Date
June 2, 2025, 2:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.262090] ================================================================== [ 19.263998] BUG: KASAN: use-after-free in page_alloc_uaf+0x33c/0x368 [ 19.264522] Read of size 1 at addr fff00000c6c40000 by task kunit_try_catch/141 [ 19.265069] [ 19.265399] CPU: 0 UID: 0 PID: 141 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 19.265613] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.265681] Hardware name: linux,dummy-virt (DT) [ 19.265764] Call trace: [ 19.265823] dump_backtrace+0x9c/0x128 [ 19.265941] show_stack+0x20/0x38 [ 19.266033] dump_stack_lvl+0x8c/0xd0 [ 19.266121] print_report+0x118/0x5f0 [ 19.266210] kasan_report+0xdc/0x128 [ 19.266309] __asan_report_load1_noabort+0x20/0x30 [ 19.266406] page_alloc_uaf+0x33c/0x368 [ 19.266496] kunit_try_run_case+0x170/0x3f0 [ 19.266545] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.266605] kthread+0x24c/0x2d0 [ 19.266659] ret_from_fork+0x10/0x20 [ 19.266707] [ 19.270986] The buggy address belongs to the physical page: [ 19.272583] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106c40 [ 19.273505] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.274097] page_type: f0(buddy) [ 19.274496] raw: 0bfffe0000000000 fff00000ff6163b0 fff00000ff6163b0 0000000000000000 [ 19.275186] raw: 0000000000000000 0000000000000006 00000000f0000000 0000000000000000 [ 19.276256] page dumped because: kasan: bad access detected [ 19.276692] [ 19.276919] Memory state around the buggy address: [ 19.277362] fff00000c6c3ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.277909] fff00000c6c3ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.278707] >fff00000c6c40000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.279503] ^ [ 19.279869] fff00000c6c40080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.280516] fff00000c6c40100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.281118] ==================================================================
[ 11.552856] ================================================================== [ 11.553700] BUG: KASAN: use-after-free in page_alloc_uaf+0x358/0x3d0 [ 11.554013] Read of size 1 at addr ffff888102ae0000 by task kunit_try_catch/159 [ 11.555055] [ 11.555735] CPU: 1 UID: 0 PID: 159 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 11.555798] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.555810] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.555830] Call Trace: [ 11.555844] <TASK> [ 11.555863] dump_stack_lvl+0x73/0xb0 [ 11.555895] print_report+0xd1/0x640 [ 11.555917] ? __virt_addr_valid+0x1db/0x2d0 [ 11.555938] ? page_alloc_uaf+0x358/0x3d0 [ 11.555955] ? kasan_addr_to_slab+0x11/0xa0 [ 11.555974] ? page_alloc_uaf+0x358/0x3d0 [ 11.555991] kasan_report+0x140/0x180 [ 11.556012] ? page_alloc_uaf+0x358/0x3d0 [ 11.556033] __asan_report_load1_noabort+0x18/0x20 [ 11.556056] page_alloc_uaf+0x358/0x3d0 [ 11.556083] ? __pfx_page_alloc_uaf+0x10/0x10 [ 11.556119] ? __schedule+0xc49/0x27a0 [ 11.556139] ? __pfx_read_tsc+0x10/0x10 [ 11.556157] ? ktime_get_ts64+0x84/0x230 [ 11.556181] kunit_try_run_case+0x1a6/0x480 [ 11.556202] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.556220] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 11.556238] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.556260] ? __kthread_parkme+0x82/0x160 [ 11.556278] ? preempt_count_sub+0x50/0x80 [ 11.556299] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.556316] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.556338] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.556360] kthread+0x257/0x310 [ 11.556376] ? __pfx_kthread+0x10/0x10 [ 11.556394] ret_from_fork+0x41/0x80 [ 11.556412] ? __pfx_kthread+0x10/0x10 [ 11.556429] ret_from_fork_asm+0x1a/0x30 [ 11.556456] </TASK> [ 11.556468] [ 11.564571] The buggy address belongs to the physical page: [ 11.565011] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ae0 [ 11.565727] flags: 0x200000000000000(node=0|zone=2) [ 11.566141] page_type: f0(buddy) [ 11.566608] raw: 0200000000000000 ffff88817fffb4e8 ffff88817fffb4e8 0000000000000000 [ 11.567305] raw: 0000000000000000 0000000000000005 00000000f0000000 0000000000000000 [ 11.567761] page dumped because: kasan: bad access detected [ 11.567955] [ 11.568092] Memory state around the buggy address: [ 11.568426] ffff888102adff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.568890] ffff888102adff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.569523] >ffff888102ae0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.570053] ^ [ 11.570818] ffff888102ae0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.571153] ffff888102ae0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.571831] ==================================================================