Date
June 25, 2025, 8:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 26.367225] ================================================================== [ 26.367357] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 26.367647] Read of size 1 at addr fff00000c7820000 by task kunit_try_catch/160 [ 26.367854] [ 26.367948] CPU: 1 UID: 0 PID: 160 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT [ 26.368182] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.368214] Hardware name: linux,dummy-virt (DT) [ 26.368246] Call trace: [ 26.368563] show_stack+0x20/0x38 (C) [ 26.368620] dump_stack_lvl+0x8c/0xd0 [ 26.368867] print_report+0x118/0x608 [ 26.368927] kasan_report+0xdc/0x128 [ 26.369097] __asan_report_load1_noabort+0x20/0x30 [ 26.369147] kmalloc_large_uaf+0x2cc/0x2f8 [ 26.369191] kunit_try_run_case+0x170/0x3f0 [ 26.369241] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.369293] kthread+0x328/0x630 [ 26.369334] ret_from_fork+0x10/0x20 [ 26.369380] [ 26.369422] The buggy address belongs to the physical page: [ 26.369453] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107820 [ 26.369678] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 26.370033] raw: 0bfffe0000000000 ffffc1ffc31e0908 fff00000da488c80 0000000000000000 [ 26.370087] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 26.370130] page dumped because: kasan: bad access detected [ 26.370160] [ 26.370179] Memory state around the buggy address: [ 26.370573] fff00000c781ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.370618] fff00000c781ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 26.370659] >fff00000c7820000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.370695] ^ [ 26.370997] fff00000c7820080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.371109] fff00000c7820100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 26.371146] ==================================================================
[ 21.408390] ================================================================== [ 21.409014] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 21.409546] Read of size 1 at addr ffff888102ccc000 by task kunit_try_catch/177 [ 21.410233] [ 21.410359] CPU: 1 UID: 0 PID: 177 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc3-next-20250625 #1 PREEMPT(voluntary) [ 21.410411] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.410575] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 21.410600] Call Trace: [ 21.410615] <TASK> [ 21.410633] dump_stack_lvl+0x73/0xb0 [ 21.410662] print_report+0xd1/0x650 [ 21.410684] ? __virt_addr_valid+0x1db/0x2d0 [ 21.410707] ? kmalloc_large_uaf+0x2f1/0x340 [ 21.410727] ? kasan_addr_to_slab+0x11/0xa0 [ 21.410746] ? kmalloc_large_uaf+0x2f1/0x340 [ 21.410767] kasan_report+0x141/0x180 [ 21.410789] ? kmalloc_large_uaf+0x2f1/0x340 [ 21.410816] __asan_report_load1_noabort+0x18/0x20 [ 21.410840] kmalloc_large_uaf+0x2f1/0x340 [ 21.410860] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 21.410880] ? __schedule+0x10cc/0x2b60 [ 21.410905] ? __pfx_read_tsc+0x10/0x10 [ 21.410925] ? ktime_get_ts64+0x86/0x230 [ 21.410965] kunit_try_run_case+0x1a5/0x480 [ 21.410990] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.411012] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 21.411031] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 21.411055] ? __kthread_parkme+0x82/0x180 [ 21.411075] ? preempt_count_sub+0x50/0x80 [ 21.411098] ? __pfx_kunit_try_run_case+0x10/0x10 [ 21.411122] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 21.411145] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 21.411166] kthread+0x337/0x6f0 [ 21.411185] ? trace_preempt_on+0x20/0xc0 [ 21.411208] ? __pfx_kthread+0x10/0x10 [ 21.411227] ? _raw_spin_unlock_irq+0x47/0x80 [ 21.411249] ? calculate_sigpending+0x7b/0xa0 [ 21.411272] ? __pfx_kthread+0x10/0x10 [ 21.411293] ret_from_fork+0x116/0x1d0 [ 21.411311] ? __pfx_kthread+0x10/0x10 [ 21.411330] ret_from_fork_asm+0x1a/0x30 [ 21.411365] </TASK> [ 21.411376] [ 21.421050] The buggy address belongs to the physical page: [ 21.421439] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ccc [ 21.421852] flags: 0x200000000000000(node=0|zone=2) [ 21.422344] raw: 0200000000000000 ffffea00040b1008 ffff88815b139fc0 0000000000000000 [ 21.422654] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 21.422992] page dumped because: kasan: bad access detected [ 21.423522] [ 21.423614] Memory state around the buggy address: [ 21.423995] ffff888102ccbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.424336] ffff888102ccbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.424629] >ffff888102ccc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.425118] ^ [ 21.425315] ffff888102ccc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.425667] ffff888102ccc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 21.426180] ==================================================================