Date
June 24, 2025, 12:47 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.335955] ================================================================== [ 23.336289] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 23.336519] Read of size 1 at addr fff00000c77dc000 by task kunit_try_catch/150 [ 23.336658] [ 23.336740] CPU: 0 UID: 0 PID: 150 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT [ 23.337171] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.337240] Hardware name: linux,dummy-virt (DT) [ 23.337368] Call trace: [ 23.337715] show_stack+0x20/0x38 (C) [ 23.337845] dump_stack_lvl+0x8c/0xd0 [ 23.337966] print_report+0x118/0x608 [ 23.338094] kasan_report+0xdc/0x128 [ 23.338365] __asan_report_load1_noabort+0x20/0x30 [ 23.338702] kmalloc_large_uaf+0x2cc/0x2f8 [ 23.338824] kunit_try_run_case+0x170/0x3f0 [ 23.338948] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.339149] kthread+0x328/0x630 [ 23.339268] ret_from_fork+0x10/0x20 [ 23.339465] [ 23.339610] The buggy address belongs to the physical page: [ 23.339693] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077dc [ 23.339884] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 23.340043] raw: 0bfffe0000000000 ffffc1ffc31df808 fff00000da47ee00 0000000000000000 [ 23.340203] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 23.340313] page dumped because: kasan: bad access detected [ 23.340850] [ 23.340916] Memory state around the buggy address: [ 23.341207] fff00000c77dbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.341322] fff00000c77dbf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.341520] >fff00000c77dc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.341949] ^ [ 23.342030] fff00000c77dc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.342136] fff00000c77dc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 23.342230] ==================================================================
[ 11.108150] ================================================================== [ 11.108860] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 11.109150] Read of size 1 at addr ffff888102858000 by task kunit_try_catch/168 [ 11.109671] [ 11.109877] CPU: 1 UID: 0 PID: 168 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT(voluntary) [ 11.109984] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.110010] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.110053] Call Trace: [ 11.110082] <TASK> [ 11.110123] dump_stack_lvl+0x73/0xb0 [ 11.110186] print_report+0xd1/0x650 [ 11.110227] ? __virt_addr_valid+0x1db/0x2d0 [ 11.110275] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.110318] ? kasan_addr_to_slab+0x11/0xa0 [ 11.110480] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.110520] kasan_report+0x141/0x180 [ 11.110586] ? kmalloc_large_uaf+0x2f1/0x340 [ 11.110648] __asan_report_load1_noabort+0x18/0x20 [ 11.110693] kmalloc_large_uaf+0x2f1/0x340 [ 11.110737] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 11.110784] ? __schedule+0x10cc/0x2b60 [ 11.110834] ? __pfx_read_tsc+0x10/0x10 [ 11.110876] ? ktime_get_ts64+0x86/0x230 [ 11.110932] kunit_try_run_case+0x1a5/0x480 [ 11.110975] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.111009] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.111048] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.111089] ? __kthread_parkme+0x82/0x180 [ 11.111128] ? preempt_count_sub+0x50/0x80 [ 11.111170] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.111211] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.111256] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.111325] kthread+0x337/0x6f0 [ 11.111371] ? trace_preempt_on+0x20/0xc0 [ 11.111519] ? __pfx_kthread+0x10/0x10 [ 11.111589] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.111635] ? calculate_sigpending+0x7b/0xa0 [ 11.111669] ? __pfx_kthread+0x10/0x10 [ 11.111693] ret_from_fork+0x41/0x80 [ 11.111720] ? __pfx_kthread+0x10/0x10 [ 11.111743] ret_from_fork_asm+0x1a/0x30 [ 11.111782] </TASK> [ 11.111796] [ 11.122455] The buggy address belongs to the physical page: [ 11.122929] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102858 [ 11.123232] flags: 0x200000000000000(node=0|zone=2) [ 11.123642] raw: 0200000000000000 ffffea00040a1708 ffff88815b139a80 0000000000000000 [ 11.124164] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 11.124872] page dumped because: kasan: bad access detected [ 11.125237] [ 11.125749] Memory state around the buggy address: [ 11.126068] ffff888102857f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.126460] ffff888102857f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.127012] >ffff888102858000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.127611] ^ [ 11.127920] ffff888102858080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.128243] ffff888102858100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 11.128666] ==================================================================