Date
Dec. 9, 2024, 6:35 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 26.986058] ================================================================== [ 26.986659] BUG: KASAN: slab-use-after-free in kasan_strings+0x838/0x8d8 [ 26.988048] Read of size 1 at addr fff00000c1204c50 by task kunit_try_catch/247 [ 26.988768] [ 26.989110] CPU: 0 UID: 0 PID: 247 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 26.990173] Tainted: [B]=BAD_PAGE, [N]=TEST [ 26.990652] Hardware name: linux,dummy-virt (DT) [ 26.991673] Call trace: [ 26.992042] show_stack+0x20/0x38 (C) [ 26.992580] dump_stack_lvl+0x8c/0xd0 [ 26.993380] print_report+0x118/0x5e0 [ 26.993967] kasan_report+0xc8/0x118 [ 26.994474] __asan_report_load1_noabort+0x20/0x30 [ 26.995338] kasan_strings+0x838/0x8d8 [ 26.996034] kunit_try_run_case+0x14c/0x3d0 [ 26.996809] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 26.997113] kthread+0x24c/0x2d0 [ 26.997341] ret_from_fork+0x10/0x20 [ 26.997579] [ 26.997755] Allocated by task 247: [ 26.998086] kasan_save_stack+0x3c/0x68 [ 26.998749] kasan_save_track+0x20/0x40 [ 26.999580] kasan_save_alloc_info+0x40/0x58 [ 27.000792] __kasan_kmalloc+0xd4/0xd8 [ 27.001863] __kmalloc_cache_noprof+0x15c/0x3c0 [ 27.002625] kasan_strings+0xb0/0x8d8 [ 27.003384] kunit_try_run_case+0x14c/0x3d0 [ 27.004007] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.004959] kthread+0x24c/0x2d0 [ 27.005439] ret_from_fork+0x10/0x20 [ 27.005892] [ 27.006264] Freed by task 247: [ 27.006738] kasan_save_stack+0x3c/0x68 [ 27.007631] kasan_save_track+0x20/0x40 [ 27.008588] kasan_save_free_info+0x4c/0x78 [ 27.009146] __kasan_slab_free+0x6c/0x98 [ 27.009640] kfree+0x114/0x3c8 [ 27.010109] kasan_strings+0x124/0x8d8 [ 27.010609] kunit_try_run_case+0x14c/0x3d0 [ 27.011681] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 27.012365] kthread+0x24c/0x2d0 [ 27.012849] ret_from_fork+0x10/0x20 [ 27.013416] [ 27.013720] The buggy address belongs to the object at fff00000c1204c40 [ 27.013720] which belongs to the cache kmalloc-32 of size 32 [ 27.014906] The buggy address is located 16 bytes inside of [ 27.014906] freed 32-byte region [fff00000c1204c40, fff00000c1204c60) [ 27.016931] [ 27.017250] The buggy address belongs to the physical page: [ 27.017878] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101204 [ 27.018805] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 27.019508] page_type: f5(slab) [ 27.020018] raw: 0bfffe0000000000 fff00000c0001780 dead000000000122 0000000000000000 [ 27.021119] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.022019] page dumped because: kasan: bad access detected [ 27.022716] [ 27.023054] Memory state around the buggy address: [ 27.024314] fff00000c1204b00: 00 00 00 fc fc fc fc fc 00 00 00 fc fc fc fc fc [ 27.025171] fff00000c1204b80: 00 00 00 fc fc fc fc fc 00 00 00 04 fc fc fc fc [ 27.025899] >fff00000c1204c00: 00 00 07 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.026731] ^ [ 27.027593] fff00000c1204c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.028412] fff00000c1204d00: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.029366] ==================================================================
