syzkaller login: [ 30.813500] BUG: Bad rss-counter state mm:000000003d53a006 type:MM_FILEPAGES val:33 [ 30.814750] BUG: Bad rss-counter state mm:000000003d53a006 type:MM_ANONPAGES val:22 [ 30.861215] ================================================================== [ 30.862351] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.863691] Read of size 8 at addr ffff88800e21f140 by task sshd/221 [ 30.864664] [ 30.864931] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.866017] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.867263] Call Trace: [ 30.867662] [ 30.868012] dump_stack_lvl+0x91/0xf0 [ 30.868534] print_report+0xcc/0x620 [ 30.869033] ? __virt_addr_valid+0x102/0x340 [ 30.869591] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.870218] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.870850] kasan_report+0xbe/0xf0 [ 30.871347] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.871965] vma_interval_tree_remove+0xc75/0xec0 [ 30.872572] vma_prepare+0xc54/0x11a0 [ 30.873055] __split_vma+0x5af/0x950 [ 30.873542] ? __pfx___split_vma+0x10/0x10 [ 30.874080] ? find_held_lock+0x2c/0x110 [ 30.874620] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.875218] ? lock_is_held_type+0x9f/0x120 [ 30.875763] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.876387] ? mtree_range_walk+0x632/0x900 [ 30.876937] ? mas_walk+0x5c7/0x7c0 [ 30.877414] do_vmi_munmap+0x1f1/0x2b0 [ 30.877917] mmap_region+0x1f9/0x2660 [ 30.878413] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.878924] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.879647] ? __pfx_lock_acquire+0x10/0x10 [ 30.880178] ? __pfx_mmap_region+0x10/0x10 [ 30.880714] ? security_mmap_addr+0x7d/0xa0 [ 30.881251] ? get_unmapped_area+0x1f5/0x3f0 [ 30.881803] do_mmap+0x854/0xf00 [ 30.882240] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.882735] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.883308] ksys_mmap_pgoff+0x3af/0x500 [ 30.883822] do_syscall_64+0x3f/0x90 [ 30.884302] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.884949] RIP: 0033:0x7f0ace744d82 [ 30.885412] 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 [ 30.887556] RSP: 002b:00007fff382df188 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.888459] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0ace744d82 [ 30.889306] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0acdb7e000 [ 30.890157] RBP: 00007f0acdb7e000 R08: 0000000000000009 R09: 0000000000001000 [ 30.891006] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562bdd2dbec0 [ 30.891872] R13: 00007fff382df1a0 R14: 00007fff382df1d0 R15: 00007fff382df530 [ 30.892726] [ 30.893015] [ 30.893232] Allocated by task 214: [ 30.893660] kasan_save_stack+0x22/0x50 [ 30.894168] kasan_set_track+0x25/0x30 [ 30.894662] __kasan_slab_alloc+0x59/0x70 [ 30.895215] kmem_cache_alloc+0x16b/0x370 [ 30.895744] vm_area_dup+0x20/0x160 [ 30.896198] __split_vma+0x170/0x950 [ 30.896671] split_vma+0xc6/0x110 [ 30.897118] mprotect_fixup+0x8d2/0xb30 [ 30.897633] do_mprotect_pkey+0x87e/0xd40 [ 30.898156] __x64_sys_mprotect+0x78/0xc0 [ 30.898678] do_syscall_64+0x3f/0x90 [ 30.899153] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.899818] [ 30.900037] Freed by task 214: [ 30.900429] kasan_save_stack+0x22/0x50 [ 30.900931] kasan_set_track+0x25/0x30 [ 30.901428] kasan_save_free_info+0x2b/0x50 [ 30.901959] __kasan_slab_free+0x10a/0x190 [ 30.902494] kmem_cache_free+0x10d/0x4d0 [ 30.903000] rcu_core+0x8c8/0x2860 [ 30.903470] __do_softirq+0x1b7/0x7d4 [ 30.904001] [ 30.904218] Last potentially related work creation: [ 30.904800] kasan_save_stack+0x22/0x50 [ 30.905303] __kasan_record_aux_stack+0x8e/0xa0 [ 30.905880] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.906523] remove_vma+0x139/0x170 [ 30.906975] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.907544] do_vmi_munmap+0x1f1/0x2b0 [ 30.908029] __vm_munmap+0x138/0x3a0 [ 30.908506] __x64_sys_munmap+0x59/0x80 [ 30.909005] do_syscall_64+0x3f/0x90 [ 30.909478] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.910121] [ 30.910340] Second to last potentially related work creation: [ 30.911020] kasan_save_stack+0x22/0x50 [ 30.911543] __kasan_record_aux_stack+0x8e/0xa0 [ 30.912123] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.912771] remove_vma+0x139/0x170 [ 30.913232] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.913792] do_vmi_munmap+0x1f1/0x2b0 [ 30.914281] __vm_munmap+0x138/0x3a0 [ 30.914751] elf_map+0x26f/0x310 [ 30.915214] load_elf_binary+0xd82/0x5030 [ 30.915754] bprm_execve+0x803/0x1940 [ 30.916225] do_execveat_common+0x734/0x8e0 [ 30.916756] __x64_sys_execve+0x93/0xc0 [ 30.917247] do_syscall_64+0x3f/0x90 [ 30.917720] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.918373] [ 30.918586] The buggy address belongs to the object at ffff88800e21f0e8 [ 30.918586] which belongs to the cache vm_area_struct of size 168 [ 30.920048] The buggy address is located 88 bytes inside of [ 30.920048] freed 168-byte region [ffff88800e21f0e8, ffff88800e21f190) [ 30.921497] [ 30.921716] The buggy address belongs to the physical page: [ 30.922367] page:00000000f1a6b73f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe21f [ 30.923463] memcg:ffff88800961bb01 [ 30.923889] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.924533] page_type: 0xffffffff() [ 30.924987] raw: 0100000000000200 ffff8880087a0c80 ffffea0000366200 dead000000000004 [ 30.925907] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800961bb01 [ 30.926813] page dumped because: kasan: bad access detected [ 30.927490] [ 30.927708] Memory state around the buggy address: [ 30.928286] ffff88800e21f000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.929170] ffff88800e21f080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.930042] >ffff88800e21f100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.930905] ^ [ 30.931552] ffff88800e21f180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.932407] ffff88800e21f200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.933255] ================================================================== [ 30.934175] Disabling lock debugging due to kernel taint [ 32.900460] BUG: Bad rss-counter state mm:000000003fdce459 type:MM_FILEPAGES val:33 [ 32.901371] BUG: Bad rss-counter state mm:000000003fdce459 type:MM_ANONPAGES val:22 [ 33.441092] BUG: Bad rss-counter state mm:000000003eee510d type:MM_FILEPAGES val:33 [ 33.442266] BUG: Bad rss-counter state mm:000000003eee510d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:5628' (ECDSA) to the list of known hosts. 2023/06/20 11:55:17 fuzzer started 2023/06/20 11:55:17 dialing manager at localhost:36067 2023/06/20 11:55:17 checking machine... 2023/06/20 11:55:17 checking revisions... [ 34.069102] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:55:17 testing simple program... [ 34.121526] cgroup: Unknown subsys name 'net' [ 34.160135] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:55:16 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff8880192a4000 RCX=0000000000000000 RDX=ffff88801819d1c0 RSI=ffffffff8186bf84 RDI=ffff888009a4b180 RBP=ffff888009a4b180 RSP=ffff88801601fdd8 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=0000000000000008 R13=ffff888009a4b1d0 R14=ffff8880190e0468 R15=ffff8880192a4000 RIP=ffffffff819d23f4 RFL=00000293 [--S-A-C] 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 00007fe589518900 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=00007fe589acf618 CR3=000000000e0d6000 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=563412feff00545000000000000080fe XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff81288ac4 RDX=dffffc0000000000 RSI=000000000000288a RDI=ffff88806cf09a98 RBP=ffff88806cf09af0 RSP=ffff88806cf09a28 R8 =ffffffff864b381e R9 =ffff88806cf09ad8 R10=0000000000038001 R11=00000000000b547f R12=ffff88806cf09af8 R13=ffff88806cf09ae0 R14=ffff88806cf09ad9 R15=ffff88806cf09a98 RIP=ffffffff81130764 RFL=00000283 [--S---C] 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 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=00007f5fcbfcb000 CR3=000000000cca0000 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=dc2e4fb446f6299555425f7b2863929c XMM02=ec2efd57dc4c00df000000000011cd20 XMM03=bd60fa9c918c8896000000000011cdf0 XMM04=7ab3323c1cd99e9700000000000ae988 XMM05=59d5b690e0af863b0000000000132ab8 XMM06=316b9d43f645b0960000000000131920 XMM07=e042d86d42eb936e00000000001217b0 XMM08=bd60fa9c918c8896000000000011cdf0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000