __asan_report_load1_noabort+0x20/0x30 [ 15.199629] kmalloc_large_uaf+0x2cc/0x2f8 [ 15.199683] kunit_try_run_case+0x170/0x3f0 [ 15.199728] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.199777] kthread+0x328/0x630 [ 15.199943] ret_from_fork+0x10/0x20 [ 15.199993] [ 15.200014] The buggy address belongs to the physical page: [ 15.200112] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107750 [ 15.200266] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.200388] raw: 0bfffe0000000000 ffffc1ffc31dd508 fff00000da457c40 0000000000000000 [ 15.200469] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 15.200613] page dumped because: kasan: bad access detected [ 15.200723] [ 15.200838] Memory state around the buggy address: [ 15.200926] fff00000c774ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.201104] fff00000c774ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.201165] >fff00000c7750000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.201230] ^ [ 15.201558] fff00000c7750080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.201688] fff00000c7750100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.201989] ==================================================================
[ 11.780245] ================================================================== [ 11.780765] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.781020] Read of size 1 at addr ffff888102b74000 by task kunit_try_catch/165 [ 11.781663] [ 11.782008] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.782057] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.782068] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.782088] Call Trace: [ 11.782102] <TASK> [ 11.782116] dump_stack_lvl+0x73/0xb0 [ 11.782145] print_report+0xd1/0x610 [ 11.782167] ? __virt_addr_valid+0x1db/0x2d0 [ 11.782189] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.782228] ? kasan_addr_to_slab+0x11/0xa0 [ 11.782248] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.782268] kasan_report+0x141/0x180 [ 11.782289] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.782313] __asan_report_load1_noabort+0x18/0x20 [ 11.782335] kmalloc_large_uaf+0x2f1/0x340 [ 11.782354] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.782375] ? __schedule+0x10cc/0x2b60 [ 11.782397] ? __pfx_read_tsc+0x10/0x10 [ 11.782418] ? ktime_get_ts64+0x86/0x230 [ 11.782441] kunit_try_run_case+0x1a5/0x480 [ 11.782465] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.782486] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.782507] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.782529] ? __kthread_parkme+0x82/0x180 [ 11.782548] ? preempt_count_sub+0x50/0x80 [ 11.782571] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.782593] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.782614] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.782636] kthread+0x337/0x6f0 [ 11.782654] ? trace_preempt_on+0x20/0xc0 [ 11.782675] ? __pfx_kthread+0x10/0x10 [ 11.782695] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.782716] ? calculate_sigpending+0x7b/0xa0 [ 11.782739] ? __pfx_kthread+0x10/0x10 [ 11.782759] ret_from_fork+0x116/0x1d0 [ 11.782777] ? __pfx_kthread+0x10/0x10 [ 11.782796] ret_from_fork_asm+0x1a/0x30 [ 11.782825] </TASK> [ 11.782835] [ 11.796054] The buggy address belongs to the physical page: [ 11.796646] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b74 [ 11.797114] flags: 0x200000000000000(node=0|zone=2) [ 11.797292] raw: 0200000000000000 ffffea00040ade08 ffff88815b039f80 0000000000000000 [ 11.798096] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.798802] page dumped because: kasan: bad access detected [ 11.799282] [ 11.799504] Memory state around the buggy address: [ 11.799824] ffff888102b73f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.800404] ffff888102b73f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.800769] >ffff888102b74000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.800993] ^ [ 11.801110] ffff888102b74080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.801325] ffff888102b74100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.802019] ==================================================================