Date
June 24, 2025, 12:47 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 23.282117] ================================================================== [ 23.282248] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 23.282405] Write of size 1 at addr fff00000c65adf00 by task kunit_try_catch/146 [ 23.282535] [ 23.282682] CPU: 0 UID: 0 PID: 146 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT [ 23.282935] Tainted: [B]=BAD_PAGE, [N]=TEST [ 23.283015] Hardware name: linux,dummy-virt (DT) [ 23.283103] Call trace: [ 23.283162] show_stack+0x20/0x38 (C) [ 23.283370] dump_stack_lvl+0x8c/0xd0 [ 23.283519] print_report+0x118/0x608 [ 23.283648] kasan_report+0xdc/0x128 [ 23.283909] __asan_report_store1_noabort+0x20/0x30 [ 23.284072] kmalloc_big_oob_right+0x2a4/0x2f0 [ 23.284245] kunit_try_run_case+0x170/0x3f0 [ 23.284453] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.284706] kthread+0x328/0x630 [ 23.284867] ret_from_fork+0x10/0x20 [ 23.285174] [ 23.285221] Allocated by task 146: [ 23.285290] kasan_save_stack+0x3c/0x68 [ 23.285401] kasan_save_track+0x20/0x40 [ 23.285519] kasan_save_alloc_info+0x40/0x58 [ 23.285622] __kasan_kmalloc+0xd4/0xd8 [ 23.285748] __kmalloc_cache_noprof+0x16c/0x3c0 [ 23.285860] kmalloc_big_oob_right+0xb8/0x2f0 [ 23.286109] kunit_try_run_case+0x170/0x3f0 [ 23.286339] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 23.286482] kthread+0x328/0x630 [ 23.286636] ret_from_fork+0x10/0x20 [ 23.286748] [ 23.286803] The buggy address belongs to the object at fff00000c65ac000 [ 23.286803] which belongs to the cache kmalloc-8k of size 8192 [ 23.286967] The buggy address is located 0 bytes to the right of [ 23.286967] allocated 7936-byte region [fff00000c65ac000, fff00000c65adf00) [ 23.287122] [ 23.287171] The buggy address belongs to the physical page: [ 23.287247] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a8 [ 23.287408] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 23.287568] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 23.287720] page_type: f5(slab) [ 23.287825] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 23.287950] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 23.288203] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 23.288355] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 23.288512] head: 0bfffe0000000003 ffffc1ffc3196a01 00000000ffffffff 00000000ffffffff [ 23.288633] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 23.288730] page dumped because: kasan: bad access detected [ 23.288803] [ 23.289306] Memory state around the buggy address: [ 23.289685] fff00000c65ade00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.289814] fff00000c65ade80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.290501] >fff00000c65adf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.290802] ^ [ 23.291063] fff00000c65adf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.291182] fff00000c65ae000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.291822] ==================================================================
[ 11.037760] ================================================================== [ 11.038341] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 11.039057] Write of size 1 at addr ffff888103a19f00 by task kunit_try_catch/164 [ 11.040078] [ 11.040773] CPU: 0 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.15.4-rc2 #1 PREEMPT(voluntary) [ 11.040900] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.040917] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.040944] Call Trace: [ 11.040963] <TASK> [ 11.040991] dump_stack_lvl+0x73/0xb0 [ 11.041036] print_report+0xd1/0x650 [ 11.041061] ? __virt_addr_valid+0x1db/0x2d0 [ 11.041085] ? kmalloc_big_oob_right+0x316/0x370 [ 11.041107] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.041129] ? kmalloc_big_oob_right+0x316/0x370 [ 11.041151] kasan_report+0x141/0x180 [ 11.041173] ? kmalloc_big_oob_right+0x316/0x370 [ 11.041200] __asan_report_store1_noabort+0x1b/0x30 [ 11.041220] kmalloc_big_oob_right+0x316/0x370 [ 11.041242] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 11.041265] ? __schedule+0x10cc/0x2b60 [ 11.041306] ? __pfx_read_tsc+0x10/0x10 [ 11.041337] ? ktime_get_ts64+0x86/0x230 [ 11.041379] kunit_try_run_case+0x1a5/0x480 [ 11.041410] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.041431] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.041456] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.041478] ? __kthread_parkme+0x82/0x180 [ 11.041501] ? preempt_count_sub+0x50/0x80 [ 11.041526] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.041562] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.041585] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.041607] kthread+0x337/0x6f0 [ 11.041640] ? trace_preempt_on+0x20/0xc0 [ 11.041668] ? __pfx_kthread+0x10/0x10 [ 11.041686] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.041707] ? calculate_sigpending+0x7b/0xa0 [ 11.041729] ? __pfx_kthread+0x10/0x10 [ 11.041747] ret_from_fork+0x41/0x80 [ 11.041767] ? __pfx_kthread+0x10/0x10 [ 11.041784] ret_from_fork_asm+0x1a/0x30 [ 11.041818] </TASK> [ 11.041831] [ 11.053271] Allocated by task 164: [ 11.053636] kasan_save_stack+0x45/0x70 [ 11.054023] kasan_save_track+0x18/0x40 [ 11.054313] kasan_save_alloc_info+0x3b/0x50 [ 11.054843] __kasan_kmalloc+0xb7/0xc0 [ 11.055080] __kmalloc_cache_noprof+0x189/0x420 [ 11.055332] kmalloc_big_oob_right+0xa9/0x370 [ 11.055645] kunit_try_run_case+0x1a5/0x480 [ 11.056502] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.056857] kthread+0x337/0x6f0 [ 11.057125] ret_from_fork+0x41/0x80 [ 11.057330] ret_from_fork_asm+0x1a/0x30 [ 11.057498] [ 11.057877] The buggy address belongs to the object at ffff888103a18000 [ 11.057877] which belongs to the cache kmalloc-8k of size 8192 [ 11.058299] The buggy address is located 0 bytes to the right of [ 11.058299] allocated 7936-byte region [ffff888103a18000, ffff888103a19f00) [ 11.059168] [ 11.059447] The buggy address belongs to the physical page: [ 11.059901] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103a18 [ 11.061087] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.061563] flags: 0x200000000000040(head|node=0|zone=2) [ 11.061954] page_type: f5(slab) [ 11.062171] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 11.063315] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 11.063547] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 11.064063] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 11.064433] head: 0200000000000003 ffffea00040e8601 00000000ffffffff 00000000ffffffff [ 11.065425] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 11.065679] page dumped because: kasan: bad access detected [ 11.066341] [ 11.066444] Memory state around the buggy address: [ 11.066977] ffff888103a19e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.067564] ffff888103a19e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.067999] >ffff888103a19f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.068879] ^ [ 11.069020] ffff888103a19f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.069149] ffff888103a1a000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.069268] ==================================================================