Date
Nov. 22, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 37.240275] ================================================================== [ 37.241855] BUG: KASAN: slab-use-after-free in strrchr+0x6c/0x78 [ 37.242894] Read of size 1 at addr fff00000c6a4c550 by task kunit_try_catch/248 [ 37.244013] [ 37.244885] CPU: 1 UID: 0 PID: 248 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 37.246091] Tainted: [B]=BAD_PAGE, [N]=TEST [ 37.247316] Hardware name: linux,dummy-virt (DT) [ 37.247909] Call trace: [ 37.248362] show_stack+0x20/0x38 (C) [ 37.249043] dump_stack_lvl+0x8c/0xd0 [ 37.250747] print_report+0x118/0x5e0 [ 37.251293] kasan_report+0xc8/0x118 [ 37.251943] __asan_report_load1_noabort+0x20/0x30 [ 37.253502] strrchr+0x6c/0x78 [ 37.254260] kasan_strings+0x1e0/0x8f8 [ 37.255094] kunit_try_run_case+0x14c/0x3d0 [ 37.255761] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.256917] kthread+0x24c/0x2d0 [ 37.258303] ret_from_fork+0x10/0x20 [ 37.259208] [ 37.259633] Allocated by task 248: [ 37.260213] kasan_save_stack+0x3c/0x68 [ 37.261139] kasan_save_track+0x20/0x40 [ 37.262408] kasan_save_alloc_info+0x40/0x58 [ 37.263133] __kasan_kmalloc+0xd4/0xd8 [ 37.263865] __kmalloc_cache_noprof+0x15c/0x3c8 [ 37.264772] kasan_strings+0xb4/0x8f8 [ 37.265614] kunit_try_run_case+0x14c/0x3d0 [ 37.266972] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.268621] kthread+0x24c/0x2d0 [ 37.269430] ret_from_fork+0x10/0x20 [ 37.270231] [ 37.271065] Freed by task 248: [ 37.271526] kasan_save_stack+0x3c/0x68 [ 37.272235] kasan_save_track+0x20/0x40 [ 37.273975] kasan_save_free_info+0x4c/0x78 [ 37.274762] __kasan_slab_free+0x6c/0x98 [ 37.275480] kfree+0x114/0x3d0 [ 37.276109] kasan_strings+0x128/0x8f8 [ 37.277190] kunit_try_run_case+0x14c/0x3d0 [ 37.278023] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 37.278918] kthread+0x24c/0x2d0 [ 37.279481] ret_from_fork+0x10/0x20 [ 37.280090] [ 37.280468] The buggy address belongs to the object at fff00000c6a4c540 [ 37.280468] which belongs to the cache kmalloc-32 of size 32 [ 37.282393] The buggy address is located 16 bytes inside of [ 37.282393] freed 32-byte region [fff00000c6a4c540, fff00000c6a4c560) [ 37.283747] [ 37.284153] The buggy address belongs to the physical page: [ 37.285561] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a4c [ 37.286640] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 37.287604] page_type: f5(slab) [ 37.288106] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 37.289461] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 37.290294] page dumped because: kasan: bad access detected [ 37.290842] [ 37.291466] Memory state around the buggy address: [ 37.292591] fff00000c6a4c400: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.293763] fff00000c6a4c480: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 37.295174] >fff00000c6a4c500: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 37.296601] ^ [ 37.298305] fff00000c6a4c580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.299318] fff00000c6a4c600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 37.300285] ==================================================================
