Hay
Date
July 11, 2025, 11:09 p.m.

Environment
qemu-arm64
qemu-x86_64

[   16.370098] ==================================================================
[   16.370157] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0
[   16.370205] Write of size 1 at addr fff00000c77d9f00 by task kunit_try_catch/145
[   16.370252] 
[   16.370556] CPU: 0 UID: 0 PID: 145 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT 
[   16.370650] Tainted: [B]=BAD_PAGE, [N]=TEST
[   16.370676] Hardware name: linux,dummy-virt (DT)
[   16.370738] Call trace:
[   16.370833]  show_stack+0x20/0x38 (C)
[   16.371438]  dump_stack_lvl+0x8c/0xd0
[   16.371518]  print_report+0x118/0x608
[   16.371592]  kasan_report+0xdc/0x128
[   16.371638]  __asan_report_store1_noabort+0x20/0x30
[   16.371794]  kmalloc_big_oob_right+0x2a4/0x2f0
[   16.372043]  kunit_try_run_case+0x170/0x3f0
[   16.372090]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   16.372141]  kthread+0x328/0x630
[   16.372182]  ret_from_fork+0x10/0x20
[   16.372228] 
[   16.372247] Allocated by task 145:
[   16.372274]  kasan_save_stack+0x3c/0x68
[   16.372314]  kasan_save_track+0x20/0x40
[   16.372358]  kasan_save_alloc_info+0x40/0x58
[   16.372541]  __kasan_kmalloc+0xd4/0xd8
[   16.372718]  __kmalloc_cache_noprof+0x16c/0x3c0
[   16.372815]  kmalloc_big_oob_right+0xb8/0x2f0
[   16.372862]  kunit_try_run_case+0x170/0x3f0
[   16.372938]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   16.373046]  kthread+0x328/0x630
[   16.373151]  ret_from_fork+0x10/0x20
[   16.373198] 
[   16.373222] The buggy address belongs to the object at fff00000c77d8000
[   16.373222]  which belongs to the cache kmalloc-8k of size 8192
[   16.373405] The buggy address is located 0 bytes to the right of
[   16.373405]  allocated 7936-byte region [fff00000c77d8000, fff00000c77d9f00)
[   16.373521] 
[   16.373621] The buggy address belongs to the physical page:
[   16.373685] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1077d8
[   16.373775] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   16.373836] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff)
[   16.374658] page_type: f5(slab)
[   16.374782] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000
[   16.375149] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
[   16.375394] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000
[   16.375445] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
[   16.375529] head: 0bfffe0000000003 ffffc1ffc31df601 00000000ffffffff 00000000ffffffff
[   16.375800] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
[   16.375911] page dumped because: kasan: bad access detected
[   16.375975] 
[   16.376016] Memory state around the buggy address:
[   16.376048]  fff00000c77d9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   16.376090]  fff00000c77d9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   16.376131] >fff00000c77d9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.376168]                    ^
[   16.376195]  fff00000c77d9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.376291]  fff00000c77da000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   16.376372] ==================================================================

[   11.849838] ==================================================================
[   11.850749] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370
[   11.851014] Write of size 1 at addr ffff888102a75f00 by task kunit_try_catch/161
[   11.852208] 
[   11.852587] CPU: 0 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT(voluntary) 
[   11.852634] Tainted: [B]=BAD_PAGE, [N]=TEST
[   11.852794] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.852820] Call Trace:
[   11.852834]  <TASK>
[   11.852891]  dump_stack_lvl+0x73/0xb0
[   11.852939]  print_report+0xd1/0x650
[   11.852962]  ? __virt_addr_valid+0x1db/0x2d0
[   11.852986]  ? kmalloc_big_oob_right+0x316/0x370
[   11.853008]  ? kasan_complete_mode_report_info+0x2a/0x200
[   11.853045]  ? kmalloc_big_oob_right+0x316/0x370
[   11.853067]  kasan_report+0x141/0x180
[   11.853088]  ? kmalloc_big_oob_right+0x316/0x370
[   11.853115]  __asan_report_store1_noabort+0x1b/0x30
[   11.853140]  kmalloc_big_oob_right+0x316/0x370
[   11.853163]  ? __pfx_kmalloc_big_oob_right+0x10/0x10
[   11.853186]  ? __schedule+0x10cc/0x2b60
[   11.853208]  ? __pfx_read_tsc+0x10/0x10
[   11.853228]  ? ktime_get_ts64+0x86/0x230
[   11.853253]  kunit_try_run_case+0x1a5/0x480
[   11.853277]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.853299]  ? _raw_spin_lock_irqsave+0xa1/0x100
[   11.853322]  ? _raw_spin_unlock_irqrestore+0x5f/0x90
[   11.853345]  ? __kthread_parkme+0x82/0x180
[   11.853365]  ? preempt_count_sub+0x50/0x80
[   11.853389]  ? __pfx_kunit_try_run_case+0x10/0x10
[   11.853412]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.853436]  ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
[   11.853461]  kthread+0x337/0x6f0
[   11.853479]  ? trace_preempt_on+0x20/0xc0
[   11.853502]  ? __pfx_kthread+0x10/0x10
[   11.853521]  ? _raw_spin_unlock_irq+0x47/0x80
[   11.853542]  ? calculate_sigpending+0x7b/0xa0
[   11.853565]  ? __pfx_kthread+0x10/0x10
[   11.853586]  ret_from_fork+0x116/0x1d0
[   11.853604]  ? __pfx_kthread+0x10/0x10
[   11.853624]  ret_from_fork_asm+0x1a/0x30
[   11.853657]  </TASK>
[   11.853666] 
[   11.868561] Allocated by task 161:
[   11.868898]  kasan_save_stack+0x45/0x70
[   11.869297]  kasan_save_track+0x18/0x40
[   11.869434]  kasan_save_alloc_info+0x3b/0x50
[   11.869582]  __kasan_kmalloc+0xb7/0xc0
[   11.869712]  __kmalloc_cache_noprof+0x189/0x420
[   11.870161]  kmalloc_big_oob_right+0xa9/0x370
[   11.870712]  kunit_try_run_case+0x1a5/0x480
[   11.871259]  kunit_generic_run_threadfn_adapter+0x85/0xf0
[   11.871813]  kthread+0x337/0x6f0
[   11.872274]  ret_from_fork+0x116/0x1d0
[   11.872649]  ret_from_fork_asm+0x1a/0x30
[   11.873068] 
[   11.873357] The buggy address belongs to the object at ffff888102a74000
[   11.873357]  which belongs to the cache kmalloc-8k of size 8192
[   11.873718] The buggy address is located 0 bytes to the right of
[   11.873718]  allocated 7936-byte region [ffff888102a74000, ffff888102a75f00)
[   11.875100] 
[   11.875270] The buggy address belongs to the physical page:
[   11.875765] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a70
[   11.876339] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[   11.876567] flags: 0x200000000000040(head|node=0|zone=2)
[   11.876743] page_type: f5(slab)
[   11.876864] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000
[   11.877493] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
[   11.878004] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000
[   11.878655] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000
[   11.879271] head: 0200000000000003 ffffea00040a9c01 00000000ffffffff 00000000ffffffff
[   11.879849] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
[   11.880158] page dumped because: kasan: bad access detected
[   11.880683] 
[   11.880881] Memory state around the buggy address:
[   11.881402]  ffff888102a75e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   11.881974]  ffff888102a75e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   11.882483] >ffff888102a75f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.882703]                    ^
[   11.882844]  ffff888102a75f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.883594]  ffff888102a76000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   11.884439] ==================================================================