Date
Dec. 3, 2024, 11:38 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 33.695446] ================================================================== [ 33.696609] BUG: KASAN: slab-use-after-free in strnlen+0x80/0x88 [ 33.697396] Read of size 1 at addr fff00000c5921b90 by task kunit_try_catch/248 [ 33.698142] [ 33.698666] CPU: 0 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241203 #1 [ 33.700202] Tainted: [B]=BAD_PAGE, [N]=TEST [ 33.701105] Hardware name: linux,dummy-virt (DT) [ 33.701787] Call trace: [ 33.702276] show_stack+0x20/0x38 (C) [ 33.703277] dump_stack_lvl+0x8c/0xd0 [ 33.703851] print_report+0x118/0x5e0 [ 33.704515] kasan_report+0xc8/0x118 [ 33.705130] __asan_report_load1_noabort+0x20/0x30 [ 33.705892] strnlen+0x80/0x88 [ 33.706496] kasan_strings+0x364/0x8d8 [ 33.707412] kunit_try_run_case+0x14c/0x3d0 [ 33.708126] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.708937] kthread+0x24c/0x2d0 [ 33.709555] ret_from_fork+0x10/0x20 [ 33.710198] [ 33.710534] Allocated by task 248: [ 33.711191] kasan_save_stack+0x3c/0x68 [ 33.711958] kasan_save_track+0x20/0x40 [ 33.712518] kasan_save_alloc_info+0x40/0x58 [ 33.713318] __kasan_kmalloc+0xd4/0xd8 [ 33.713950] __kmalloc_cache_noprof+0x15c/0x3c0 [ 33.714671] kasan_strings+0xb0/0x8d8 [ 33.715478] kunit_try_run_case+0x14c/0x3d0 [ 33.716263] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.716949] kthread+0x24c/0x2d0 [ 33.717544] ret_from_fork+0x10/0x20 [ 33.718400] [ 33.718923] Freed by task 248: [ 33.719423] kasan_save_stack+0x3c/0x68 [ 33.720272] kasan_save_track+0x20/0x40 [ 33.720707] kasan_save_free_info+0x4c/0x78 [ 33.721149] __kasan_slab_free+0x6c/0x98 [ 33.721624] kfree+0x114/0x3c8 [ 33.722296] kasan_strings+0x124/0x8d8 [ 33.723013] kunit_try_run_case+0x14c/0x3d0 [ 33.723994] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 33.724827] kthread+0x24c/0x2d0 [ 33.725300] ret_from_fork+0x10/0x20 [ 33.725817] [ 33.726114] The buggy address belongs to the object at fff00000c5921b80 [ 33.726114] which belongs to the cache kmalloc-32 of size 32 [ 33.727302] The buggy address is located 16 bytes inside of [ 33.727302] freed 32-byte region [fff00000c5921b80, fff00000c5921ba0) [ 33.729353] [ 33.729845] The buggy address belongs to the physical page: [ 33.730746] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105921 [ 33.731861] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 33.732854] page_type: f5(slab) [ 33.733538] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 33.734664] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 33.735798] page dumped because: kasan: bad access detected [ 33.736624] [ 33.737009] Memory state around the buggy address: [ 33.737739] fff00000c5921a80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.738886] fff00000c5921b00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.739874] >fff00000c5921b80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.740891] ^ [ 33.741572] fff00000c5921c00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 33.742636] fff00000c5921c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 33.743592] ==================================================================
