Date
March 19, 2025, 10:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 34.499710] ================================================================== [ 34.499870] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x170/0x310 [ 34.500025] Write of size 33 at addr fff00000c5d89c00 by task kunit_try_catch/188 [ 34.501976] [ 34.503044] CPU: 1 UID: 0 PID: 188 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT [ 34.504820] Tainted: [B]=BAD_PAGE, [N]=TEST [ 34.505477] Hardware name: linux,dummy-virt (DT) [ 34.505779] Call trace: [ 34.506046] show_stack+0x20/0x38 (C) [ 34.506834] dump_stack_lvl+0x8c/0xd0 [ 34.507563] print_report+0x118/0x5f0 [ 34.508272] kasan_report+0xc8/0x118 [ 34.509550] kasan_check_range+0x100/0x1a8 [ 34.509819] __asan_memset+0x34/0x78 [ 34.509967] kmalloc_uaf_memset+0x170/0x310 [ 34.510145] kunit_try_run_case+0x14c/0x3d0 [ 34.510785] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.511886] kthread+0x318/0x618 [ 34.512583] ret_from_fork+0x10/0x20 [ 34.513281] [ 34.513605] Allocated by task 188: [ 34.513701] kasan_save_stack+0x3c/0x68 [ 34.514558] kasan_save_track+0x20/0x40 [ 34.514693] kasan_save_alloc_info+0x40/0x58 [ 34.515425] __kasan_kmalloc+0xd4/0xd8 [ 34.515869] __kmalloc_cache_noprof+0x15c/0x3c0 [ 34.516832] kmalloc_uaf_memset+0xb8/0x310 [ 34.516985] kunit_try_run_case+0x14c/0x3d0 [ 34.517860] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.518398] kthread+0x318/0x618 [ 34.518547] ret_from_fork+0x10/0x20 [ 34.518668] [ 34.518729] Freed by task 188: [ 34.519415] kasan_save_stack+0x3c/0x68 [ 34.519784] kasan_save_track+0x20/0x40 [ 34.520648] kasan_save_free_info+0x4c/0x78 [ 34.521617] __kasan_slab_free+0x6c/0x98 [ 34.521831] kfree+0x214/0x3c8 [ 34.522208] kmalloc_uaf_memset+0x11c/0x310 [ 34.522686] kunit_try_run_case+0x14c/0x3d0 [ 34.522990] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 34.523757] kthread+0x318/0x618 [ 34.524689] ret_from_fork+0x10/0x20 [ 34.525314] [ 34.525590] The buggy address belongs to the object at fff00000c5d89c00 [ 34.525590] which belongs to the cache kmalloc-64 of size 64 [ 34.526081] The buggy address is located 0 bytes inside of [ 34.526081] freed 64-byte region [fff00000c5d89c00, fff00000c5d89c40) [ 34.526299] [ 34.526373] The buggy address belongs to the physical page: [ 34.527396] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105d89 [ 34.528268] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 34.528459] page_type: f5(slab) [ 34.528583] raw: 0bfffe0000000000 fff00000c00018c0 dead000000000122 0000000000000000 [ 34.528746] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 34.529506] page dumped because: kasan: bad access detected [ 34.529867] [ 34.530163] Memory state around the buggy address: [ 34.530320] fff00000c5d89b00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.530464] fff00000c5d89b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.530606] >fff00000c5d89c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.530728] ^ [ 34.530815] fff00000c5d89c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.531032] fff00000c5d89d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.531230] ==================================================================