[ 28.154943] ================================================================== [ 28.155565] BUG: KASAN: slab-use-after-free in strrchr+0x64/0x70 [ 28.156458] Read of size 1 at addr ffff888102a18a90 by task kunit_try_catch/267 [ 28.157333] [ 28.157644] CPU: 1 UID: 0 PID: 267 Comm: kunit_try_catch Tainted: G B N 6.12.0-next-20241122 #1 [ 28.159009] Tainted: [B]=BAD_PAGE, [N]=TEST [ 28.159565] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 28.160217] Call Trace: [ 28.160540] <TASK> [ 28.160955] dump_stack_lvl+0x73/0xb0 [ 28.161965] print_report+0xd1/0x640 [ 28.162586] ? __virt_addr_valid+0x1db/0x2d0 [ 28.163125] ? kasan_complete_mode_report_info+0x64/0x200 [ 28.163793] kasan_report+0x102/0x140 [ 28.164464] ? strrchr+0x64/0x70 [ 28.164941] ? strrchr+0x64/0x70 [ 28.165242] __asan_report_load1_noabort+0x18/0x20 [ 28.166254] strrchr+0x64/0x70 [ 28.167141] kasan_strings+0x24c/0xb60 [ 28.167722] ? __pfx_kasan_strings+0x10/0x10 [ 28.168566] ? __schedule+0xc3e/0x2790 [ 28.169535] ? __pfx_read_tsc+0x10/0x10 [ 28.169888] ? ktime_get_ts64+0x84/0x230 [ 28.170377] kunit_try_run_case+0x1b3/0x490 [ 28.170770] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.171049] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 28.171765] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 28.172674] ? __kthread_parkme+0x82/0x160 [ 28.173067] ? preempt_count_sub+0x50/0x80 [ 28.174176] ? __pfx_kunit_try_run_case+0x10/0x10 [ 28.174653] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 28.175271] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.175853] kthread+0x257/0x310 [ 28.176406] ? __pfx_kthread+0x10/0x10 [ 28.176845] ret_from_fork+0x41/0x80 [ 28.177412] ? __pfx_kthread+0x10/0x10 [ 28.177867] ret_from_fork_asm+0x1a/0x30 [ 28.178487] </TASK> [ 28.178736] [ 28.179493] Allocated by task 267: [ 28.179844] kasan_save_stack+0x3d/0x60 [ 28.180393] kasan_save_track+0x18/0x40 [ 28.180671] kasan_save_alloc_info+0x3b/0x50 [ 28.181085] __kasan_kmalloc+0xb7/0xc0 [ 28.181531] __kmalloc_cache_noprof+0x184/0x410 [ 28.182243] kasan_strings+0xb3/0xb60 [ 28.182614] kunit_try_run_case+0x1b3/0x490 [ 28.183208] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.183626] kthread+0x257/0x310 [ 28.184210] ret_from_fork+0x41/0x80 [ 28.184611] ret_from_fork_asm+0x1a/0x30 [ 28.185014] [ 28.185240] Freed by task 267: [ 28.185635] kasan_save_stack+0x3d/0x60 [ 28.186083] kasan_save_track+0x18/0x40 [ 28.186565] kasan_save_free_info+0x3f/0x60 [ 28.186940] __kasan_slab_free+0x56/0x70 [ 28.187206] kfree+0x123/0x3f0 [ 28.187756] kasan_strings+0x13a/0xb60 [ 28.188726] kunit_try_run_case+0x1b3/0x490 [ 28.189422] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 28.190034] kthread+0x257/0x310 [ 28.190527] ret_from_fork+0x41/0x80 [ 28.190852] ret_from_fork_asm+0x1a/0x30 [ 28.191348] [ 28.192775] The buggy address belongs to the object at ffff888102a18a80 [ 28.192775] which belongs to the cache kmalloc-32 of size 32 [ 28.194530] The buggy address is located 16 bytes inside of [ 28.194530] freed 32-byte region [ffff888102a18a80, ffff888102a18aa0) [ 28.195773] [ 28.196484] The buggy address belongs to the physical page: [ 28.196847] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102a18 [ 28.197653] flags: 0x200000000000000(node=0|zone=2) [ 28.198203] page_type: f5(slab) [ 28.198625] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 28.199341] raw: 0000000000000000 0000000080400040 00000001f5000000 0000000000000000 [ 28.199717] page dumped because: kasan: bad access detected [ 28.200344] [ 28.200508] Memory state around the buggy address: [ 28.200781] ffff888102a18980: fa fb fb fb fc fc fc fc 00 00 00 fc fc fc fc fc [ 28.201602] ffff888102a18a00: 00 00 00 fc fc fc fc fc 00 00 07 fc fc fc fc fc [ 28.202491] >ffff888102a18a80: fa fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 28.203355] ^ [ 28.204373] ffff888102a18b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.205176] ffff888102a18b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.205503] ==================================================================