Date
May 13, 2025, 12:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.975838] ================================================================== [ 18.976276] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 18.976485] Write of size 1 at addr fff00000c6595f00 by task kunit_try_catch/144 [ 18.976730] [ 18.976807] CPU: 1 UID: 0 PID: 144 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT [ 18.976911] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.976942] Hardware name: linux,dummy-virt (DT) [ 18.976995] Call trace: [ 18.977027] show_stack+0x20/0x38 (C) [ 18.977090] dump_stack_lvl+0x8c/0xd0 [ 18.977144] print_report+0x118/0x608 [ 18.977194] kasan_report+0xdc/0x128 [ 18.977244] __asan_report_store1_noabort+0x20/0x30 [ 18.977300] kmalloc_big_oob_right+0x2a4/0x2f0 [ 18.977355] kunit_try_run_case+0x170/0x3f0 [ 18.977408] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.977464] kthread+0x328/0x630 [ 18.977516] ret_from_fork+0x10/0x20 [ 18.977571] [ 18.977593] Allocated by task 144: [ 18.977626] kasan_save_stack+0x3c/0x68 [ 18.977675] kasan_save_track+0x20/0x40 [ 18.977718] kasan_save_alloc_info+0x40/0x58 [ 18.977761] __kasan_kmalloc+0xd4/0xd8 [ 18.977801] __kmalloc_cache_noprof+0x15c/0x3c0 [ 18.978480] kmalloc_big_oob_right+0xb8/0x2f0 [ 18.978554] kunit_try_run_case+0x170/0x3f0 [ 18.978802] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.978857] kthread+0x328/0x630 [ 18.979354] ret_from_fork+0x10/0x20 [ 18.979455] [ 18.979574] The buggy address belongs to the object at fff00000c6594000 [ 18.979574] which belongs to the cache kmalloc-8k of size 8192 [ 18.979686] The buggy address is located 0 bytes to the right of [ 18.979686] allocated 7936-byte region [fff00000c6594000, fff00000c6595f00) [ 18.979898] [ 18.980045] The buggy address belongs to the physical page: [ 18.980268] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106590 [ 18.980476] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.980630] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.980700] page_type: f5(slab) [ 18.980753] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 18.980811] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 18.980869] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 18.981567] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 18.981647] head: 0bfffe0000000003 ffffc1ffc3196401 00000000ffffffff 00000000ffffffff [ 18.982137] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 18.982315] page dumped because: kasan: bad access detected [ 18.982357] [ 18.982382] Memory state around the buggy address: [ 18.982501] fff00000c6595e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.982578] fff00000c6595e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.982624] >fff00000c6595f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.982665] ^ [ 18.982699] fff00000c6595f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.982793] fff00000c6596000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.982854] ==================================================================
[ 10.541138] ================================================================== [ 10.541655] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 10.541936] Write of size 1 at addr ffff8881038e9f00 by task kunit_try_catch/161 [ 10.542291] [ 10.542480] CPU: 0 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT(voluntary) [ 10.542596] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.542608] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.542639] Call Trace: [ 10.542652] <TASK> [ 10.542669] dump_stack_lvl+0x73/0xb0 [ 10.542699] print_report+0xd1/0x650 [ 10.542722] ? __virt_addr_valid+0x1db/0x2d0 [ 10.542746] ? kmalloc_big_oob_right+0x316/0x370 [ 10.542767] ? kasan_complete_mode_report_info+0x2a/0x200 [ 10.542789] ? kmalloc_big_oob_right+0x316/0x370 [ 10.542812] kasan_report+0x141/0x180 [ 10.542834] ? kmalloc_big_oob_right+0x316/0x370 [ 10.542861] __asan_report_store1_noabort+0x1b/0x30 [ 10.542882] kmalloc_big_oob_right+0x316/0x370 [ 10.542904] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 10.542927] ? __schedule+0x10cc/0x2b60 [ 10.542948] ? __pfx_read_tsc+0x10/0x10 [ 10.542969] ? ktime_get_ts64+0x86/0x230 [ 10.542994] kunit_try_run_case+0x1a5/0x480 [ 10.543018] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.543039] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.543061] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.543083] ? __kthread_parkme+0x82/0x180 [ 10.543103] ? preempt_count_sub+0x50/0x80 [ 10.543127] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.543150] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.543172] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.543195] kthread+0x337/0x6f0 [ 10.543214] ? trace_preempt_on+0x20/0xc0 [ 10.543237] ? __pfx_kthread+0x10/0x10 [ 10.543257] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.543277] ? calculate_sigpending+0x7b/0xa0 [ 10.543301] ? __pfx_kthread+0x10/0x10 [ 10.543322] ret_from_fork+0x116/0x1d0 [ 10.543340] ? __pfx_kthread+0x10/0x10 [ 10.543361] ret_from_fork_asm+0x1a/0x30 [ 10.543392] </TASK> [ 10.543403] [ 10.553504] Allocated by task 161: [ 10.553778] kasan_save_stack+0x45/0x70 [ 10.554027] kasan_save_track+0x18/0x40 [ 10.554239] kasan_save_alloc_info+0x3b/0x50 [ 10.554408] __kasan_kmalloc+0xb7/0xc0 [ 10.554551] __kmalloc_cache_noprof+0x189/0x420 [ 10.555063] kmalloc_big_oob_right+0xa9/0x370 [ 10.555293] kunit_try_run_case+0x1a5/0x480 [ 10.555516] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.555901] kthread+0x337/0x6f0 [ 10.556031] ret_from_fork+0x116/0x1d0 [ 10.556215] ret_from_fork_asm+0x1a/0x30 [ 10.556446] [ 10.556634] The buggy address belongs to the object at ffff8881038e8000 [ 10.556634] which belongs to the cache kmalloc-8k of size 8192 [ 10.557454] The buggy address is located 0 bytes to the right of [ 10.557454] allocated 7936-byte region [ffff8881038e8000, ffff8881038e9f00) [ 10.558265] [ 10.558395] The buggy address belongs to the physical page: [ 10.558750] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1038e8 [ 10.559084] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 10.559520] flags: 0x200000000000040(head|node=0|zone=2) [ 10.559917] page_type: f5(slab) [ 10.560103] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 10.560504] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 10.561020] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 10.561383] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 10.561890] head: 0200000000000003 ffffea00040e3a01 00000000ffffffff 00000000ffffffff [ 10.562851] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 10.563152] page dumped because: kasan: bad access detected [ 10.563682] [ 10.563915] Memory state around the buggy address: [ 10.564103] ffff8881038e9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 10.564493] ffff8881038e9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 10.564921] >ffff8881038e9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.565204] ^ [ 10.565417] ffff8881038e9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.565821] ffff8881038ea000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.566199] ==================================================================