syzkaller login: [ 30.670349] BUG: Bad rss-counter state mm:0000000019c07c3a type:MM_FILEPAGES val:33 [ 30.671420] BUG: Bad rss-counter state mm:0000000019c07c3a type:MM_ANONPAGES val:22 [ 30.836582] ================================================================== [ 30.837501] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.838467] Read of size 8 at addr ffff88800ea1e310 by task sshd/220 [ 30.839268] [ 30.839554] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.840432] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.841443] Call Trace: [ 30.841772] [ 30.842058] dump_stack_lvl+0x91/0xf0 [ 30.842559] print_report+0xcc/0x620 [ 30.843078] ? __virt_addr_valid+0x102/0x340 [ 30.843644] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.844285] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.844918] kasan_report+0xbe/0xf0 [ 30.845402] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.846034] vma_interval_tree_remove+0xc75/0xec0 [ 30.846634] vma_prepare+0xc54/0x11a0 [ 30.847131] __split_vma+0x5af/0x950 [ 30.847609] ? __pfx___split_vma+0x10/0x10 [ 30.848145] ? find_held_lock+0x2c/0x110 [ 30.848670] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.849248] ? lock_is_held_type+0x9f/0x120 [ 30.849798] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.850421] ? mtree_range_walk+0x632/0x900 [ 30.850998] ? mas_walk+0x5c7/0x7c0 [ 30.851483] do_vmi_munmap+0x1f1/0x2b0 [ 30.851987] mmap_region+0x1f9/0x2660 [ 30.852476] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.852992] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.853717] ? __pfx_lock_acquire+0x10/0x10 [ 30.854253] ? __pfx_mmap_region+0x10/0x10 [ 30.854811] ? security_mmap_addr+0x7d/0xa0 [ 30.855353] ? get_unmapped_area+0x1f5/0x3f0 [ 30.855916] do_mmap+0x854/0xf00 [ 30.856363] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.856856] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.857417] ksys_mmap_pgoff+0x3af/0x500 [ 30.857935] do_syscall_64+0x3f/0x90 [ 30.858418] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.859079] RIP: 0033:0x7f8bb4e47d82 [ 30.859534] 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 [ 30.861649] RSP: 002b:00007ffde3808148 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.862554] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8bb4e47d82 [ 30.863418] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8bb4281000 [ 30.864265] RBP: 00007f8bb4281000 R08: 0000000000000009 R09: 0000000000001000 [ 30.865121] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a1dd1acf70 [ 30.865969] R13: 00007ffde3808160 R14: 00007ffde3808190 R15: 00007ffde38084f0 [ 30.866843] [ 30.867136] [ 30.867357] Allocated by task 213: [ 30.867790] kasan_save_stack+0x22/0x50 [ 30.868307] kasan_set_track+0x25/0x30 [ 30.868814] __kasan_slab_alloc+0x59/0x70 [ 30.869341] kmem_cache_alloc+0x16b/0x370 [ 30.869859] vm_area_dup+0x20/0x160 [ 30.870323] __split_vma+0x170/0x950 [ 30.870814] split_vma+0xc6/0x110 [ 30.871259] mprotect_fixup+0x8d2/0xb30 [ 30.871765] do_mprotect_pkey+0x87e/0xd40 [ 30.872301] __x64_sys_mprotect+0x78/0xc0 [ 30.872847] do_syscall_64+0x3f/0x90 [ 30.873338] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.874002] [ 30.874221] Freed by task 213: [ 30.874619] kasan_save_stack+0x22/0x50 [ 30.875148] kasan_set_track+0x25/0x30 [ 30.875640] kasan_save_free_info+0x2b/0x50 [ 30.876171] __kasan_slab_free+0x10a/0x190 [ 30.876717] kmem_cache_free+0x10d/0x4d0 [ 30.877223] rcu_core+0x8c8/0x2860 [ 30.877669] __do_softirq+0x1b7/0x7d4 [ 30.878158] [ 30.878375] Last potentially related work creation: [ 30.878976] kasan_save_stack+0x22/0x50 [ 30.879485] __kasan_record_aux_stack+0x8e/0xa0 [ 30.880064] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.880708] remove_vma+0x139/0x170 [ 30.881166] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.881726] do_vmi_munmap+0x1f1/0x2b0 [ 30.882213] __vm_munmap+0x138/0x3a0 [ 30.882682] __x64_sys_munmap+0x59/0x80 [ 30.883196] do_syscall_64+0x3f/0x90 [ 30.883679] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.884331] [ 30.884549] Second to last