[ 28.465483] BUG: Bad rss-counter state mm:0000000046b8e657 type:MM_FILEPAGES val:33 [ 28.466675] BUG: Bad rss-counter state mm:0000000046b8e657 type:MM_ANONPAGES val:22 [ 28.508203] ================================================================== [ 28.509155] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.510077] Read of size 8 at addr ffff88800d7bd058 by task sshd/219 [ 28.510826] [ 28.511040] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 28.511902] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.512868] Call Trace: [ 28.513187] [ 28.513468] dump_stack_lvl+0x91/0xf0 [ 28.513948] print_report+0xcc/0x620 [ 28.514430] ? __virt_addr_valid+0x102/0x340 [ 28.514970] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.515656] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.516267] kasan_report+0xbe/0xf0 [ 28.516762] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.517391] vma_interval_tree_remove+0xc75/0xec0 [ 28.517984] vma_prepare+0xc54/0x11a0 [ 28.518461] __split_vma+0x5af/0x950 [ 28.518923] ? __pfx___split_vma+0x10/0x10 [ 28.519457] ? find_held_lock+0x2c/0x110 [ 28.519971] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.520524] ? lock_is_held_type+0x9f/0x120 [ 28.521064] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.521663] ? mtree_range_walk+0x632/0x900 [ 28.522207] ? mas_walk+0x5c7/0x7c0 [ 28.522674] do_vmi_munmap+0x1f1/0x2b0 [ 28.523157] mmap_region+0x1f9/0x2660 [ 28.523635] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.524139] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.524854] ? __pfx_lock_acquire+0x10/0x10 [ 28.525376] ? __pfx_mmap_region+0x10/0x10 [ 28.525900] ? security_mmap_addr+0x7d/0xa0 [ 28.526421] ? get_unmapped_area+0x1f5/0x3f0 [ 28.526959] do_mmap+0x854/0xf00 [ 28.527389] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.527875] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.528431] ksys_mmap_pgoff+0x3af/0x500 [ 28.528944] do_syscall_64+0x3f/0x90 [ 28.529413] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.530046] RIP: 0033:0x7f06039add82 [ 28.530496] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 28.532605] RSP: 002b:00007fff7bdf3288 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.533503] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f06039add82 [ 28.534341] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0602de7000 [ 28.535182] RBP: 00007f0602de7000 R08: 0000000000000009 R09: 0000000000001000 [ 28.536018] R10: 0000000000000812 R11: 0000000000000206 R12: 00005616f01de980 [ 28.536868] R13: 00007fff7bdf32a0 R14: 00007fff7bdf32d0 R15: 00007fff7bdf3630 [ 28.537716] [ 28.538006] [ 28.538221] Allocated by task 212: [ 28.538644] kasan_save_stack+0x22/0x50 [ 28.539143] kasan_set_track+0x25/0x30 [ 28.539627] __kasan_slab_alloc+0x59/0x70 [ 28.540144] kmem_cache_alloc+0x16b/0x370 [ 28.540649] vm_area_dup+0x20/0x160 [ 28.541104] __split_vma+0x170/0x950 [ 28.541561] split_vma+0xc6/0x110 [ 28.541994] mprotect_fixup+0x8d2/0xb30 [ 28.542490] do_mprotect_pkey+0x87e/0xd40 [ 28.543003] __x64_sys_mprotect+0x78/0xc0 [ 28.543514] do_syscall_64+0x3f/0x90 [ 28.543982] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.544610] [ 28.544843] Freed by task 212: [ 28.545231] kasan_save_stack+0x22/0x50 [ 28.545724] kasan_set_track+0x25/0x30 [ 28.546209] kasan_save_free_info+0x2b/0x50 [ 28.546730] __kasan_slab_free+0x10a/0x190 [ 28.547253] kmem_cache_free+0x10d/0x4d0 [ 28.547753] rcu_core+0x8c8/0x2860 [ 28.548192] __do_softirq+0x1b7/0x7d4 [ 28.548668] [ 28.548884] Last potentially related work creation: [ 28.549455] kasan_save_stack+0x22/0x50 [ 28.549951] __kasan_record_aux_stack+0x8e/0xa0 [ 28.550515] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.551153] remove_vma+0x139/0x170 [ 28.551598] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.552147] do_vmi_munmap+0x1f1/0x2b0 [ 28.552626] __vm_munmap+0x138/0x3a0 [ 28.553106] __x64_sys_munmap+0x59/0x80 [ 28.553595] do_syscall_64+0x3f/0x90 [ 28.554064] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.554702] [ 28.554913] Second to last potentially related work creation: [ 28.555583] kasan_save_stack+0x22/0x50 [ 28.556079] __kasan_record_aux_stack+0x8e/0xa0 [ 28.556643] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.557289] remove_vma+0x139/0x170 [ 28.557731] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.558281] do_vmi_munmap+0x1f1/0x2b0 [ 28.558757] mmap_region+0x1f9/0x2660 [ 28.559228] do_mmap+0x854/0xf00 [ 28.559652] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.560138] ksys_mmap_pgoff+0x3af/0x500 [ 28.560631] do_syscall_64+0x3f/0x90 [ 28.561120] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.561748] [ 28.561960] The buggy address belongs to the object at ffff88800d7bd000 [ 28.561960] which belongs to the cache vm_area_struct of size 168 [ 28.563394] The buggy address is located 88 bytes inside of [ 28.563394] freed 168-byte region [ffff88800d7bd000, ffff88800d7bd0a8) [ 28.564781] [ 28.565007] The buggy address belongs to the physical page: [ 28.565652] page:00000000c46a888b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd7bd [ 28.566721] memcg:ffff888009688501 [ 28.567138] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.567771] page_type: 0xffffffff() Debian GNU/Li[ 28.568221] raw: 0100000000000200 ffff88800879fc80 ffffea000039a740 dead000000000006 nux 11 syzkaller[ 28.569343] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888009688501 ttyS0 syzkal[ 28.570394] page dumped because: kasan: bad access detected ler[ 28.571223] [ 28.571498] Memory state around the buggy address: [ 28.572076] ffff88800d7bcf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.572952] ffff88800d7bcf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.573790] >ffff88800d7bd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb login: [ 28.574630] ^ [ 28.575421] ffff88800d7bd080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 28.576301] ffff88800d7bd100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.577203] ================================================================== [ 28.578227] Disabling lock debugging due to kernel taint [ 30.334236] BUG: Bad rss-counter state mm:00000000c7643470 type:MM_FILEPAGES val:33 [ 30.335169] BUG: Bad rss-counter state mm:00000000c7643470 type:MM_ANONPAGES val:22 [ 30.698836] BUG: Bad rss-counter state mm:0000000099005b5f type:MM_FILEPAGES val:33 [ 30.699425] BUG: Bad rss-counter state mm:0000000099005b5f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:29365' (ECDSA) to the list of known hosts. 2023/06/19 22:04:09 fuzzer started 2023/06/19 22:04:10 dialing manager at localhost:44161 2023/06/19 22:04:10 checking machine... 2023/06/19 22:04:10 checking revisions... [ 31.345841] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:04:10 testing simple program... [ 31.397947] cgroup: Unknown subsys name 'net' [ 31.450221] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:04:05 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=0000000000000000 RSI=0000000000000015 RDI=ffff88806ce09bd0 RBP=ffffffff813782a8 RSP=ffff88806ce09b60 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000001 R13=0000000000000000 R14=ffff88806ce09bd0 R15=ffff88801c971b30 RIP=ffffffff813ad5a0 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f2ec48c4900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007fff05573000 CR3=0000000016cf8000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f791de28328 CR3=000000000c7f8000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=f20ba466ce272ea6c24c68d076f1abae XMM02=000000000011f850ec2efd57dc4c00df XMM03=00000000001234f82d07da78bbaffc34 XMM04=87357f462727d73500000000000ae988 XMM05=dfcdbad4f1609c370000000000134080 XMM06=1a78c9b705396ef60000000000132af0 XMM07=e042d86d42eb936e00000000001237d0 XMM08=2d07da78bbaffc34000000000011f8b0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000