syzkaller login: [ 30.660325] BUG: Bad rss-counter state mm:00000000e99c0c30 type:MM_FILEPAGES val:33 [ 30.661344] BUG: Bad rss-counter state mm:00000000e99c0c30 type:MM_ANONPAGES val:22 [ 30.827403] ================================================================== [ 30.828336] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.829299] Read of size 8 at addr ffff88800f0f0058 by task sshd/222 [ 30.830070] [ 30.830288] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.831285] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.832273] Call Trace: [ 30.832596] [ 30.832881] dump_stack_lvl+0x91/0xf0 [ 30.833383] print_report+0xcc/0x620 [ 30.833871] ? __virt_addr_valid+0x102/0x340 [ 30.834429] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.835072] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.835691] kasan_report+0xbe/0xf0 [ 30.836170] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.836789] vma_interval_tree_remove+0xc75/0xec0 [ 30.837390] vma_prepare+0xc54/0x11a0 [ 30.837874] __split_vma+0x5af/0x950 [ 30.838360] ? __pfx___split_vma+0x10/0x10 [ 30.838910] ? find_held_lock+0x2c/0x110 [ 30.839434] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.840011] ? lock_is_held_type+0x9f/0x120 [ 30.840557] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.841186] ? mtree_range_walk+0x632/0x900 [ 30.841745] ? mas_walk+0x5c7/0x7c0 [ 30.842236] do_vmi_munmap+0x1f1/0x2b0 [ 30.842748] mmap_region+0x1f9/0x2660 [ 30.843235] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.843760] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.844490] ? __pfx_lock_acquire+0x10/0x10 [ 30.845034] ? __pfx_mmap_region+0x10/0x10 [ 30.845566] ? security_mmap_addr+0x7d/0xa0 [ 30.846101] ? get_unmapped_area+0x1f5/0x3f0 [ 30.846663] do_mmap+0x854/0xf00 [ 30.847135] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.847633] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.848215] ksys_mmap_pgoff+0x3af/0x500 [ 30.848724] do_syscall_64+0x3f/0x90 [ 30.849211] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.849878] RIP: 0033:0x7f16c2979d82 [ 30.850343] 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 [ 30.852512] RSP: 002b:00007ffd9f3da2f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.853423] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f16c2979d82 [ 30.854281] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f16c1db3000 [ 30.855136] RBP: 00007f16c1db3000 R08: 0000000000000009 R09: 0000000000001000 [ 30.855994] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556263a1bec0 [ 30.856852] R13: 00007ffd9f3da310 R14: 00007ffd9f3da340 R15: 00007ffd9f3da6a0 [ 30.857719] [ 30.858017] [ 30.858228] Allocated by task 215: [ 30.858660] kasan_save_stack+0x22/0x50 [ 30.859183] kasan_set_track+0x25/0x30 [ 30.859680] __kasan_slab_alloc+0x59/0x70 [ 30.860207] kmem_cache_alloc+0x16b/0x370 [ 30.860727] vm_area_dup+0x20/0x160 [ 30.861191] __split_vma+0x170/0x950 [ 30.861654] split_vma+0xc6/0x110 [ 30.862102] mprotect_fixup+0x8d2/0xb30 [ 30.862606] do_mprotect_pkey+0x87e/0xd40 [ 30.863141] __x64_sys_mprotect+0x78/0xc0 [ 30.863665] do_syscall_64+0x3f/0x90 [ 30.864140] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.864794] [ 30.865015] Freed by task 215: [ 30.865411] kasan_save_stack+0x22/0x50 [ 30.865913] kasan_set_track+0x25/0x30 [ 30.866412] kasan_save_free_info+0x2b/0x50 [ 30.866972] __kasan_slab_free+0x10a/0x190 [ 30.867506] kmem_cache_free+0x10d/0x4d0 [ 30.868023] rcu_core+0x8c8/0x2860 [ 30.868476] __do_softirq+0x1b7/0x7d4 [ 30.868954] [ 30.869181] Last potentially related work creation: [ 30.869779] kasan_save_stack+0x22/0x50 [ 30.870284] __kasan_record_aux_stack+0x8e/0xa0 [ 30.870884] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.871528] remove_vma+0x139/0x170 [ 30.871990] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.872557] do_vmi_munmap+0x1f1/0x2b0 [ 30.873056] __vm_munmap+0x138/0x3a0 [ 30.873522] __x64_sys_munmap+0x59/0x80 [ 30.874017] do_syscall_64+0x3f/0x90 [ 30.874498] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.875154] [ 30.875376] The buggy address belongs to the object at ffff88800f0f0000 [ 30.875376] which belongs to the cache vm_area_struct of size 168 [ 30.876865] The buggy address is located 88 bytes inside of [ 30.876865] freed 168-byte region [ffff88800f0f0000, ffff88800f0f00a8) [ 30.878285] [ 30.878500] The buggy address belongs to the physical page: [ 30.879171] page:00000000e7fa3691 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf0f0 [ 30.880256] memcg:ffff88800d3d7101 [ 30.880682] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.881332] page_type: 0xffffffff() [ 30.881785] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.882731] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d3d7101 [ 30.883653] page dumped because: kasan: bad access detected [ 30.884326] [ 30.884545] Memory state around the buggy address: [ 30.885127] ffff88800f0eff00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 30.886009] ffff88800f0eff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.886881] >ffff88800f0f0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.887750] ^ [ 30.888481] ffff88800f0f0080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.889349] ffff88800f0f0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.890209] ================================================================== [ 30.891222] Disabling lock debugging due to kernel taint [ 33.306012] BUG: Bad rss-counter state mm:00000000049f98ec type:MM_FILEPAGES val:33 [ 33.307120] BUG: Bad rss-counter state mm:00000000049f98ec type:MM_ANONPAGES val:22 [ 33.721789] BUG: Bad rss-counter state mm:00000000c4b5bea5 type:MM_FILEPAGES val:33 [ 33.723059] BUG: Bad rss-counter state mm:00000000c4b5bea5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:39715' (ECDSA) to the list of known hosts. 2023/06/21 04:20:38 fuzzer started 2023/06/21 04:20:39 dialing manager at localhost:36067 2023/06/21 04:20:39 checking machine... 2023/06/21 04:20:39 checking revisions... [ 34.452225] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:20:39 testing simple program... [ 34.483175] cgroup: Unknown subsys name 'net' [ 34.523291] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:20:38 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff85ba4d00 RCX=ffffffff8452a764 RDX=1ffffffff0b749a1 RSI=0000000000000008 RDI=ffffffff85ba4d08 RBP=ffff8880158b8001 RSP=ffff88800fb9fbc8 R8 =0000000000000001 R9 =fffffbfff0b749a1 R10=ffffffff85ba4d0f R11=00000000000b6a61 R12=1ffff11001f73f7a R13=dffffc0000000000 R14=ffff8880158b8000 R15=ffffffff85ba4d08 RIP=ffffffff8452a6ee RFL=00000286 [--S--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 00007f2235431900 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=00007fff23121000 CR3=000000000cc3c000 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=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007f1416ed6800 CR3=000000000d4be000 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=97d5856c4597bcae364f88e522344579 XMM02=ec2efd57dc4c00df0000000000119e10 XMM03=a828c525b5b50dff0000000000119ee0 XMM04=7f193e0d7165495700000000000ae988 XMM05=59d5b690e0af863b0000000000131118 XMM06=0edd405ff80674cf000000000012ff80 XMM07=e042d86d42eb936e00000000001215c0 XMM08=a828c525b5b50dff0000000000119ee0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000