potentially related work creation: [ 30.885232] kasan_save_stack+0x22/0x50 [ 30.885735] __kasan_record_aux_stack+0x8e/0xa0 [ 30.886314] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.886978] remove_vma+0x139/0x170 [ 30.887427] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.887986] do_vmi_munmap+0x1f1/0x2b0 [ 30.888480] mmap_region+0x1f9/0x2660 [ 30.888965] do_mmap+0x854/0xf00 [ 30.889402] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.889901] ksys_mmap_pgoff+0x7d/0x500 [ 30.890402] do_syscall_64+0x3f/0x90 [ 30.890899] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.891545] [ 30.891762] The buggy address belongs to the object at ffff88800ea1e2b8 [ 30.891762] which belongs to the cache vm_area_struct of size 168 [ 30.893237] The buggy address is located 88 bytes inside of [ 30.893237] freed 168-byte region [ffff88800ea1e2b8, ffff88800ea1e360) [ 30.894648] [ 30.894888] The buggy address belongs to the physical page: [ 30.895553] page:000000002371398e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xea1e [ 30.896639] memcg:ffff88800e728a01 [ 30.897073] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.897779] page_type: 0xffffffff() [ 30.898235] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 30.899168] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e728a01 [ 30.900069] page dumped because: kasan: bad access detected [ 30.900729] [ 30.900951] Memory state around the buggy address: [ 30.901536] ffff88800ea1e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.902395] ffff88800ea1e280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.903265] >ffff88800ea1e300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.904120] ^ [ 30.904585] ffff88800ea1e380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.905433] ffff88800ea1e400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.906293] ================================================================== [ 30.907272] Disabling lock debugging due to kernel taint [ 32.812177] BUG: Bad rss-counter state mm:00000000a609dbcb type:MM_FILEPAGES val:33 [ 32.813238] BUG: Bad rss-counter state mm:00000000a609dbcb type:MM_ANONPAGES val:22 [ 33.356049] BUG: Bad rss-counter state mm:00000000771c275d type:MM_FILEPAGES val:33 [ 33.357241] BUG: Bad rss-counter state mm:00000000771c275d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2084' (ECDSA) to the list of known hosts. 2023/06/21 07:15:11 fuzzer started 2023/06/21 07:15:11 dialing manager at localhost:36067 2023/06/21 07:15:11 checking machine... 2023/06/21 07:15:11 checking revisions... [ 34.006914] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:15:11 testing simple program... [ 34.059351] cgroup: Unknown subsys name 'net' [ 34.099099] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:15:10 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000100 RCX=0000000000000000 RDX=ffff888014721b40 RSI=ffffffff816500f7 RDI=0000000000000005 RBP=ffff88806ce3501c RSP=ffff8880158c7b60 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6d53 R12=0000000000000000 R13=0000000000000000 R14=ffff88800f9d3000 R15=0000000000000046 RIP=ffffffff814c089b 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f86bd914900 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=00007f86bcd6de80 CR3=000000000c7b8000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=2b40f368db1c09d600000000000ae988 XMM05=4f82aa20a5ea45cd0000000000133d68 XMM06=4fda316b135da52b0000000000132b58 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff83ab1b17 RDX=ffff88800ef71b40 RSI=0000000000000000 RDI=0000000000000005 RBP=0000000000000000 RSP=ffff88800f2b7508 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000097400000974 R12=0000000000000000 R13=000000000000008d R14=dffffc0000000000 R15=ffffffff87f97640 RIP=ffffffff83ab1b19 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 00007f4c3aeb7900 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=00007f4c3b46e618 CR3=000000000feee000 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=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