[ 27.418754] ================================================================== [ 27.420064] BUG: KASAN: slab-use-after-free in kasan_strings+0xa0c/0xb60 [ 27.420641] Read of size 1 at addr ffff888102964dd0 by task kunit_try_catch/266 [ 27.421539] [ 27.421844] CPU: 0 UID: 0 PID: 266 Comm: kunit_try_catch Tainted: G B N 6.13.0-rc2-next-20241209 #1 [ 27.422752] Tainted: [B]=BAD_PAGE, [N]=TEST [ 27.423393] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 27.425438] Call Trace: [ 27.426389] <TASK> [ 27.426641] dump_stack_lvl+0x73/0xb0 [ 27.427669] print_report+0xd1/0x640 [ 27.428145] ? __virt_addr_valid+0x1db/0x2d0 [ 27.428795] ? kasan_complete_mode_report_info+0x64/0x200 [ 27.429367] kasan_report+0x102/0x140 [ 27.429794] ? kasan_strings+0xa0c/0xb60 [ 27.430647] ? kasan_strings+0xa0c/0xb60 [ 27.431557] __asan_report_load1_noabort+0x18/0x20 [ 27.432237] kasan_strings+0xa0c/0xb60 [ 27.432904] ? __pfx_kasan_strings+0x10/0x10 [ 27.433603] ? __schedule+0xc70/0x27e0 [ 27.434328] ? __pfx_read_tsc+0x10/0x10 [ 27.435033] ? ktime_get_ts64+0x86/0x230 [ 27.435499] kunit_try_run_case+0x1b3/0x490 [ 27.436704] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.437346] ? _raw_spin_lock_irqsave+0xa2/0x110 [ 27.438078] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 27.438647] ? __kthread_parkme+0x82/0x160 [ 27.439727] ? preempt_count_sub+0x50/0x80 [ 27.440063] ? __pfx_kunit_try_run_case+0x10/0x10 [ 27.440788] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 27.441581] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.442200] kthread+0x257/0x310 [ 27.442951] ? __pfx_kthread+0x10/0x10 [ 27.443410] ret_from_fork+0x41/0x80 [ 27.444357] ? __pfx_kthread+0x10/0x10 [ 27.444789] ret_from_fork_asm+0x1a/0x30 [ 27.445691] </TASK> [ 27.446009] [ 27.446219] Allocated by task 266: [ 27.446604] kasan_save_stack+0x3d/0x60 [ 27.446962] kasan_save_track+0x18/0x40 [ 27.447475] kasan_save_alloc_info+0x3b/0x50 [ 27.448057] __kasan_kmalloc+0xb7/0xc0 [ 27.448638] __kmalloc_cache_noprof+0x184/0x410 [ 27.449251] kasan_strings+0xb9/0xb60 [ 27.449630] kunit_try_run_case+0x1b3/0x490 [ 27.450409] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.450872] kthread+0x257/0x310 [ 27.451529] ret_from_fork+0x41/0x80 [ 27.452098] ret_from_fork_asm+0x1a/0x30 [ 27.452697] [ 27.452945] Freed by task 266: [ 27.453429] kasan_save_stack+0x3d/0x60 [ 27.453864] kasan_save_track+0x18/0x40 [ 27.454426] kasan_save_free_info+0x3f/0x60 [ 27.454892] __kasan_slab_free+0x56/0x70 [ 27.455552] kfree+0x123/0x3f0 [ 27.456210] kasan_strings+0x13c/0xb60 [ 27.456489] kunit_try_run_case+0x1b3/0x490 [ 27.457189] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 27.457874] kthread+0x257/0x310 [ 27.458321] ret_from_fork+0x41/0x80 [ 27.458878] ret_from_fork_asm+0x1a/0x30 [ 27.459396] [ 27.459633] The buggy address belongs to the object at ffff888102964dc0 [ 27.459633] which belongs to the cache kmalloc-32 of size 32 [ 27.460852] The buggy address is located 16 bytes inside of [ 27.460852] freed 32-byte region [ffff888102964dc0, ffff888102964de0) [ 27.462019] [ 27.462368] The buggy address belongs to the physical page: [ 27.462932] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102964 [ 27.463903] flags: 0x200000000000000(node=0|zone=2) [ 27.464336] page_type: f5(slab) [ 27.464723] raw: 0200000000000000 ffff888100041780 dead000000000122 0000000000000000 [ 27.465647] raw: 0000000000000000 0000000080400040 00000000f5000000 0000000000000000 [ 27.466489] page dumped because: kasan: bad access detected [ 27.467061] [ 27.467406] Memory state around the buggy address: [ 27.468023] ffff888102964c80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.468819] ffff888102964d00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.469447] >ffff888102964d80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.470223] ^ [ 27.470938] ffff888102964e00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc [ 27.471717] ffff888102964e80: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc [ 27.472475] ==================================================================