Date
July 8, 2025, 4:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 17.616542] ================================================================== [ 17.616616] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 17.616707] Write of size 1 at addr fff00000c7821f00 by task kunit_try_catch/146 [ 17.616830] [ 17.616860] CPU: 1 UID: 0 PID: 146 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT [ 17.616939] Tainted: [B]=BAD_PAGE, [N]=TEST [ 17.617149] Hardware name: linux,dummy-virt (DT) [ 17.617426] Call trace: [ 17.617468] show_stack+0x20/0x38 (C) [ 17.617573] dump_stack_lvl+0x8c/0xd0 [ 17.617622] print_report+0x118/0x608 [ 17.617665] kasan_report+0xdc/0x128 [ 17.617708] __asan_report_store1_noabort+0x20/0x30 [ 17.617756] kmalloc_big_oob_right+0x2a4/0x2f0 [ 17.617813] kunit_try_run_case+0x170/0x3f0 [ 17.617861] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.618367] kthread+0x328/0x630 [ 17.618529] ret_from_fork+0x10/0x20 [ 17.618577] [ 17.618597] Allocated by task 146: [ 17.618624] kasan_save_stack+0x3c/0x68 [ 17.618919] kasan_save_track+0x20/0x40 [ 17.619040] kasan_save_alloc_info+0x40/0x58 [ 17.619083] __kasan_kmalloc+0xd4/0xd8 [ 17.619119] __kmalloc_cache_noprof+0x16c/0x3c0 [ 17.619171] kmalloc_big_oob_right+0xb8/0x2f0 [ 17.619233] kunit_try_run_case+0x170/0x3f0 [ 17.619278] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 17.619357] kthread+0x328/0x630 [ 17.619395] ret_from_fork+0x10/0x20 [ 17.619430] [ 17.619700] The buggy address belongs to the object at fff00000c7820000 [ 17.619700] which belongs to the cache kmalloc-8k of size 8192 [ 17.619769] The buggy address is located 0 bytes to the right of [ 17.619769] allocated 7936-byte region [fff00000c7820000, fff00000c7821f00) [ 17.619949] [ 17.620030] The buggy address belongs to the physical page: [ 17.620117] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107820 [ 17.620179] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 17.620441] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 17.620627] page_type: f5(slab) [ 17.620669] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 17.620718] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 17.620787] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 17.620834] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 17.620881] head: 0bfffe0000000003 ffffc1ffc31e0801 00000000ffffffff 00000000ffffffff [ 17.621218] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 17.621260] page dumped because: kasan: bad access detected [ 17.621312] [ 17.621341] Memory state around the buggy address: [ 17.621392] fff00000c7821e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.621580] fff00000c7821e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 17.621622] >fff00000c7821f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.621671] ^ [ 17.621698] fff00000c7821f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.621737] fff00000c7822000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 17.621773] ==================================================================
[ 10.647412] ================================================================== [ 10.648291] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 10.648542] Write of size 1 at addr ffff888102de9f00 by task kunit_try_catch/164 [ 10.649246] [ 10.649451] CPU: 0 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.15.6-rc1 #1 PREEMPT(voluntary) [ 10.649498] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.649528] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.649551] Call Trace: [ 10.649576] <TASK> [ 10.649591] dump_stack_lvl+0x73/0xb0 [ 10.649618] print_report+0xd1/0x650 [ 10.649641] ? __virt_addr_valid+0x1db/0x2d0 [ 10.649664] ? kmalloc_big_oob_right+0x316/0x370 [ 10.649687] ? kasan_complete_mode_report_info+0x2a/0x200 [ 10.649710] ? kmalloc_big_oob_right+0x316/0x370 [ 10.649734] kasan_report+0x141/0x180 [ 10.649756] ? kmalloc_big_oob_right+0x316/0x370 [ 10.649784] __asan_report_store1_noabort+0x1b/0x30 [ 10.649806] kmalloc_big_oob_right+0x316/0x370 [ 10.649831] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 10.649855] ? __schedule+0x10cc/0x2b60 [ 10.649891] ? __pfx_read_tsc+0x10/0x10 [ 10.649912] ? ktime_get_ts64+0x86/0x230 [ 10.649937] kunit_try_run_case+0x1a5/0x480 [ 10.649959] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.649978] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.650002] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.650026] ? __kthread_parkme+0x82/0x180 [ 10.650047] ? preempt_count_sub+0x50/0x80 [ 10.650073] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.650093] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.650117] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.650141] kthread+0x337/0x6f0 [ 10.650157] ? trace_preempt_on+0x20/0xc0 [ 10.650181] ? __pfx_kthread+0x10/0x10 [ 10.650199] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.650222] ? calculate_sigpending+0x7b/0xa0 [ 10.650243] ? __pfx_kthread+0x10/0x10 [ 10.650262] ret_from_fork+0x41/0x80 [ 10.650284] ? __pfx_kthread+0x10/0x10 [ 10.650302] ret_from_fork_asm+0x1a/0x30 [ 10.650332] </TASK> [ 10.650343] [ 10.659200] Allocated by task 164: [ 10.659431] kasan_save_stack+0x45/0x70 [ 10.659653] kasan_save_track+0x18/0x40 [ 10.659853] kasan_save_alloc_info+0x3b/0x50 [ 10.660015] __kasan_kmalloc+0xb7/0xc0 [ 10.660150] __kmalloc_cache_noprof+0x189/0x420 [ 10.660381] kmalloc_big_oob_right+0xa9/0x370 [ 10.660971] kunit_try_run_case+0x1a5/0x480 [ 10.661145] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.661327] kthread+0x337/0x6f0 [ 10.661475] ret_from_fork+0x41/0x80 [ 10.661859] ret_from_fork_asm+0x1a/0x30 [ 10.662055] [ 10.662151] The buggy address belongs to the object at ffff888102de8000 [ 10.662151] which belongs to the cache kmalloc-8k of size 8192 [ 10.662636] The buggy address is located 0 bytes to the right of [ 10.662636] allocated 7936-byte region [ffff888102de8000, ffff888102de9f00) [ 10.663106] [ 10.663246] The buggy address belongs to the physical page: [ 10.663491] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102de8 [ 10.663793] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 10.664141] flags: 0x200000000000040(head|node=0|zone=2) [ 10.664345] page_type: f5(slab) [ 10.664516] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 10.664842] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 10.665199] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 10.665556] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 10.665803] head: 0200000000000003 ffffea00040b7a01 00000000ffffffff 00000000ffffffff [ 10.666051] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 10.666410] page dumped because: kasan: bad access detected [ 10.666665] [ 10.666782] Memory state around the buggy address: [ 10.667065] ffff888102de9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 10.667407] ffff888102de9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 10.667923] >ffff888102de9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.668272] ^ [ 10.668392] ffff888102de9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.669017] ffff888102dea000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.669375] ==================================================================