Date
July 10, 2025, 9:07 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 29.272478] ================================================================== [ 29.272591] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x2ec/0x320 [ 29.272642] Read of size 1 at addr fff00000c8686a5f by task kunit_try_catch/169 [ 29.272691] [ 29.272721] CPU: 0 UID: 0 PID: 169 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250710 #1 PREEMPT [ 29.272810] Tainted: [B]=BAD_PAGE, [N]=TEST [ 29.272837] Hardware name: linux,dummy-virt (DT) [ 29.272868] Call trace: [ 29.272890] show_stack+0x20/0x38 (C) [ 29.272936] dump_stack_lvl+0x8c/0xd0 [ 29.272990] print_report+0x118/0x5d0 [ 29.273034] kasan_report+0xdc/0x128 [ 29.273075] __asan_report_load1_noabort+0x20/0x30 [ 29.273122] kmalloc_oob_left+0x2ec/0x320 [ 29.273180] kunit_try_run_case+0x170/0x3f0 [ 29.273227] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.273280] kthread+0x328/0x630 [ 29.273321] ret_from_fork+0x10/0x20 [ 29.273367] [ 29.273384] Allocated by task 110: [ 29.273412] kasan_save_stack+0x3c/0x68 [ 29.273452] kasan_save_track+0x20/0x40 [ 29.273490] kasan_save_alloc_info+0x40/0x58 [ 29.273539] __kasan_kmalloc+0xd4/0xd8 [ 29.273582] __kmalloc_noprof+0x198/0x4c8 [ 29.273620] kunit_kmalloc_array+0x34/0x88 [ 29.273657] test_readerwriter+0x3b0/0x948 [ 29.273696] kunit_try_run_case+0x170/0x3f0 [ 29.273733] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 29.273777] kthread+0x328/0x630 [ 29.273807] ret_from_fork+0x10/0x20 [ 29.273841] [ 29.273859] The buggy address belongs to the object at fff00000c8686a40 [ 29.273859] which belongs to the cache kmalloc-16 of size 16 [ 29.273916] The buggy address is located 15 bytes to the right of [ 29.273916] allocated 16-byte region [fff00000c8686a40, fff00000c8686a50) [ 29.273981] [ 29.274007] The buggy address belongs to the physical page: [ 29.274304] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xfff00000c8686a40 pfn:0x108686 [ 29.274363] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 29.274427] page_type: f5(slab) [ 29.274464] raw: 0bfffe0000000000 fff00000c0001640 dead000000000122 0000000000000000 [ 29.274514] raw: fff00000c8686a40 000000008080007f 00000000f5000000 0000000000000000 [ 29.274557] page dumped because: kasan: bad access detected [ 29.274588] [ 29.274605] Memory state around the buggy address: [ 29.274635] fff00000c8686900: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 29.274677] fff00000c8686980: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 29.274718] >fff00000c8686a00: fa fb fc fc fa fb fc fc fa fb fc fc 00 07 fc fc [ 29.274756] ^ [ 29.274802] fff00000c8686a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.274900] fff00000c8686b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.274991] ==================================================================
[ 24.385869] ================================================================== [ 24.386356] BUG: KASAN: slab-out-of-bounds in kmalloc_oob_left+0x361/0x3c0 [ 24.386618] Read of size 1 at addr ffff888103cd651f by task kunit_try_catch/186 [ 24.389360] [ 24.389482] CPU: 1 UID: 0 PID: 186 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc5-next-20250710 #1 PREEMPT(voluntary) [ 24.389536] Tainted: [B]=BAD_PAGE, [N]=TEST [ 24.389691] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.389734] Call Trace: [ 24.389750] <TASK> [ 24.389769] dump_stack_lvl+0x73/0xb0 [ 24.389805] print_report+0xd1/0x610 [ 24.389830] ? __virt_addr_valid+0x1db/0x2d0 [ 24.389855] ? kmalloc_oob_left+0x361/0x3c0 [ 24.389875] ? kasan_complete_mode_report_info+0x64/0x200 [ 24.389901] ? kmalloc_oob_left+0x361/0x3c0 [ 24.389922] kasan_report+0x141/0x180 [ 