Date
June 7, 2025, 10:40 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 21.946065] ================================================================== [ 21.946429] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 21.946635] Write of size 1 at addr fff00000c6435f00 by task kunit_try_catch/148 [ 21.946859] [ 21.946946] CPU: 1 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT [ 21.947578] Tainted: [B]=BAD_PAGE, [N]=TEST [ 21.947695] Hardware name: linux,dummy-virt (DT) [ 21.947856] Call trace: [ 21.947957] show_stack+0x20/0x38 (C) [ 21.948100] dump_stack_lvl+0x8c/0xd0 [ 21.948218] print_report+0x118/0x608 [ 21.948330] kasan_report+0xdc/0x128 [ 21.948461] __asan_report_store1_noabort+0x20/0x30 [ 21.948601] kmalloc_big_oob_right+0x2a4/0x2f0 [ 21.948753] kunit_try_run_case+0x170/0x3f0 [ 21.948927] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.949114] kthread+0x328/0x630 [ 21.949277] ret_from_fork+0x10/0x20 [ 21.949416] [ 21.949460] Allocated by task 148: [ 21.949525] kasan_save_stack+0x3c/0x68 [ 21.949626] kasan_save_track+0x20/0x40 [ 21.949721] kasan_save_alloc_info+0x40/0x58 [ 21.949816] __kasan_kmalloc+0xd4/0xd8 [ 21.949905] __kmalloc_cache_noprof+0x16c/0x3c0 [ 21.950014] kmalloc_big_oob_right+0xb8/0x2f0 [ 21.950115] kunit_try_run_case+0x170/0x3f0 [ 21.950212] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 21.950338] kthread+0x328/0x630 [ 21.951180] ret_from_fork+0x10/0x20 [ 21.951340] [ 21.951430] The buggy address belongs to the object at fff00000c6434000 [ 21.951430] which belongs to the cache kmalloc-8k of size 8192 [ 21.951588] The buggy address is located 0 bytes to the right of [ 21.951588] allocated 7936-byte region [fff00000c6434000, fff00000c6435f00) [ 21.951859] [ 21.951940] The buggy address belongs to the physical page: [ 21.952141] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106430 [ 21.952731] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 21.952856] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 21.953060] page_type: f5(slab) [ 21.953251] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 21.953448] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 21.953669] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 21.953809] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 21.953977] head: 0bfffe0000000003 ffffc1ffc3190c01 00000000ffffffff 00000000ffffffff [ 21.954122] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 21.954224] page dumped because: kasan: bad access detected [ 21.954314] [ 21.954362] Memory state around the buggy address: [ 21.954457] fff00000c6435e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.954571] fff00000c6435e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 21.954680] >fff00000c6435f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.954774] ^ [ 21.954847] fff00000c6435f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.954951] fff00000c6436000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 21.955049] ==================================================================
[ 12.930033] ================================================================== [ 12.930539] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 12.931253] Write of size 1 at addr ffff8881027cdf00 by task kunit_try_catch/164 [ 12.932250] [ 12.932474] CPU: 1 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.15.2-rc1 #1 PREEMPT(voluntary) [ 12.932572] Tainted: [B]=BAD_PAGE, [N]=TEST [ 12.932887] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 12.932929] Call Trace: [ 12.932952] <TASK> [ 12.932983] dump_stack_lvl+0x73/0xb0 [ 12.933038] print_report+0xd1/0x650 [ 12.933072] ? __virt_addr_valid+0x1db/0x2d0 [ 12.933104] ? kmalloc_big_oob_right+0x316/0x370 [ 12.933135] ? kasan_complete_mode_report_info+0x2a/0x200 [ 12.933167] ? kmalloc_big_oob_right+0x316/0x370 [ 12.933205] kasan_report+0x141/0x180 [ 12.933246] ? kmalloc_big_oob_right+0x316/0x370 [ 12.933298] __asan_report_store1_noabort+0x1b/0x30 [ 12.933338] kmalloc_big_oob_right+0x316/0x370 [ 12.933381] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.933431] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 12.933474] kunit_try_run_case+0x1a5/0x480 [ 12.933515] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.933539] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 12.933586] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 12.933614] ? __kthread_parkme+0x82/0x180 [ 12.933637] ? preempt_count_sub+0x50/0x80 [ 12.933673] ? __pfx_kunit_try_run_case+0x10/0x10 [ 12.933702] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.933724] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 12.933745] kthread+0x337/0x6f0 [ 12.933762] ? trace_preempt_on+0x20/0xc0 [ 12.933786] ? __pfx_kthread+0x10/0x10 [ 12.933804] ? _raw_spin_unlock_irq+0x47/0x80 [ 12.933824] ? calculate_sigpending+0x7b/0xa0 [ 12.933845] ? __pfx_kthread+0x10/0x10 [ 12.933863] ret_from_fork+0x41/0x80 [ 12.933884] ? __pfx_kthread+0x10/0x10 [ 12.933902] ret_from_fork_asm+0x1a/0x30 [ 12.933931] </TASK> [ 12.933946] [ 12.943330] Allocated by task 164: [ 12.943570] kasan_save_stack+0x45/0x70 [ 12.943820] kasan_save_track+0x18/0x40 [ 12.944022] kasan_save_alloc_info+0x3b/0x50 [ 12.944364] __kasan_kmalloc+0xb7/0xc0 [ 12.944693] __kmalloc_cache_noprof+0x189/0x420 [ 12.945039] kmalloc_big_oob_right+0xa9/0x370 [ 12.945354] kunit_try_run_case+0x1a5/0x480 [ 12.945703] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 12.946088] kthread+0x337/0x6f0 [ 12.946316] ret_from_fork+0x41/0x80 [ 12.946625] ret_from_fork_asm+0x1a/0x30 [ 12.946835] [ 12.946998] The buggy address belongs to the object at ffff8881027cc000 [ 12.946998] which belongs to the cache kmalloc-8k of size 8192 [ 12.947506] The buggy address is located 0 bytes to the right of [ 12.947506] allocated 7936-byte region [ffff8881027cc000, ffff8881027cdf00) [ 12.948386] [ 12.948507] The buggy address belongs to the physical page: [ 12.949033] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1027c8 [ 12.949451] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 12.949753] flags: 0x200000000000040(head|node=0|zone=2) [ 12.950010] page_type: f5(slab) [ 12.950202] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.950797] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.951356] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 12.951952] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 12.952466] head: 0200000000000003 ffffea000409f201 00000000ffffffff 00000000ffffffff [ 12.953011] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 12.953326] page dumped because: kasan: bad access detected [ 12.953525] [ 12.953677] Memory state around the buggy address: [ 12.954032] ffff8881027cde00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.954462] ffff8881027cde80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 12.954902] >ffff8881027cdf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.955323] ^ [ 12.955523] ffff8881027cdf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.955837] ffff8881027ce000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 12.956249] ==================================================================