[ 28.969597] ================================================================== [ 28.970606] BUG: KASAN: slab-use-after-free in strnlen+0x73/0x80 [ 28.971266] Read of size 1 at addr ffff888102a07b90 by task kunit_try_catch/268 [ 28.972133] [ 28.972430] CPU: 1 UID: 0 PID: 268 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc1-next-20241203 #1 [ 28.973448] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.973893] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.974851] Call Trace: [ 28.975142] <TASK> [ 28.975418] dump_stack_lvl+0x73/0xb0 [ 28.975866] print_report+0xd1/0x640 [ 28.976360] ? __virt_addr_valid+0x1db/0x2d0 [ 28.977015] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.977778] kasan_report+0x102/0x140 [ 28.978279] ? strnlen+0x73/0x80 [ 28.978510] ? strnlen+0x73/0x80 [ 28.978879] __asan_report_load1_noabort+0x18/0x20 [ 28.979372] strnlen+0x73/0x80 [ 28.979718] kasan_strings+0x4c3/0xb60 [ 28.979990] ? __pfx_kasan_strings+0x10/0x10 [ 28.980427] ? __schedule+0xc3e/0x2790 [ 28.980996] ? __pfx_read_tsc+0x10/0x10 [ 28.981425] ? ktime_get_ts64+0x86/0x230 [ 28.981826] kunit_try_run_case+0x1b3/0x490 [ 28.982185] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.982898] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.983378] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.983941] ? __kthread_parkme+0x82/0x160 [ 28.984450] ? preempt_count_sub+0x50/0x80 [ 28.984964] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.985377] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.986018] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.986488] kthread+0x257/0x310 [ 28.986935] ? __pfx_kthread+0x10/0x10 [ 28.987350] ret_from_fork+0x41/0x80 [ 28.987699] ? __pfx_kthread+0x10/0x10 [ 28.988151] ret_from_fork_asm+0x1a/0x30 [ 28.988651] </TASK> [ 28.988847] [ 28.989137] Allocated by task 268: [ 28.989511] kasan_save_stack+0x3d/0x60 [ 28.989981] kasan_save_track+0x18/0x40 [ 28.990410] kasan_save_alloc_info+0x3b/0x50 [ 28.990821] __kasan_kmalloc+0xb7/0xc0 [ 28.991283] __kmalloc_cache_noprof+0x184/0x410 [ 28.991939] kasan_strings+0xb9/0xb60 [ 28.992348] kunit_try_run_case+0x1b3/0x490 [ 28.992796] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.993278] kthread+0x257/0x310 [ 28.993822] ret_from_fork+0x41/0x80 [ 28.994179] ret_from_fork_asm+0x1a/0x30 [ 28.994747] [ 28.995065] Freed by task 268: [ 28.995300] kasan_save_stack+0x3d/0x60 [ 28.995775] kasan_save_track+0x18/0x40 [ 28.996179] kasan_save_free_info+0x3f/0x60 [ 28.996460] __kasan_slab_free+0x56/0x70 [ 28.996861] kfree+0x123/0x3f0 [ 28.997302] kasan_strings+0x13c/0xb60 [ 28.997795] kunit_try_run_case+0x1b3/0x490 [ 28.998244] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.998721] kthread+0x257/0x310 [ 28.999155] ret_from_fork+0x41/0x80 [ 28.999625] ret_from_fork_asm+0x1a/0x30 [ 29.000022] [ 29.000204] The buggy address belongs to the object at ffff888102a07b80 [ 29.000204] which belongs to the cache kmalloc-32 of size 32 [ 29.001173] The buggy address is located 16 bytes inside of [ 29.001173] freed 32-byte region [ffff888102a07b80, ffff888102a07ba0) [ 29.002195] [ 29.002440] The buggy address belongs to the physical page: [ 29.002846] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a07 [ 29.003606] flags: 0x200000000000000(node=0|zone=2) [ 29.004019] page_type: f5(slab) [ 29.004368] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 29.005108] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 29.005723] page dumped because: kasan: bad access detected [ 29.006096] [ 29.006298] Memory state around the buggy address: [ 29.006631] ffff888102a07a80: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 29.007090] ffff888102a07b00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 29.007811] >ffff888102a07b80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 29.008426] ^ [ 29.009004] ffff888102a07c00: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 29.009739] ffff888102a07c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 29.010398] ==================================================================