Date
Nov. 20, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 39.919035] ================================================================== [ 39.919903] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 39.920569] Read of size 1 at addr fff00000c65a90d0 by task kunit_try_catch/248 [ 39.922502] [ 39.922803] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 39.923916] Tainted: [B]=BAD_PAGE, [N]=TEST [ 39.924630] Hardware name: linux,dummy-virt (DT) [ 39.925301] Call trace: [ 39.925751] show_stack+0x20/0x38 (C) [ 39.926365] dump_stack_lvl+0x8c/0xd0 [ 39.926962] print_report+0x118/0x5e0 [ 39.927565] kasan_report+0xc8/0x118 [ 39.928087] __asan_report_load1_noabort+0x20/0x30 [ 39.928820] strnlen+0x80/0x88 [ 39.929314] kasan_strings+0x380/0x8f8 [ 39.929850] kunit_try_run_case+0x14c/0x3d0 [ 39.930516] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.931227] kthread+0x24c/0x2d0 [ 39.931712] ret_from_fork+0x10/0x20 [ 39.932316] [ 39.932673] Allocated by task 248: [ 39.933214] kasan_save_stack+0x3c/0x68 [ 39.933789] kasan_save_track+0x20/0x40 [ 39.934284] kasan_save_alloc_info+0x40/0x58 [ 39.934965] __kasan_kmalloc+0xd4/0xd8 [ 39.935566] __kmalloc_cache_noprof+0x15c/0x3c8 [ 39.936212] kasan_strings+0xb4/0x8f8 [ 39.936728] kunit_try_run_case+0x14c/0x3d0 [ 39.937351] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.938037] kthread+0x24c/0x2d0 [ 39.938584] ret_from_fork+0x10/0x20 [ 39.939132] [ 39.939508] Freed by task 248: [ 39.939897] kasan_save_stack+0x3c/0x68 [ 39.940497] kasan_save_track+0x20/0x40 [ 39.941081] kasan_save_free_info+0x4c/0x78 [ 39.941633] __kasan_slab_free+0x6c/0x98 [ 39.942212] kfree+0x114/0x3d0 [ 39.942755] kasan_strings+0x128/0x8f8 [ 39.943320] kunit_try_run_case+0x14c/0x3d0 [ 39.943992] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 39.944856] kthread+0x24c/0x2d0 [ 39.945479] ret_from_fork+0x10/0x20 [ 39.945869] [ 39.946233] The buggy address belongs to the object at fff00000c65a90c0 [ 39.946233] which belongs to the cache kmalloc-32 of size 32 [ 39.947617] The buggy address is located 16 bytes inside of [ 39.947617] freed 32-byte region [fff00000c65a90c0, fff00000c65a90e0) [ 39.948943] [ 39.949376] The buggy address belongs to the physical page: [ 39.950158] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1065a9 [ 39.951145] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 39.951735] page_type: f5(slab) [ 39.952273] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 39.953248] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 39.954106] page dumped because: kasan: bad access detected [ 39.954943] [ 39.955224] Memory state around the buggy address: [ 39.955958] fff00000c65a8f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.956751] fff00000c65a9000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 39.957480] >fff00000c65a9080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 39.958332] ^ [ 39.958956] fff00000c65a9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.959813] fff00000c65a9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.960510] ==================================================================