24.389943] ? kmalloc_oob_left+0x361/0x3c0 [ 24.389968] __asan_report_load1_noabort+0x18/0x20 [ 24.389991] kmalloc_oob_left+0x361/0x3c0 [ 24.390012] ? __pfx_kmalloc_oob_left+0x10/0x10 [ 24.390033] ? __schedule+0x10cc/0x2b60 [ 24.390056] ? __pfx_read_tsc+0x10/0x10 [ 24.390077] ? ktime_get_ts64+0x86/0x230 [ 24.390101] kunit_try_run_case+0x1a5/0x480 [ 24.390123] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.390143] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 24.390165] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 24.390187] ? __kthread_parkme+0x82/0x180 [ 24.390208] ? preempt_count_sub+0x50/0x80 [ 24.390231] ? __pfx_kunit_try_run_case+0x10/0x10 [ 24.390252] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.390276] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 24.390300] kthread+0x337/0x6f0 [ 24.390319] ? trace_preempt_on+0x20/0xc0 [ 24.390343] ? __pfx_kthread+0x10/0x10 [ 24.390364] ? _raw_spin_unlock_irq+0x47/0x80 [ 24.390384] ? calculate_sigpending+0x7b/0xa0 [ 24.390408] ? __pfx_kthread+0x10/0x10 [ 24.390429] ret_from_fork+0x116/0x1d0 [ 24.390447] ? __pfx_kthread+0x10/0x10 [ 24.390467] ret_from_fork_asm+0x1a/0x30 [ 24.390498] </TASK> [ 24.390510] [ 24.400215] Allocated by task 116: [ 24.400370] kasan_save_stack+0x45/0x70 [ 24.400709] kasan_save_track+0x18/0x40 [ 24.400915] kasan_save_alloc_info+0x3b/0x50 [ 24.401388] __kasan_kmalloc+0xb7/0xc0 [ 24.401570] __kmalloc_node_track_caller_noprof+0x1cb/0x500 [ 24.402039] kvasprintf+0xc5/0x150 [ 24.402307] kasprintf+0xb6/0xf0 [ 24.402439] miscdev_test_can_open+0x9a/0x2e0 [ 24.402876] miscdev_test_collision+0x374/0x700 [ 24.403085] kunit_try_run_case+0x1a5/0x480 [ 24.403394] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.403791] kthread+0x337/0x6f0 [ 24.404162] ret_from_fork+0x116/0x1d0 [ 24.404309] ret_from_fork_asm+0x1a/0x30 [ 24.404507] [ 24.404878] Freed by task 116: [ 24.405059] kasan_save_stack+0x45/0x70 [ 24.405356] kasan_save_track+0x18/0x40 [ 24.405615] kasan_save_free_info+0x3f/0x60 [ 24.405900] __kasan_slab_free+0x56/0x70 [ 24.406144] kfree+0x222/0x3f0 [ 24.406300] miscdev_test_can_open+0x12c/0x2e0 [ 24.406748] miscdev_test_collision+0x374/0x700 [ 24.407084] kunit_try_run_case+0x1a5/0x480 [ 24.407254] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 24.407729] kthread+0x337/0x6f0 [ 24.408001] ret_from_fork+0x116/0x1d0 [ 24.408150] ret_from_fork_asm+0x1a/0x30 [ 24.408433] [ 24.408515] The buggy address belongs to the object at ffff888103cd6500 [ 24.408515] which belongs to the cache kmalloc-16 of size 16 [ 24.409386] The buggy address is located 15 bytes to the right of [ 24.409386] allocated 16-byte region [ffff888103cd6500, ffff888103cd6510) [ 24.410274] [ 24.410361] The buggy address belongs to the physical page: [ 24.410728] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103cd6 [ 24.411337] flags: 0x200000000000000(node=0|zone=2) [ 24.411617] page_type: f5(slab) [ 24.411935] raw: 0200000000000000 ffff888100041640 dead000000000100 dead000000000122 [ 24.412352] raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000 [ 24.412657] page dumped because: kasan: bad access detected [ 24.412905] [ 24.413213] Memory state around the buggy address: [ 24.413502] ffff888103cd6400: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.413951] ffff888103cd6480: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.414416] >ffff888103cd6500: fa fb fc fc 00 07 fc fc fa fb fc fc fa fb fc fc [ 24.414874] ^ [ 24.415026] ffff888103cd6580: fa fb fc fc fa fb fc fc fa fb fc fc 00 00 fc fc [ 24.415662] ffff888103cd6600: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc [ 24.415960] ==================================================================