Date
July 19, 2025, 11:12 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 15.038353] ================================================================== [ 15.038451] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 15.038669] Read of size 1 at addr fff00000c60f0000 by task kunit_try_catch/148 [ 15.038729] [ 15.038758] CPU: 1 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT [ 15.038849] Tainted: [B]=BAD_PAGE, [N]=TEST [ 15.038875] Hardware name: linux,dummy-virt (DT) [ 15.038904] Call trace: [ 15.038926] show_stack+0x20/0x38 (C) [ 15.039029] dump_stack_lvl+0x8c/0xd0 [ 15.039127] print_report+0x118/0x5d0 [ 15.039286] kasan_report+0xdc/0x128 [ 15.039425] __asan_report_load1_noabort+0x20/0x30 [ 15.039475] kmalloc_large_uaf+0x2cc/0x2f8 [ 15.039519] kunit_try_run_case+0x170/0x3f0 [ 15.039602] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 15.039671] kthread+0x328/0x630 [ 15.039830] ret_from_fork+0x10/0x20 [ 15.039894] [ 15.039974] The buggy address belongs to the physical page: [ 15.040025] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1060f0 [ 15.040076] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 15.040184] raw: 0bfffe0000000000 ffffc1ffc3183d08 fff00000da478c40 0000000000000000 [ 15.040245] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 15.040347] page dumped because: kasan: bad access detected [ 15.040377] [ 15.040395] Memory state around the buggy address: [ 15.040426] fff00000c60eff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.040466] fff00000c60eff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 15.040507] >fff00000c60f0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.040543] ^ [ 15.040586] fff00000c60f0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.040774] fff00000c60f0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 15.040850] ==================================================================
[ 11.523298] ================================================================== [ 11.524909] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.526263] Read of size 1 at addr ffff888102944000 by task kunit_try_catch/165 [ 11.527357] [ 11.527771] CPU: 0 UID: 0 PID: 165 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc6 #1 PREEMPT(voluntary) [ 11.527858] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.527870] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.527890] Call Trace: [ 11.527902] <TASK> [ 11.527917] dump_stack_lvl+0x73/0xb0 [ 11.527947] print_report+0xd1/0x610 [ 11.527968] ? __virt_addr_valid+0x1db/0x2d0 [ 11.527989] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.528018] ? kasan_addr_to_slab+0x11/0xa0 [ 11.528038] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.528058] kasan_report+0x141/0x180 [ 11.528078] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.528102] __asan_report_load1_noabort+0x18/0x20 [ 11.528125] kmalloc_large_uaf+0x2f1/0x340 [ 11.528144] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.528165] ? __schedule+0x207f/0x2b60 [ 11.528186] ? __pfx_read_tsc+0x10/0x10 [ 11.528208] ? ktime_get_ts64+0x86/0x230 [ 11.528233] kunit_try_run_case+0x1a5/0x480 [ 11.528257] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.528279] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.528302] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.528324] ? __kthread_parkme+0x82/0x180 [ 11.528344] ? preempt_count_sub+0x50/0x80 [ 11.528365] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.528388] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.528409] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.528455] kthread+0x337/0x6f0 [ 11.528473] ? trace_preempt_on+0x20/0xc0 [ 11.528495] ? __pfx_kthread+0x10/0x10 [ 11.528515] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.528534] ? calculate_sigpending+0x7b/0xa0 [ 11.528558] ? __pfx_kthread+0x10/0x10 [ 11.528578] ret_from_fork+0x116/0x1d0 [ 11.528595] ? __pfx_kthread+0x10/0x10 [ 11.528614] ret_from_fork_asm+0x1a/0x30 [ 11.528643] </TASK> [ 11.528653] [ 11.541538] The buggy address belongs to the physical page: [ 11.542122] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102944 [ 11.542738] flags: 0x200000000000000(node=0|zone=2) [ 11.542921] raw: 0200000000000000 ffffea00040a5208 ffff88815b039f80 0000000000000000 [ 11.543166] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.543409] page dumped because: kasan: bad access detected [ 11.543615] [ 11.543710] Memory state around the buggy address: [ 11.543932] ffff888102943f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.544216] ffff888102943f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.544620] >ffff888102944000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.544974] ^ [ 11.545130] ffff888102944080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.545477] ffff888102944100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.545924] ==================================================================