[ 31.585412] ================================================================== [ 31.586452] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 31.587016] Read of size 1 at addr ffff8881029f3d50 by task kunit_try_catch/266 [ 31.587840] [ 31.588189] CPU: 1 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241120 #1 [ 31.589054] Tainted: [B]=BAD_PAGE, [N]=TEST [ 31.589713] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 31.590906] Call Trace: [ 31.591299] <TASK> [ 31.591510] dump_stack_lvl+0x73/0xb0 [ 31.591985] print_report+0xd1/0x640 [ 31.592463] ? __virt_addr_valid+0x1db/0x2d0 [ 31.592891] ? kasan_complete_mode_report_info+0x64/0x200 [ 31.593386] kasan_report+0x102/0x140 [ 31.593685] ? strnlen+0x73/0x80 [ 31.594395] ? strnlen+0x73/0x80 [ 31.594772] __asan_report_load1_noabort+0x18/0x20 [ 31.595446] strnlen+0x73/0x80 [ 31.595825] kasan_strings+0x4cc/0xb60 [ 31.596485] ? __pfx_kasan_strings+0x10/0x10 [ 31.597211] ? __schedule+0xc3e/0x2790 [ 31.597613] ? __pfx_read_tsc+0x10/0x10 [ 31.597963] ? ktime_get_ts64+0x84/0x230 [ 31.598598] kunit_try_run_case+0x1b3/0x490 [ 31.599247] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.600368] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 31.601198] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 31.601662] ? __kthread_parkme+0x82/0x160 [ 31.602069] ? preempt_count_sub+0x50/0x80 [ 31.602475] ? __pfx_kunit_try_run_case+0x10/0x10 [ 31.603213] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 31.604333] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.605246] kthread+0x257/0x310 [ 31.605880] ? __pfx_kthread+0x10/0x10 [ 31.606330] ret_from_fork+0x41/0x80 [ 31.607118] ? __pfx_kthread+0x10/0x10 [ 31.608032] ret_from_fork_asm+0x1a/0x30 [ 31.608333] </TASK> [ 31.608720] [ 31.609537] Allocated by task 266: [ 31.610303] kasan_save_stack+0x3d/0x60 [ 31.610805] kasan_save_track+0x18/0x40 [ 31.611202] kasan_save_alloc_info+0x3b/0x50 [ 31.612057] __kasan_kmalloc+0xb7/0xc0 [ 31.612954] __kmalloc_cache_noprof+0x184/0x410 [ 31.613557] kasan_strings+0xb3/0xb60 [ 31.614625] kunit_try_run_case+0x1b3/0x490 [ 31.614956] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.615726] kthread+0x257/0x310 [ 31.616509] ret_from_fork+0x41/0x80 [ 31.616878] ret_from_fork_asm+0x1a/0x30 [ 31.617450] [ 31.617714] Freed by task 266: [ 31.618109] kasan_save_stack+0x3d/0x60 [ 31.618499] kasan_save_track+0x18/0x40 [ 31.618983] kasan_save_free_info+0x3f/0x60 [ 31.619437] __kasan_slab_free+0x56/0x70 [ 31.620146] kfree+0x123/0x3f0 [ 31.620392] kasan_strings+0x13a/0xb60 [ 31.620669] kunit_try_run_case+0x1b3/0x490 [ 31.621333] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 31.622310] kthread+0x257/0x310 [ 31.622883] ret_from_fork+0x41/0x80 [ 31.623275] ret_from_fork_asm+0x1a/0x30 [ 31.623638] [ 31.623818] The buggy address belongs to the object at ffff8881029f3d40 [ 31.623818] which belongs to the cache kmalloc-32 of size 32 [ 31.625298] The buggy address is located 16 bytes inside of [ 31.625298] freed 32-byte region [ffff8881029f3d40, ffff8881029f3d60) [ 31.626626] [ 31.626910] The buggy address belongs to the physical page: [ 31.627308] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029f3 [ 31.628314] flags: 0x200000000000000(node=0|zone=2) [ 31.628633] page_type: f5(slab) [ 31.629093] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 31.630196] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 31.630953] page dumped because: kasan: bad access detected [ 31.631573] [ 31.631752] Memory state around the buggy address: [ 31.632384] ffff8881029f3c00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 31.633494] ffff8881029f3c80: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 31.633947] >ffff8881029f3d00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 31.635143] ^ [ 31.636240] ffff8881029f3d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.636886] ffff8881029f3e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.638011] ==================================================================