Date
May 26, 2025, 9:10 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.060277] ================================================================== [ 17.060445] BUG: KASAN: use-after-free in page_alloc_uaf+0x328/0x350 [ 17.060596] Read of size 1 at addr fff00000c7910000 by task kunit_try_catch/154 [ 17.060717] [ 17.060803] CPU: 0 UID: 0 PID: 154 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT [ 17.061010] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.061079] Hardware name: linux,dummy-virt (DT) [ 17.061168] Call trace: [ 17.061251] show_stack+0x20/0x38 (C) [ 17.061390] dump_stack_lvl+0x8c/0xd0 [ 17.061508] print_report+0x118/0x608 [ 17.061627] kasan_report+0xdc/0x128 [ 17.061720] __asan_report_load1_noabort+0x20/0x30 [ 17.061835] page_alloc_uaf+0x328/0x350 [ 17.061950] kunit_try_run_case+0x170/0x3f0 [ 17.062181] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.062327] kthread+0x328/0x630 [ 17.062433] ret_from_fork+0x10/0x20 [ 17.062554] [ 17.062604] The buggy address belongs to the physical page: [ 17.062704] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107910 [ 17.062912] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.063023] page_type: f0(buddy) [ 17.063109] raw: 0bfffe0000000000 fff00000ff6160a0 fff00000ff6160a0 0000000000000000 [ 17.063209] raw: 0000000000000000 0000000000000004 00000000f0000000 0000000000000000 [ 17.063281] page dumped because: kasan: bad access detected [ 17.063629] [ 17.063719] Memory state around the buggy address: [ 17.063807] fff00000c790ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.064037] fff00000c790ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.064507] >fff00000c7910000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.064683] ^ [ 17.064749] fff00000c7910080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.065089] fff00000c7910100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.065387] ==================================================================
[ 10.572610] ================================================================== [ 10.573586] BUG: KASAN: use-after-free in page_alloc_uaf+0x356/0x3d0 [ 10.573900] Read of size 1 at addr ffff888103940000 by task kunit_try_catch/172 [ 10.574367] [ 10.574498] CPU: 0 UID: 0 PID: 172 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc7-next-20250526 #1 PREEMPT(voluntary) [ 10.574566] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.574578] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.574615] Call Trace: [ 10.574629] <TASK> [ 10.574645] dump_stack_lvl+0x73/0xb0 [ 10.574689] print_report+0xd1/0x650 [ 10.574712] ? __virt_addr_valid+0x1db/0x2d0 [ 10.574735] ? page_alloc_uaf+0x356/0x3d0 [ 10.574757] ? kasan_addr_to_slab+0x11/0xa0 [ 10.574778] ? page_alloc_uaf+0x356/0x3d0 [ 10.574801] kasan_report+0x141/0x180 [ 10.574823] ? page_alloc_uaf+0x356/0x3d0 [ 10.574849] __asan_report_load1_noabort+0x18/0x20 [ 10.574870] page_alloc_uaf+0x356/0x3d0 [ 10.574892] ? __pfx_page_alloc_uaf+0x10/0x10 [ 10.574915] ? __schedule+0x10cc/0x2b60 [ 10.574938] ? __pfx_read_tsc+0x10/0x10 [ 10.574959] ? ktime_get_ts64+0x86/0x230 [ 10.574984] kunit_try_run_case+0x1a5/0x480 [ 10.575085] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.575108] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.575133] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.575157] ? __kthread_parkme+0x82/0x180 [ 10.575177] ? preempt_count_sub+0x50/0x80 [ 10.575200] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.575221] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.575244] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.575268] kthread+0x337/0x6f0 [ 10.575287] ? trace_preempt_on+0x20/0xc0 [ 10.575310] ? __pfx_kthread+0x10/0x10 [ 10.575330] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.575352] ? calculate_sigpending+0x7b/0xa0 [ 10.575386] ? __pfx_kthread+0x10/0x10 [ 10.575407] ret_from_fork+0x116/0x1d0 [ 10.575425] ? __pfx_kthread+0x10/0x10 [ 10.575445] ret_from_fork_asm+0x1a/0x30 [ 10.575475] </TASK> [ 10.575485] [ 10.583469] The buggy address belongs to the physical page: [ 10.583751] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103940 [ 10.584408] flags: 0x200000000000000(node=0|zone=2) [ 10.584840] page_type: f0(buddy) [ 10.585293] raw: 0200000000000000 ffff88817fffd4f0 ffff88817fffd4f0 0000000000000000 [ 10.586372] raw: 0000000000000000 0000000000000006 00000000f0000000 0000000000000000 [ 10.586730] page dumped because: kasan: bad access detected [ 10.587264] [ 10.587370] Memory state around the buggy address: [ 10.587776] ffff88810393ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.588208] ffff88810393ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.588597] >ffff888103940000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.589283] ^ [ 10.589516] ffff888103940080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.589783] ffff888103940100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 10.590484] ==================================================================