Date
June 18, 2025, 6:43 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 19.705248] ================================================================== [ 19.705385] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 19.705572] Read of size 1 at addr fff00000c60580bf by task kunit_try_catch/148 [ 19.705673] [ 19.705742] CPU: 0 UID: 0 PID: 148 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250618 #1 PREEMPT [ 19.705951] Tainted: [B]=BAD_PAGE, [N]=TEST [ 19.706035] Hardware name: linux,dummy-virt (DT) [ 19.706131] Call trace: [ 19.706203] show_stack+0x20/0x38 (C) [ 19.706337] dump_stack_lvl+0x8c/0xd0 [ 19.706479] print_report+0x118/0x608 [ 19.706613] kasan_report+0xdc/0x128 [ 19.706755] __asan_report_load1_noabort+0x20/0x30 [ 19.707079] kmalloc_oob_left+0x2ec/0x320 [ 19.707202] kunit_try_run_case+0x170/0x3f0 [ 19.707304] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 19.707419] kthread+0x328/0x630 [ 19.707856] ret_from_fork+0x10/0x20 [ 19.707978] [ 19.708026] Allocated by task 9: [ 19.708090] kasan_save_stack+0x3c/0x68 [ 19.708171] kasan_save_track+0x20/0x40 [ 19.708253] kasan_save_alloc_info+0x40/0x58 [ 19.708337] __kasan_kmalloc+0xd4/0xd8 [ 19.708412] __kmalloc_node_track_caller_noprof+0x194/0x4b8 [ 19.708505] kvasprintf+0xe0/0x180 [ 19.708596] __kthread_create_on_node+0x16c/0x350 [ 19.708682] kthread_create_on_node+0xe4/0x130 [ 19.708760] create_worker+0x380/0x6b8 [ 19.709485] worker_thread+0x808/0xf38 [ 19.709593] kthread+0x328/0x630 [ 19.709664] ret_from_fork+0x10/0x20 [ 19.709736] [ 19.709776] The buggy address belongs to the object at fff00000c60580a0 [ 19.709776] which belongs to the cache kmalloc-16 of size 16 [ 19.710110] The buggy address is located 19 bytes to the right of [ 19.710110] allocated 12-byte region [fff00000c60580a0, fff00000c60580ac) [ 19.710514] [ 19.710559] The buggy address belongs to the physical page: [ 19.710620] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106058 [ 19.710715] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 19.710816] page_type: f5(slab) [ 19.710894] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 19.711863] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 19.712044] page dumped because: kasan: bad access detected [ 19.712317] [ 19.712652] Memory state around the buggy address: [ 19.712752] fff00000c6057f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.712850] fff00000c6058000: 00 00 fc fc 00 00 fc fc fa fb fc fc fa fb fc fc [ 19.712985] >fff00000c6058080: fa fb fc fc 00 04 fc fc 00 07 fc fc fc fc fc fc [ 19.713105] ^ [ 19.713179] fff00000c6058100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.713299] fff00000c6058180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 19.713397] ==================================================================
[ 10.503356] ================================================================== [ 10.504434] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 10.504679] Read of size 1 at addr ffff888101677b9f by task kunit_try_catch/164 [ 10.504933] [ 10.505250] CPU: 0 UID: 0 PID: 164 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc2-next-20250618 #1 PREEMPT(voluntary) [ 10.505304] Tainted: [B]=BAD_PAGE, [N]=TEST [ 10.505316] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 10.505337] Call Trace: [ 10.505350] <TASK> [ 10.505368] dump_stack_lvl+0x73/0xb0 [ 10.505399] print_report+0xd1/0x650 [ 10.505419] ? __virt_addr_valid+0x1db/0x2d0 [ 10.505443] ? kmalloc_oob_left+0x361/0x3c0 [ 10.505462] ? kasan_complete_mode_report_info+0x64/0x200 [ 10.505486] ? kmalloc_oob_left+0x361/0x3c0 [ 10.505505] kasan_report+0x141/0x180 [ 10.505525] ? kmalloc_oob_left+0x361/0x3c0 [ 10.505549] __asan_report_load1_noabort+0x18/0x20 [ 10.505571] kmalloc_oob_left+0x361/0x3c0 [ 10.505590] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 10.505610] ? __schedule+0x10cc/0x2b60 [ 10.505631] ? __pfx_read_tsc+0x10/0x10 [ 10.505651] ? ktime_get_ts64+0x86/0x230 [ 10.505676] kunit_try_run_case+0x1a5/0x480 [ 10.505698] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.505718] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 10.505740] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 10.505761] ? __kthread_parkme+0x82/0x180 [ 10.505780] ? preempt_count_sub+0x50/0x80 [ 10.505802] ? __pfx_kunit_try_run_case+0x10/0x10 [ 10.505823] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 10.505844] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 10.505866] kthread+0x337/0x6f0 [ 10.505883] ? trace_preempt_on+0x20/0xc0 [ 10.505918] ? __pfx_kthread+0x10/0x10 [ 10.505937] ? _raw_spin_unlock_irq+0x47/0x80 [ 10.505955] ? calculate_sigpending+0x7b/0xa0 [ 10.505989] ? __pfx_kthread+0x10/0x10 [ 10.506009] ret_from_fork+0x116/0x1d0 [ 10.506026] ? __pfx_kthread+0x10/0x10 [ 10.506045] ret_from_fork_asm+0x1a/0x30 [ 10.506074] </TASK> [ 10.506084] [ 10.513701] Allocated by task 26: [ 10.513855] kasan_save_stack+0x45/0x70 [ 10.513992] kasan_save_track+0x18/0x40 [ 10.514119] kasan_save_alloc_info+0x3b/0x50 [ 10.514320] __kasan_kmalloc+0xb7/0xc0 [ 10.514498] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 10.514802] kstrdup+0x3e/0xa0 [ 10.515065] devtmpfs_work_loop+0x96d/0xf30 [ 10.515477] devtmpfsd+0x3b/0x40 [ 10.516016] kthread+0x337/0x6f0 [ 10.516163] ret_from_fork+0x116/0x1d0 [ 10.516352] ret_from_fork_asm+0x1a/0x30 [ 10.517780] [ 10.518004] Freed by task 26: [ 10.518179] kasan_save_stack+0x45/0x70 [ 10.518618] kasan_save_track+0x18/0x40 [ 10.518768] kasan_save_free_info+0x3f/0x60 [ 10.519100] __kasan_slab_free+0x56/0x70 [ 10.519321] kfree+0x222/0x3f0 [ 10.519706] devtmpfs_work_loop+0xacb/0xf30 [ 10.519915] devtmpfsd+0x3b/0x40 [ 10.520259] kthread+0x337/0x6f0 [ 10.520429] ret_from_fork+0x116/0x1d0 [ 10.520737] ret_from_fork_asm+0x1a/0x30 [ 10.521001] [ 10.521169] The buggy address belongs to the object at ffff888101677b80 [ 10.521169] which belongs to the cache kmalloc-16 of size 16 [ 10.521946] The buggy address is located 15 bytes to the right of [ 10.521946] allocated 16-byte region [ffff888101677b80, ffff888101677b90) [ 10.522751] [ 10.522910] The buggy address belongs to the physical page: [ 10.523136] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101677 [ 10.523828] flags: 0x200000000000000(node=0|zone=2) [ 10.524169] page_type: f5(slab) [ 10.524307] raw: 0200000000000000 ffff888100041640 dead000000000122 0000000000000000 [ 10.524798] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 10.525279] page dumped because: kasan: bad access detected [ 10.525530] [ 10.525615] Memory state around the buggy address: [ 10.525786] ffff888101677a80: 00 00 fc fc 00 04 fc fc 00 04 fc fc fa fb fc fc [ 10.526096] ffff888101677b00: fa fb fc fc 00 05 fc fc fa fb fc fc fa fb fc fc [ 10.526840] >ffff888101677b80: fa fb fc fc 00 07 fc fc fc fc fc fc fc fc fc fc [ 10.527550] ^ [ 10.527725] ffff888101677c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.528385] ffff888101677c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 10.528945] ==================================================================