Date
June 2, 2025, 2:13 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.033636] ================================================================== [ 18.034626] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 18.034982] Read of size 1 at addr fff00000c6068000 by task kunit_try_catch/138 [ 18.035310] [ 18.035463] CPU: 0 UID: 0 PID: 138 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 18.035552] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.035581] Hardware name: linux,dummy-virt (DT) [ 18.035616] Call trace: [ 18.035641] show_stack+0x20/0x38 (C) [ 18.035695] dump_stack_lvl+0x8c/0xd0 [ 18.035745] print_report+0x118/0x608 [ 18.035792] kasan_report+0xdc/0x128 [ 18.035838] __asan_report_load1_noabort+0x20/0x30 [ 18.035885] kmalloc_large_uaf+0x2cc/0x2f8 [ 18.035931] kunit_try_run_case+0x170/0x3f0 [ 18.035978] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.036029] kthread+0x318/0x620 [ 18.036075] ret_from_fork+0x10/0x20 [ 18.036124] [ 18.040532] The buggy address belongs to the physical page: [ 18.041260] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106068 [ 18.041914] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 18.042687] raw: 0bfffe0000000000 ffffc1ffc3181b08 fff00000da4b1040 0000000000000000 [ 18.043287] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 18.043795] page dumped because: kasan: bad access detected [ 18.044327] [ 18.044572] Memory state around the buggy address: [ 18.045006] fff00000c6067f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.045592] fff00000c6067f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.046244] >fff00000c6068000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.046883] ^ [ 18.047319] fff00000c6068080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.047889] fff00000c6068100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 18.048442] ==================================================================
[ 12.245549] ================================================================== [ 12.246465] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f3/0x340 [ 12.246743] Read of size 1 at addr ffff888102ac4000 by task kunit_try_catch/156 [ 12.247197] [ 12.247310] CPU: 0 UID: 0 PID: 156 Comm: kunit_try_catch Tainted: G B N 6.14.10-rc1 #1 [ 12.247477] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.247492] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.247513] Call Trace: [ 12.247523] <TASK> [ 12.247547] dump_stack_lvl+0x73/0xb0 [ 12.247576] print_report+0xd1/0x650 [ 12.247600] ? __virt_addr_valid+0x1db/0x2d0 [ 12.247681] ? kmalloc_large_uaf+0x2f3/0x340 [ 12.247705] ? kasan_addr_to_slab+0x11/0xa0 [ 12.247727] ? kmalloc_large_uaf+0x2f3/0x340 [ 12.247749] kasan_report+0x140/0x180 [ 12.247774] ? kmalloc_large_uaf+0x2f3/0x340 [ 12.247801] __asan_report_load1_noabort+0x18/0x20 [ 12.247827] kmalloc_large_uaf+0x2f3/0x340 [ 12.247859] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 12.247882] ? __schedule+0xce8/0x2840 [ 12.247908] ? __pfx_read_tsc+0x10/0x10 [ 12.247942] ? ktime_get_ts64+0x86/0x230 [ 12.247970] kunit_try_run_case+0x1a6/0x480 [ 12.247995] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.248027] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 12.248053] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.248079] ? __kthread_parkme+0x82/0x160 [ 12.248102] ? preempt_count_sub+0x50/0x80 [ 12.248129] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.248153] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.248181] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.248209] kthread+0x324/0x6e0 [ 12.248232] ? trace_preempt_on+0x20/0xc0 [ 12.248257] ? __pfx_kthread+0x10/0x10 [ 12.248282] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.248306] ? calculate_sigpending+0x7b/0xa0 [ 12.248329] ? __pfx_kthread+0x10/0x10 [ 12.248354] ret_from_fork+0x41/0x80 [ 12.248375] ? __pfx_kthread+0x10/0x10 [ 12.248399] ret_from_fork_asm+0x1a/0x30 [ 12.248432] </TASK> [ 12.248443] [ 12.256045] The buggy address belongs to the physical page: [ 12.256277] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102ac4 [ 12.256810] flags: 0x200000000000000(node=0|zone=2) [ 12.257074] raw: 0200000000000000 ffffea00040ab208 ffff88815b03ef40 0000000000000000 [ 12.257394] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 12.257848] page dumped because: kasan: bad access detected [ 12.258292] [ 12.258395] Memory state around the buggy address: [ 12.258553] ffff888102ac3f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.258969] ffff888102ac3f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.259270] >ffff888102ac4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.259551] ^ [ 12.259795] ffff888102ac4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.260113] ffff888102ac4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 12.260415] ==================================================================