Date
June 2, 2025, 2:10 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.196596] ================================================================== [ 19.197272] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2d8/0x300 [ 19.198063] Read of size 1 at addr fff00000c6b40000 by task kunit_try_catch/135 [ 19.198725] [ 19.199550] CPU: 1 UID: 0 PID: 135 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 19.199934] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.199969] Hardware name: linux,dummy-virt (DT) [ 19.200009] Call trace: [ 19.200035] dump_backtrace+0x9c/0x128 [ 19.200100] show_stack+0x20/0x38 [ 19.200140] dump_stack_lvl+0x8c/0xd0 [ 19.200185] print_report+0x118/0x5f0 [ 19.200227] kasan_report+0xdc/0x128 [ 19.200298] __asan_report_load1_noabort+0x20/0x30 [ 19.200345] kmalloc_large_uaf+0x2d8/0x300 [ 19.200391] kunit_try_run_case+0x170/0x3f0 [ 19.200435] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.200483] kthread+0x24c/0x2d0 [ 19.200525] ret_from_fork+0x10/0x20 [ 19.200572] [ 19.205377] The buggy address belongs to the physical page: [ 19.205856] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106b40 [ 19.206691] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.207987] raw: 0bfffe0000000000 fff00000da521200 fff00000da521200 0000000000000000 [ 19.208620] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 19.209235] page dumped because: kasan: bad access detected [ 19.209747] [ 19.210422] Memory state around the buggy address: [ 19.210774] fff00000c6b3ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.211662] fff00000c6b3ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.212457] >fff00000c6b40000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.213006] ^ [ 19.213508] fff00000c6b40080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.214264] fff00000c6b40100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 19.214977] ==================================================================
[ 11.499360] ================================================================== [ 11.499796] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f3/0x340 [ 11.500545] Read of size 1 at addr ffff888102514000 by task kunit_try_catch/153 [ 11.500794] [ 11.501131] CPU: 1 UID: 0 PID: 153 Comm: kunit_try_catch Tainted: G B N 6.12.32-rc1 #1 [ 11.501220] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.501243] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.501282] Call Trace: [ 11.501308] <TASK> [ 11.501339] dump_stack_lvl+0x73/0xb0 [ 11.501390] print_report+0xd1/0x640 [ 11.501765] ? __virt_addr_valid+0x1db/0x2d0 [ 11.501811] ? kmalloc_large_uaf+0x2f3/0x340 [ 11.501848] ? kasan_addr_to_slab+0x11/0xa0 [ 11.501873] ? kmalloc_large_uaf+0x2f3/0x340 [ 11.501907] kasan_report+0x140/0x180 [ 11.501931] ? kmalloc_large_uaf+0x2f3/0x340 [ 11.501957] __asan_report_load1_noabort+0x18/0x20 [ 11.501977] kmalloc_large_uaf+0x2f3/0x340 [ 11.501998] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.502019] ? __schedule+0xc49/0x27a0 [ 11.502041] ? __pfx_read_tsc+0x10/0x10 [ 11.502085] ? ktime_get_ts64+0x84/0x230 [ 11.502155] kunit_try_run_case+0x1a6/0x480 [ 11.502190] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.502222] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 11.502247] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.502270] ? __kthread_parkme+0x82/0x160 [ 11.502290] ? preempt_count_sub+0x50/0x80 [ 11.502312] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.502331] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.502356] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.502380] kthread+0x257/0x310 [ 11.502397] ? __pfx_kthread+0x10/0x10 [ 11.502416] ret_from_fork+0x41/0x80 [ 11.502434] ? __pfx_kthread+0x10/0x10 [ 11.502452] ret_from_fork_asm+0x1a/0x30 [ 11.502481] </TASK> [ 11.502494] [ 11.511193] The buggy address belongs to the physical page: [ 11.511452] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102514 [ 11.511993] flags: 0x200000000000000(node=0|zone=2) [ 11.512752] raw: 0200000000000000 ffffea0004094608 ffff88815b13f000 0000000000000000 [ 11.513418] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.513727] page dumped because: kasan: bad access detected [ 11.514320] [ 11.514515] Memory state around the buggy address: [ 11.514768] ffff888102513f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.515034] ffff888102513f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.515689] >ffff888102514000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.516527] ^ [ 11.516820] ffff888102514080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.517423] ffff888102514100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.517867] ==================================================================