Date
July 1, 2025, 12:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.174234] ================================================================== [ 17.174298] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 17.174360] Read of size 1 at addr fff00000c78e0000 by task kunit_try_catch/154 [ 17.174410] [ 17.174469] CPU: 1 UID: 0 PID: 154 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 17.174624] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.174798] Hardware name: linux,dummy-virt (DT) [ 17.174953] Call trace: [ 17.175013] show_stack+0x20/0x38 (C) [ 17.175125] dump_stack_lvl+0x8c/0xd0 [ 17.175290] print_report+0x118/0x608 [ 17.175366] kasan_report+0xdc/0x128 [ 17.175501] __asan_report_load1_noabort+0x20/0x30 [ 17.175692] page_alloc_uaf+0x328/0x350 [ 17.175964] kunit_try_run_case+0x170/0x3f0 [ 17.176139] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.176275] kthread+0x328/0x630 [ 17.176414] ret_from_fork+0x10/0x20 [ 17.176526] [ 17.176556] The buggy address belongs to the physical page: [ 17.176590] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1078e0 [ 17.176648] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.177172] page_type: f0(buddy) [ 17.177252] raw: 0bfffe0000000000 fff00000ff616108 fff00000ff616108 0000000000000000 [ 17.177387] raw: 0000000000000000 0000000000000005 00000000f0000000 0000000000000000 [ 17.177533] page dumped because: kasan: bad access detected [ 17.177651] [ 17.177731] Memory state around the buggy address: [ 17.178080] fff00000c78dff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.178289] fff00000c78dff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.178378] >fff00000c78e0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.178430] ^ [ 17.178469] fff00000c78e0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.178521] fff00000c78e0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.178560] ==================================================================
[ 11.050781] ================================================================== [ 11.051642] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 11.051921] Read of size 1 at addr ffff888103950000 by task kunit_try_catch/171 [ 11.052272] [ 11.052470] CPU: 1 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.052516] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.052527] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.052547] Call Trace: [ 11.052558] <TASK> [ 11.052573] dump_stack_lvl+0x73/0xb0 [ 11.052601] print_report+0xd1/0x650 [ 11.052623] ? __virt_addr_valid+0x1db/0x2d0 [ 11.052645] ? page_alloc_uaf+0x356/0x3d0 [ 11.052666] ? kasan_addr_to_slab+0x11/0xa0 [ 11.052685] ? page_alloc_uaf+0x356/0x3d0 [ 11.052706] kasan_report+0x141/0x180 [ 11.052727] ? page_alloc_uaf+0x356/0x3d0 [ 11.052753] __asan_report_load1_noabort+0x18/0x20 [ 11.052776] page_alloc_uaf+0x356/0x3d0 [ 11.052797] ? __pfx_page_alloc_uaf+0x10/0x10 [ 11.052819] ? __schedule+0x10cc/0x2b60 [ 11.052839] ? __pfx_read_tsc+0x10/0x10 [ 11.052859] ? ktime_get_ts64+0x86/0x230 [ 11.052882] kunit_try_run_case+0x1a5/0x480 [ 11.052905] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.052926] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.052948] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.052969] ? __kthread_parkme+0x82/0x180 [ 11.052989] ? preempt_count_sub+0x50/0x80 [ 11.053010] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.053047] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.053068] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.053090] kthread+0x337/0x6f0 [ 11.053108] ? trace_preempt_on+0x20/0xc0 [ 11.053129] ? __pfx_kthread+0x10/0x10 [ 11.053187] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.053210] ? calculate_sigpending+0x7b/0xa0 [ 11.053232] ? __pfx_kthread+0x10/0x10 [ 11.053253] ret_from_fork+0x116/0x1d0 [ 11.053270] ? __pfx_kthread+0x10/0x10 [ 11.053290] ret_from_fork_asm+0x1a/0x30 [ 11.053319] </TASK> [ 11.053330] [ 11.065232] The buggy address belongs to the physical page: [ 11.065807] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103950 [ 11.066589] flags: 0x200000000000000(node=0|zone=2) [ 11.066761] page_type: f0(buddy) [ 11.066885] raw: 0200000000000000 ffff88817fffc460 ffff88817fffc460 0000000000000000 [ 11.067218] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 11.067502] page dumped because: kasan: bad access detected [ 11.067740] [ 11.067811] Memory state around the buggy address: [ 11.068053] ffff88810394ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.068386] ffff88810394ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.068824] >ffff888103950000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.069284] ^ [ 11.069422] ffff888103950080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.069672] ffff888103950100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.069955] ==================================================================