Date
May 12, 2025, 11:48 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 16.397239] ================================================================== [ 16.397370] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 16.397631] Read of size 1 at addr fff00000c7910000 by task kunit_try_catch/154 [ 16.397872] [ 16.397940] CPU: 1 UID: 0 PID: 154 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT [ 16.398441] Tainted: [B]=BAD_PAGE, [N]=TEST [ 16.398545] Hardware name: linux,dummy-virt (DT) [ 16.398627] Call trace: [ 16.398676] show_stack+0x20/0x38 (C) [ 16.398999] dump_stack_lvl+0x8c/0xd0 [ 16.399141] print_report+0x118/0x608 [ 16.399235] kasan_report+0xdc/0x128 [ 16.399409] __asan_report_load1_noabort+0x20/0x30 [ 16.399505] page_alloc_uaf+0x328/0x350 [ 16.399651] kunit_try_run_case+0x170/0x3f0 [ 16.399899] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 16.400138] kthread+0x328/0x630 [ 16.400371] ret_from_fork+0x10/0x20 [ 16.400888] [ 16.400953] The buggy address belongs to the physical page: [ 16.401130] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107910 [ 16.401384] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 16.401706] page_type: f0(buddy) [ 16.401832] raw: 0bfffe0000000000 fff00000ff6160a0 fff00000ff6160a0 0000000000000000 [ 16.402055] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 16.402158] page dumped because: kasan: bad access detected [ 16.402228] [ 16.402267] Memory state around the buggy address: [ 16.402336] fff00000c790ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.402434] fff00000c790ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.402518] >fff00000c7910000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.402590] ^ [ 16.402641] fff00000c7910080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.402724] fff00000c7910100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 16.402799] ==================================================================
[ 15.977583] ================================================================== [ 15.978356] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 15.979268] Read of size 1 at addr ffff888103bf0000 by task kunit_try_catch/171 [ 15.979598] [ 15.979779] CPU: 0 UID: 0 PID: 171 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250512 #1 PREEMPT(voluntary) [ 15.979882] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.979908] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.979950] Call Trace: [ 15.979977] <TASK> [ 15.980014] dump_stack_lvl+0x73/0xb0 [ 15.980085] print_report+0xd1/0x650 [ 15.980134] ? __virt_addr_valid+0x1db/0x2d0 [ 15.980177] ? page_alloc_uaf+0x356/0x3d0 [ 15.980215] ? kasan_addr_to_slab+0x11/0xa0 [ 15.980253] ? page_alloc_uaf+0x356/0x3d0 [ 15.980315] kasan_report+0x141/0x180 [ 15.980361] ? page_alloc_uaf+0x356/0x3d0 [ 15.980416] __asan_report_load1_noabort+0x18/0x20 [ 15.980460] page_alloc_uaf+0x356/0x3d0 [ 15.980507] ? __pfx_page_alloc_uaf+0x10/0x10 [ 15.980549] ? irqentry_exit+0x2a/0x60 [ 15.980624] ? sysvec_apic_timer_interrupt+0x50/0x90 [ 15.980679] ? __pfx_read_tsc+0x10/0x10 [ 15.980720] ? ktime_get_ts64+0x86/0x230 [ 15.980776] kunit_try_run_case+0x1a5/0x480 [ 15.980806] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.980829] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 15.980855] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 15.980878] ? __kthread_parkme+0x82/0x180 [ 15.980901] ? preempt_count_sub+0x50/0x80 [ 15.980925] ? __pfx_kunit_try_run_case+0x10/0x10 [ 15.980950] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 15.980973] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 15.980997] kthread+0x337/0x6f0 [ 15.981017] ? trace_preempt_on+0x20/0xc0 [ 15.981051] ? __pfx_kthread+0x10/0x10 [ 15.981101] ? _raw_spin_unlock_irq+0x47/0x80 [ 15.981135] ? calculate_sigpending+0x7b/0xa0 [ 15.981165] ? __pfx_kthread+0x10/0x10 [ 15.981187] ret_from_fork+0x116/0x1d0 [ 15.981207] ? __pfx_kthread+0x10/0x10 [ 15.981228] ret_from_fork_asm+0x1a/0x30 [ 15.981281] </TASK> [ 15.981298] [ 15.992855] The buggy address belongs to the physical page: [ 15.993431] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103bf0 [ 15.993885] flags: 0x200000000000000(node=0|zone=2) [ 15.994474] page_type: f0(buddy) [ 15.994714] raw: 0200000000000000 ffff88817fffc460 ffff88817fffc460 0000000000000000 [ 15.995343] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 15.995928] page dumped because: kasan: bad access detected [ 15.996466] [ 15.996632] Memory state around the buggy address: [ 15.996880] ffff888103beff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.997486] ffff888103beff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.997798] >ffff888103bf0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.998321] ^ [ 15.998615] ffff888103bf0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.998979] ffff888103bf0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.999526] ==================================================================