Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.189505] ================================================================== [ 18.189613] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 18.189949] Read of size 1 at addr fff00000c64b0000 by task kunit_try_catch/149 [ 18.190068] [ 18.190148] CPU: 1 UID: 0 PID: 149 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.190269] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.190328] Hardware name: linux,dummy-virt (DT) [ 18.190366] Call trace: [ 18.190452] show_stack+0x20/0x38 (C) [ 18.190532] dump_stack_lvl+0x8c/0xd0 [ 18.190610] print_report+0x118/0x608 [ 18.190735] kasan_report+0xdc/0x128 [ 18.190783] __asan_report_load1_noabort+0x20/0x30 [ 18.190836] kmalloc_large_uaf+0x2cc/0x2f8 [ 18.190882] kunit_try_run_case+0x170/0x3f0 [ 18.190950] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.191159] kthread+0x328/0x630 [ 18.191384] ret_from_fork+0x10/0x20 [ 18.191517] [ 18.191587] The buggy address belongs to the physical page: [ 18.191669] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1064b0 [ 18.191804] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.191973] raw: 0bfffe0000000000 ffffc1ffc3192d08 fff00000da478c40 0000000000000000 [ 18.192111] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 18.192223] page dumped because: kasan: bad access detected [ 18.192257] [ 18.192276] Memory state around the buggy address: [ 18.192314] fff00000c64aff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.192522] fff00000c64aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.192571] >fff00000c64b0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.192809] ^ [ 18.192881] fff00000c64b0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.192973] fff00000c64b0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.193015] ==================================================================
[ 11.068991] ================================================================== [ 11.069702] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.070540] Read of size 1 at addr ffff888102be0000 by task kunit_try_catch/165 [ 11.071320] [ 11.071474] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.071522] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.071534] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.071555] Call Trace: [ 11.071568] <TASK> [ 11.071588] dump_stack_lvl+0x73/0xb0 [ 11.071619] print_report+0xd1/0x650 [ 11.071643] ? __virt_addr_valid+0x1db/0x2d0 [ 11.071666] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.071686] ? kasan_addr_to_slab+0x11/0xa0 [ 11.071705] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.071726] kasan_report+0x141/0x180 [ 11.071746] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.071770] __asan_report_load1_noabort+0x18/0x20 [ 11.071793] kmalloc_large_uaf+0x2f1/0x340 [ 11.071812] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.071832] ? __schedule+0x10cc/0x2b60 [ 11.071853] ? __pfx_read_tsc+0x10/0x10 [ 11.071874] ? ktime_get_ts64+0x86/0x230 [ 11.071897] kunit_try_run_case+0x1a5/0x480 [ 11.071930] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.071951] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.071973] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.071994] ? __kthread_parkme+0x82/0x180 [ 11.072014] ? preempt_count_sub+0x50/0x80 [ 11.072037] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.072059] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.072080] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.072101] kthread+0x337/0x6f0 [ 11.072119] ? trace_preempt_on+0x20/0xc0 [ 11.072142] ? __pfx_kthread+0x10/0x10 [ 11.072171] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.072192] ? calculate_sigpending+0x7b/0xa0 [ 11.072214] ? __pfx_kthread+0x10/0x10 [ 11.072234] ret_from_fork+0x116/0x1d0 [ 11.072252] ? __pfx_kthread+0x10/0x10 [ 11.072270] ret_from_fork_asm+0x1a/0x30 [ 11.072301] </TASK> [ 11.072312] [ 11.085656] The buggy address belongs to the physical page: [ 11.085866] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102be0 [ 11.086581] flags: 0x200000000000000(node=0|zone=2) [ 11.087168] raw: 0200000000000000 ffffea00040af908 ffff88815b039f80 0000000000000000 [ 11.087968] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.088539] page dumped because: kasan: bad access detected [ 11.088940] [ 11.089308] Memory state around the buggy address: [ 11.089713] ffff888102bdff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.089943] ffff888102bdff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.090632] >ffff888102be0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.091338] ^ [ 11.091515] ffff888102be0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.092114] ffff888102be0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.092534] ==================================================================