Date
May 15, 2025, 10:38 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.801723] ================================================================== [ 17.801868] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2cc/0x2f8 [ 17.802117] Read of size 1 at addr fff00000c67ec000 by task kunit_try_catch/148 [ 17.802275] [ 17.802305] CPU: 1 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT [ 17.802471] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.802543] Hardware name: linux,dummy-virt (DT) [ 17.802579] Call trace: [ 17.802678] show_stack+0x20/0x38 (C) [ 17.802763] dump_stack_lvl+0x8c/0xd0 [ 17.802808] print_report+0x118/0x608 [ 17.802872] kasan_report+0xdc/0x128 [ 17.802916] __asan_report_load1_noabort+0x20/0x30 [ 17.802965] kmalloc_large_uaf+0x2cc/0x2f8 [ 17.803008] kunit_try_run_case+0x170/0x3f0 [ 17.803317] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.803382] kthread+0x328/0x630 [ 17.803586] ret_from_fork+0x10/0x20 [ 17.803637] [ 17.803676] The buggy address belongs to the physical page: [ 17.803705] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1067ec [ 17.803776] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 17.803898] raw: 0bfffe0000000000 fff00000da478c00 fff00000da478c00 0000000000000000 [ 17.804023] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 17.804133] page dumped because: kasan: bad access detected [ 17.804206] [ 17.804224] Memory state around the buggy address: [ 17.804254] fff00000c67ebf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.804304] fff00000c67ebf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.804448] >fff00000c67ec000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.804541] ^ [ 17.804596] fff00000c67ec080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.804635] fff00000c67ec100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 17.804671] ==================================================================
[ 13.470442] ================================================================== [ 13.470975] BUG: KASAN: use-after-free in kmalloc_large_uaf+0x2f1/0x340 [ 13.471275] Read of size 1 at addr ffff88810298c000 by task kunit_try_catch/166 [ 13.471607] [ 13.471753] CPU: 0 UID: 0 PID: 166 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250515 #1 PREEMPT(voluntary) [ 13.471833] Tainted: [B]=BAD_PAGE, [N]=TEST [ 13.471852] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 13.471885] Call Trace: [ 13.471908] <TASK> [ 13.471941] dump_stack_lvl+0x73/0xb0 [ 13.472000] print_report+0xd1/0x650 [ 13.472045] ? __virt_addr_valid+0x1db/0x2d0 [ 13.472092] ? kmalloc_large_uaf+0x2f1/0x340 [ 13.472120] ? kasan_addr_to_slab+0x11/0xa0 [ 13.472141] ? kmalloc_large_uaf+0x2f1/0x340 [ 13.472161] kasan_report+0x141/0x180 [ 13.472182] ? kmalloc_large_uaf+0x2f1/0x340 [ 13.472207] __asan_report_load1_noabort+0x18/0x20 [ 13.472282] kmalloc_large_uaf+0x2f1/0x340 [ 13.472314] ? __pfx_kmalloc_large_uaf+0x10/0x10 [ 13.472347] ? __schedule+0x10cc/0x2b60 [ 13.472383] ? __pfx_read_tsc+0x10/0x10 [ 13.472420] ? ktime_get_ts64+0x86/0x230 [ 13.472463] kunit_try_run_case+0x1a5/0x480 [ 13.472923] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.472971] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 13.473008] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 13.473031] ? __kthread_parkme+0x82/0x180 [ 13.473053] ? preempt_count_sub+0x50/0x80 [ 13.473077] ? __pfx_kunit_try_run_case+0x10/0x10 [ 13.473099] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 13.473121] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 13.473142] kthread+0x337/0x6f0 [ 13.473160] ? trace_preempt_on+0x20/0xc0 [ 13.473183] ? __pfx_kthread+0x10/0x10 [ 13.473202] ? _raw_spin_unlock_irq+0x47/0x80 [ 13.473243] ? calculate_sigpending+0x7b/0xa0 [ 13.473271] ? __pfx_kthread+0x10/0x10 [ 13.473292] ret_from_fork+0x116/0x1d0 [ 13.473311] ? __pfx_kthread+0x10/0x10 [ 13.473331] ret_from_fork_asm+0x1a/0x30 [ 13.473362] </TASK> [ 13.473374] [ 13.484388] The buggy address belongs to the physical page: [ 13.485195] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10298c [ 13.485915] flags: 0x200000000000000(node=0|zone=2) [ 13.486286] raw: 0200000000000000 ffffea00040a6408 ffff88815b039f80 0000000000000000 [ 13.486960] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 13.487408] page dumped because: kasan: bad access detected [ 13.487900] [ 13.488064] Memory state around the buggy address: [ 13.488257] ffff88810298bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.488669] ffff88810298bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 13.489050] >ffff88810298c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.489726] ^ [ 13.489894] ffff88810298c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.490237] ffff88810298c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 13.490679] ==================================================================