[ 22.197388] ================================================================== [ 22.198426] BUG: KASAN: slab-use-after-free in kmalloc_uaf_memset+0x1a3/0x360 [ 22.199386] Write of size 33 at addr ffff88810305ca80 by task kunit_try_catch/207 [ 22.200379] [ 22.200600] CPU: 0 UID: 0 PID: 207 Comm: kunit_try_catch Tainted: G B N 6.14.0-rc7-next-20250319 #1 PREEMPT(voluntary) [ 22.200769] Tainted: [B]=BAD_PAGE, [N]=TEST [ 22.200809] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 22.200867] Call Trace: [ 22.200956] <TASK> [ 22.201023] dump_stack_lvl+0x73/0xb0 [ 22.201132] print_report+0xd1/0x660 [ 22.201204] ? __virt_addr_valid+0x1db/0x2d0 [ 22.201324] ? kasan_complete_mode_report_info+0x64/0x200 [ 22.201397] kasan_report+0x104/0x140 [ 22.201638] ? kmalloc_uaf_memset+0x1a3/0x360 [ 22.201916] ? kmalloc_uaf_memset+0x1a3/0x360 [ 22.202062] kasan_check_range+0x10c/0x1c0 [ 22.202188] __asan_memset+0x27/0x50 [ 22.202256] kmalloc_uaf_memset+0x1a3/0x360 [ 22.202314] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 22.202354] ? __pfx_kmalloc_uaf_memset+0x10/0x10 [ 22.202394] kunit_try_run_case+0x1b2/0x490 [ 22.202434] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.202465] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 22.202497] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 22.202529] ? __kthread_parkme+0x82/0x160 [ 22.202561] ? preempt_count_sub+0x50/0x80 [ 22.202597] ? __pfx_kunit_try_run_case+0x10/0x10 [ 22.202631] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.202664] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 22.202773] kthread+0x323/0x710 [ 22.202864] ? trace_preempt_on+0x20/0xc0 [ 22.202908] ? __pfx_kthread+0x10/0x10 [ 22.202940] ? _raw_spin_unlock_irq+0x47/0x80 [ 22.202971] ? calculate_sigpending+0x7b/0xa0 [ 22.203003] ? __pfx_kthread+0x10/0x10 [ 22.203036] ret_from_fork+0x41/0x80 [ 22.203068] ? __pfx_kthread+0x10/0x10 [ 22.203099] ret_from_fork_asm+0x1a/0x30 [ 22.203172] </TASK> [ 22.203189] [ 22.218927] Allocated by task 207: [ 22.219407] kasan_save_stack+0x3d/0x60 [ 22.219830] kasan_save_track+0x18/0x40 [ 22.220291] kasan_save_alloc_info+0x3b/0x50 [ 22.220689] __kasan_kmalloc+0xb7/0xc0 [ 22.220963] __kmalloc_cache_noprof+0x183/0x410 [ 22.221651] kmalloc_uaf_memset+0xa9/0x360 [ 22.222293] kunit_try_run_case+0x1b2/0x490 [ 22.223004] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.223645] kthread+0x323/0x710 [ 22.224242] ret_from_fork+0x41/0x80 [ 22.224909] ret_from_fork_asm+0x1a/0x30 [ 22.225423] [ 22.225892] Freed by task 207: [ 22.226268] kasan_save_stack+0x3d/0x60 [ 22.226632] kasan_save_track+0x18/0x40 [ 22.227170] kasan_save_free_info+0x3f/0x60 [ 22.227861] __kasan_slab_free+0x56/0x70 [ 22.228360] kfree+0x222/0x3f0 [ 22.228939] kmalloc_uaf_memset+0x12b/0x360 [ 22.229411] kunit_try_run_case+0x1b2/0x490 [ 22.230100] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 22.231014] kthread+0x323/0x710 [ 22.231380] ret_from_fork+0x41/0x80 [ 22.232128] ret_from_fork_asm+0x1a/0x30 [ 22.232532] [ 22.233038] The buggy address belongs to the object at ffff88810305ca80 [ 22.233038] which belongs to the cache kmalloc-64 of size 64 [ 22.234196] The buggy address is located 0 bytes inside of [ 22.234196] freed 64-byte region [ffff88810305ca80, ffff88810305cac0) [ 22.235312] [ 22.235538] The buggy address belongs to the physical page: [ 22.236358] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10305c [ 22.237304] flags: 0x200000000000000(node=0|zone=2) [ 22.237959] page_type: f5(slab) [ 22.238392] raw: 0200000000000000 ffff8881000418c0 dead000000000122 0000000000000000 [ 22.239335] raw: 0000000000000000 0000000080200020 00000000f5000000 0000000000000000 [ 22.240303] page dumped because: kasan: bad access detected [ 22.241063] [ 22.241314] Memory state around the buggy address: [ 22.241670] ffff88810305c980: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 22.242072] ffff88810305ca00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 22.242724] >ffff88810305ca80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 22.243878] ^ [ 22.244352] ffff88810305cb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.245263] ffff88810305cb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 22.246194] ==================================================================