Date
June 17, 2025, 3:39 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 91.708263] ================================================================== [ 91.710082] BUG: KASAN: use-after-free in pagealloc_uaf+0xd4/0x1e8 [ 91.711362] Read of size 1 at addr ffff0000c6030000 by task kunit_try_catch/131 [ 91.712680] [ 91.713175] CPU: 1 PID: 131 Comm: kunit_try_catch Tainted: G B N 6.6.94-rc1 #1 [ 91.714348] Hardware name: linux,dummy-virt (DT) [ 91.715379] Call trace: [ 91.715887] dump_backtrace+0x9c/0x128 [ 91.716635] show_stack+0x20/0x38 [ 91.717338] dump_stack_lvl+0x60/0xb0 [ 91.718100] print_report+0xf8/0x5e8 [ 91.719095] kasan_report+0xdc/0x128 [ 91.719856] __asan_load1+0x60/0x70 [ 91.720377] pagealloc_uaf+0xd4/0x1e8 [ 91.721109] kunit_try_run_case+0x114/0x298 [ 91.722086] kunit_generic_run_threadfn_adapter+0x38/0x60 [ 91.723253] kthread+0x18c/0x1a8 [ 91.723969] ret_from_fork+0x10/0x20 [ 91.724808] [ 91.725255] The buggy address belongs to the physical page: [ 91.726160] page:000000002a5181b9 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106030 [ 91.727622] flags: 0xbfffc0000000000(node=0|zone=2|lastcpupid=0xffff) [ 91.728756] page_type: 0xffffff7f(buddy) [ 91.729711] raw: 0bfffc0000000000 ffff0000ff5fc960 ffff0000ff5fc960 0000000000000000 [ 91.731463] raw: 0000000000000000 0000000000000004 00000000ffffff7f 0000000000000000 [ 91.732719] page dumped because: kasan: bad access detected [ 91.733684] [ 91.734064] Memory state around the buggy address: [ 91.735010] ffff0000c602ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 91.736433] ffff0000c602ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 91.737450] >ffff0000c6030000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 91.738598] ^ [ 91.739544] ffff0000c6030080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 91.740745] ffff0000c6030100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 91.741755] ==================================================================
[ 33.314836] ================================================================== [ 33.316835] BUG: KASAN: use-after-free in pagealloc_uaf+0xe9/0x1f0 [ 33.317476] Read of size 1 at addr ffff8881029f0000 by task kunit_try_catch/146 [ 33.318336] [ 33.318941] CPU: 0 PID: 146 Comm: kunit_try_catch Tainted: G B N 6.6.94-rc1 #1 [ 33.320277] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 33.321323] Call Trace: [ 33.321580] <TASK> [ 33.321998] dump_stack_lvl+0x4e/0x90 [ 33.322251] print_report+0xd2/0x650 [ 33.323124] ? __virt_addr_valid+0x156/0x1e0 [ 33.323809] ? pagealloc_uaf+0xe9/0x1f0 [ 33.324410] ? kasan_addr_to_slab+0x11/0xb0 [ 33.325170] ? pagealloc_uaf+0xe9/0x1f0 [ 33.325545] kasan_report+0x147/0x180 [ 33.326075] ? pagealloc_uaf+0xe9/0x1f0 [ 33.326687] __asan_load1+0x66/0x70 [ 33.327379] pagealloc_uaf+0xe9/0x1f0 [ 33.328007] ? __pfx_pagealloc_uaf+0x10/0x10 [ 33.328551] ? __schedule+0x715/0x11a0 [ 33.329068] ? ktime_get_ts64+0x118/0x140 [ 33.329321] kunit_try_run_case+0x120/0x290 [ 33.329570] ? __pfx_kunit_try_run_case+0x10/0x10 [ 33.330381] ? __kasan_check_write+0x18/0x20 [ 33.331189] ? trace_preempt_on+0x20/0xa0 [ 33.331819] ? __kthread_parkme+0x4f/0xd0 [ 33.332463] ? preempt_count_sub+0x50/0x80 [ 33.333135] ? __pfx_kunit_try_run_case+0x10/0x10 [ 33.333891] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 33.334823] kunit_generic_run_threadfn_adapter+0x33/0x50 [ 33.335563] kthread+0x19e/0x1e0 [ 33.336136] ? __pfx_kthread+0x10/0x10 [ 33.336663] ret_from_fork+0x41/0x70 [ 33.337289] ? __pfx_kthread+0x10/0x10 [ 33.337782] ret_from_fork_asm+0x1b/0x30 [ 33.338550] </TASK> [ 33.338940] [ 33.339327] The buggy address belongs to the physical page: [ 33.339775] page:(____ptrval____) refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029f0 [ 33.340884] flags: 0x200000000000000(node=0|zone=2) [ 33.341151] page_type: 0xffffff7f(buddy) [ 33.341413] raw: 0200000000000000 ffff88817fffcb60 ffff88817fffcb60 0000000000000000 [ 33.341749] raw: 0000000000000000 0000000000000004 00000000ffffff7f 0000000000000000 [ 33.342170] page dumped because: kasan: bad access detected [ 33.342572] [ 33.342744] Memory state around the buggy address: [ 33.343330] ffff8881029eff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.343743] ffff8881029eff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.344147] >ffff8881029f0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.344454] ^ [ 33.344686] ffff8881029f0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.345140] ffff8881029f0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 33.345654] ==================================================================