Date
July 1, 2025, 11:08 a.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 18.157445] ================================================================== [ 18.157903] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x2a4/0x2f0 [ 18.157976] Write of size 1 at addr fff00000c7729f00 by task kunit_try_catch/145 [ 18.158030] [ 18.158103] CPU: 1 UID: 0 PID: 145 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT [ 18.158209] Tainted: [B]=BAD_PAGE, [N]=TEST [ 18.158237] Hardware name: linux,dummy-virt (DT) [ 18.158270] Call trace: [ 18.158387] show_stack+0x20/0x38 (C) [ 18.158452] dump_stack_lvl+0x8c/0xd0 [ 18.158534] print_report+0x118/0x608 [ 18.158649] kasan_report+0xdc/0x128 [ 18.158697] __asan_report_store1_noabort+0x20/0x30 [ 18.158778] kmalloc_big_oob_right+0x2a4/0x2f0 [ 18.158828] kunit_try_run_case+0x170/0x3f0 [ 18.158878] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.158954] kthread+0x328/0x630 [ 18.159000] ret_from_fork+0x10/0x20 [ 18.159051] [ 18.159269] Allocated by task 145: [ 18.159316] kasan_save_stack+0x3c/0x68 [ 18.159470] kasan_save_track+0x20/0x40 [ 18.159622] kasan_save_alloc_info+0x40/0x58 [ 18.159702] __kasan_kmalloc+0xd4/0xd8 [ 18.159751] __kmalloc_cache_noprof+0x16c/0x3c0 [ 18.159793] kmalloc_big_oob_right+0xb8/0x2f0 [ 18.159833] kunit_try_run_case+0x170/0x3f0 [ 18.159899] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 18.159949] kthread+0x328/0x630 [ 18.159983] ret_from_fork+0x10/0x20 [ 18.160022] [ 18.160043] The buggy address belongs to the object at fff00000c7728000 [ 18.160043] which belongs to the cache kmalloc-8k of size 8192 [ 18.160107] The buggy address is located 0 bytes to the right of [ 18.160107] allocated 7936-byte region [fff00000c7728000, fff00000c7729f00) [ 18.160316] [ 18.160420] The buggy address belongs to the physical page: [ 18.160513] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x107728 [ 18.160604] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 18.160663] flags: 0xbfffe0000000040(head|node=0|zone=2|lastcpupid=0x1ffff) [ 18.160736] page_type: f5(slab) [ 18.160802] raw: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 18.160879] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 18.160932] head: 0bfffe0000000040 fff00000c0002280 dead000000000122 0000000000000000 [ 18.160983] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 18.161062] head: 0bfffe0000000003 ffffc1ffc31dca01 00000000ffffffff 00000000ffffffff [ 18.161318] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 18.161424] page dumped because: kasan: bad access detected [ 18.161559] [ 18.161646] Memory state around the buggy address: [ 18.161714] fff00000c7729e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.161780] fff00000c7729e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.161826] >fff00000c7729f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.161888] ^ [ 18.161918] fff00000c7729f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.161963] fff00000c772a000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 18.162169] ==================================================================
[ 11.006861] ================================================================== [ 11.007396] BUG: KASAN: slab-out-of-bounds in kmalloc_big_oob_right+0x316/0x370 [ 11.007787] Write of size 1 at addr ffff8881039c9f00 by task kunit_try_catch/161 [ 11.008083] [ 11.008281] CPU: 1 UID: 0 PID: 161 Comm: kunit_try_catch Tainted: G B N 6.16.0-rc4 #1 PREEMPT(voluntary) [ 11.008331] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.008343] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.008363] Call Trace: [ 11.008387] <TASK> [ 11.008447] dump_stack_lvl+0x73/0xb0 [ 11.008480] print_report+0xd1/0x650 [ 11.008514] ? __virt_addr_valid+0x1db/0x2d0 [ 11.008539] ? kmalloc_big_oob_right+0x316/0x370 [ 11.008560] ? kasan_complete_mode_report_info+0x2a/0x200 [ 11.008581] ? kmalloc_big_oob_right+0x316/0x370 [ 11.008604] kasan_report+0x141/0x180 [ 11.008626] ? kmalloc_big_oob_right+0x316/0x370 [ 11.008651] __asan_report_store1_noabort+0x1b/0x30 [ 11.008671] kmalloc_big_oob_right+0x316/0x370 [ 11.008693] ? __pfx_kmalloc_big_oob_right+0x10/0x10 [ 11.008714] ? __schedule+0x10cc/0x2b60 [ 11.008751] ? __pfx_read_tsc+0x10/0x10 [ 11.008772] ? ktime_get_ts64+0x86/0x230 [ 11.008796] kunit_try_run_case+0x1a5/0x480 [ 11.008822] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.008844] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.008867] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.008888] ? __kthread_parkme+0x82/0x180 [ 11.008908] ? preempt_count_sub+0x50/0x80 [ 11.008933] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.008955] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.008977] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.008998] kthread+0x337/0x6f0 [ 11.009016] ? trace_preempt_on+0x20/0xc0 [ 11.009040] ? __pfx_kthread+0x10/0x10 [ 11.009059] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.009078] ? calculate_sigpending+0x7b/0xa0 [ 11.009101] ? __pfx_kthread+0x10/0x10 [ 11.009121] ret_from_fork+0x116/0x1d0 [ 11.009138] ? __pfx_kthread+0x10/0x10 [ 11.009157] ret_from_fork_asm+0x1a/0x30 [ 11.009188] </TASK> [ 11.009199] [ 11.018310] Allocated by task 161: [ 11.018521] kasan_save_stack+0x45/0x70 [ 11.018741] kasan_save_track+0x18/0x40 [ 11.019015] kasan_save_alloc_info+0x3b/0x50 [ 11.019350] __kasan_kmalloc+0xb7/0xc0 [ 11.019507] __kmalloc_cache_noprof+0x189/0x420 [ 11.019796] kmalloc_big_oob_right+0xa9/0x370 [ 11.020167] kunit_try_run_case+0x1a5/0x480 [ 11.020322] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.020525] kthread+0x337/0x6f0 [ 11.020648] ret_from_fork+0x116/0x1d0 [ 11.020818] ret_from_fork_asm+0x1a/0x30 [ 11.021014] [ 11.021155] The buggy address belongs to the object at ffff8881039c8000 [ 11.021155] which belongs to the cache kmalloc-8k of size 8192 [ 11.021722] The buggy address is located 0 bytes to the right of [ 11.021722] allocated 7936-byte region [ffff8881039c8000, ffff8881039c9f00) [ 11.022599] [ 11.022710] The buggy address belongs to the physical page: [ 11.023104] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1039c8 [ 11.023480] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 11.023750] flags: 0x200000000000040(head|node=0|zone=2) [ 11.024058] page_type: f5(slab) [ 11.024236] raw: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 11.024830] raw: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 11.025127] head: 0200000000000040 ffff888100042280 dead000000000122 0000000000000000 [ 11.025607] head: 0000000000000000 0000000080020002 00000000f5000000 0000000000000000 [ 11.026150] head: 0200000000000003 ffffea00040e7201 00000000ffffffff 00000000ffffffff [ 11.026576] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 [ 11.026962] page dumped because: kasan: bad access detected [ 11.027518] [ 11.027675] Memory state around the buggy address: [ 11.027882] ffff8881039c9e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.028419] ffff8881039c9e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 11.028800] >ffff8881039c9f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.029159] ^ [ 11.029324] ffff8881039c9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.029680] ffff8881039ca000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.029903] ==================================================================