syzkaller login: [ 30.678944] BUG: Bad rss-counter state mm:0000000053287ad8 type:MM_FILEPAGES val:33 [ 30.680648] BUG: Bad rss-counter state mm:0000000053287ad8 type:MM_ANONPAGES val:22 [ 30.829561] ================================================================== [ 30.830632] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.831747] Read of size 8 at addr ffff888019de05c8 by task sshd/221 [ 30.832759] [ 30.833023] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.834076] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.835221] Call Trace: [ 30.835601] [ 30.835946] dump_stack_lvl+0x91/0xf0 [ 30.836537] print_report+0xcc/0x620 [ 30.837116] ? __virt_addr_valid+0x102/0x340 [ 30.837784] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.838514] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.839254] kasan_report+0xbe/0xf0 [ 30.839820] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.840586] vma_interval_tree_remove+0xc75/0xec0 [ 30.841328] vma_prepare+0xc54/0x11a0 [ 30.841924] __split_vma+0x5af/0x950 [ 30.842396] ? __pfx___split_vma+0x10/0x10 [ 30.842926] ? find_held_lock+0x2c/0x110 [ 30.843448] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.844013] ? lock_is_held_type+0x9f/0x120 [ 30.844552] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.845160] ? mtree_range_walk+0x632/0x900 [ 30.845718] ? mas_walk+0x5c7/0x7c0 [ 30.846190] do_vmi_munmap+0x1f1/0x2b0 [ 30.846679] mmap_region+0x1f9/0x2660 [ 30.847157] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.847669] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.848380] ? __pfx_lock_acquire+0x10/0x10 [ 30.848912] ? __pfx_mmap_region+0x10/0x10 [ 30.849451] ? security_mmap_addr+0x7d/0xa0 [ 30.849983] ? get_unmapped_area+0x1f5/0x3f0 [ 30.850533] do_mmap+0x854/0xf00 [ 30.850971] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.851462] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.852028] ksys_mmap_pgoff+0x3af/0x500 [ 30.852534] do_syscall_64+0x3f/0x90 [ 30.853011] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.853675] RIP: 0033:0x7f2b9df0ad82 [ 30.854129] 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 [ 30.856266] RSP: 002b:00007ffcabed6df8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.857177] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2b9df0ad82 [ 30.858037] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2b9d344000 [ 30.858886] RBP: 00007f2b9d344000 R08: 0000000000000009 R09: 0000000000001000 [ 30.859726] R10: 0000000000000812 R11: 0000000000000206 R12: 00005629e3b02b20 [ 30.860573] R13: 00007ffcabed6e10 R14: 00007ffcabed6e40 R15: 00007ffcabed71a0 [ 30.861448] [ 30.861748] [ 30.861967] Allocated by task 214: [ 30.862398] kasan_save_stack+0x22/0x50 [ 30.862914] kasan_set_track+0x25/0x30 [ 30.863409] __kasan_slab_alloc+0x59/0x70 [ 30.863940] kmem_cache_alloc+0x16b/0x370 [ 30.864454] vm_area_dup+0x20/0x160 [ 30.864910] __split_vma+0x170/0x950 [ 30.865382] split_vma+0xc6/0x110 [ 30.865837] mprotect_fixup+0x8d2/0xb30 [ 30.866341] do_mprotect_pkey+0x87e/0xd40 [ 30.866868] __x64_sys_mprotect+0x78/0xc0 [ 30.867400] do_syscall_64+0x3f/0x90 [ 30.867880] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.868527] [ 30.868748] Freed by task 214: [ 30.869146] kasan_save_stack+0x22/0x50 [ 30.869659] kasan_set_track+0x25/0x30 [ 30.870156] kasan_save_free_info+0x2b/0x50 [ 30.870690] __kasan_slab_free+0x10a/0x190 [ 30.871227] kmem_cache_free+0x10d/0x4d0 [ 30.871739] rcu_core+0x8c8/0x2860 [ 30.872181] __do_softirq+0x1b7/0x7d4 [ 30.872653] [ 30.872877] Last potentially related work creation: [ 30.873486] kasan_save_stack+0x22/0x50 [ 30.873997] __kasan_record_aux_stack+0x8e/0xa0 [ 30.874572] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.875232] remove_vma+0x139/0x170 [ 30.875689] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.876247] do_vmi_munmap+0x1f1/0x2b0 [ 30.876735] __vm_munmap+0x138/0x3a0 [ 30.877202] __x64_sys_munmap+0x59/0x80 [ 30.877715] do_syscall_64+0x3f/0x90 [ 30.878199] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.878847] [ 30.879062] The buggy address belongs to the object at ffff888019de0570 [ 30.879062] which belongs to the cache vm_area_struct of size 168 [ 30.880529] The buggy address is located 88 bytes inside of [ 30.880529] freed 168-byte region [ffff888019de0570, ffff888019de0618) [ 30.881956] [ 30.882174] The buggy address belongs to the physical page: [ 30.882838] page:0000000011908246 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19de0 [ 30.883933] memcg:ffff888019fbdd01 [ 30.884361] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.885010] page_type: 0xffffffff() [ 30.885468] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.886398] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019fbdd01 [ 30.887306] page dumped because: kasan: bad access detected [ 30.887967] [ 30.888184] Memory state around the buggy address: [ 30.888763] ffff888019de0480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.889645] ffff888019de0500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.890507] >ffff888019de0580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.891370] ^ [ 30.892038] ffff888019de0600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.892894] ffff888019de0680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.893754] ================================================================== [ 30.894741] Disabling lock debugging due to kernel taint [ 32.863335] BUG: Bad rss-counter state mm:00000000f51c9342 type:MM_FILEPAGES val:33 [ 32.864491] BUG: Bad rss-counter state mm:00000000f51c9342 type:MM_ANONPAGES val:22 [ 33.253706] BUG: Bad rss-counter state mm:000000005a705e18 type:MM_FILEPAGES val:33 [ 33.254730] BUG: Bad rss-counter state mm:000000005a705e18 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:52568' (ECDSA) to the list of known hosts. 2023/06/20 12:14:08 fuzzer started 2023/06/20 12:14:08 dialing manager at localhost:36067 2023/06/20 12:14:08 checking machine... 2023/06/20 12:14:08 checking revisions... [ 33.975249] kmemleak: Automatic memory scanning thread ended 2023/06/20 12:14:09 testing simple program... [ 34.015585] cgroup: Unknown subsys name 'net' [ 34.053383] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:14:08 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff864b202c RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff888019c3f8a8 RSP=ffff888019c3f7e0 R8 =ffffffff864b2030 R9 =ffff888019c3f890 R10=0000000000038001 R11=00000000000b5080 R12=ffff888019c3f8b0 R13=ffff888019c3f898 R14=ffff888019c3f891 R15=ffff888019c3f850 RIP=ffffffff81130ad6 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 00007f594e939900 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=00007ffd28e01000 CR3=000000000961e000 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=00007f0fbab50110 CR3=000000000b388000 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=9db819694fe13f96584f52516ae10ef8 XMM02=ec2efd57dc4c00df000000000011d6d0 XMM03=82720de5c3b3dc28000000000011d7a0 XMM04=bdacee91988dfdc200000000000ae988 XMM05=9791e6282a922c290000000000131ee0 XMM06=c291bd5c70af25b90000000000131b68 XMM07=e042d86d42eb936e0000000000122088 XMM08=82720de5c3b3dc28000000000011d7a0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000