syzkaller login: [ 38.722293] BUG: Bad rss-counter state mm:0000000009f7f9d1 type:MM_FILEPAGES val:33 [ 38.723209] BUG: Bad rss-counter state mm:0000000009f7f9d1 type:MM_ANONPAGES val:22 [ 38.829444] ================================================================== [ 38.830780] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.832354] Read of size 8 at addr ffff8880164fc4e0 by task sshd/227 [ 38.832908] [ 38.833053] CPU: 1 PID: 227 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.833640] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.834336] Call Trace: [ 38.834557] [ 38.834753] dump_stack_lvl+0x91/0xf0 [ 38.835084] print_report+0xcc/0x620 [ 38.835403] ? __virt_addr_valid+0x102/0x340 [ 38.835767] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.836186] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.836598] kasan_report+0xbe/0xf0 [ 38.836908] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.837317] vma_interval_tree_remove+0xc75/0xec0 [ 38.837718] vma_prepare+0xc54/0x11a0 [ 38.838031] __split_vma+0x5af/0x950 [ 38.838339] ? __pfx___split_vma+0x10/0x10 [ 38.838695] ? find_held_lock+0x2c/0x110 [ 38.839040] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.839409] ? lock_is_held_type+0x9f/0x120 [ 38.839780] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.840204] ? mtree_range_walk+0x632/0x900 [ 38.840575] ? mas_walk+0x5c7/0x7c0 [ 38.840881] do_vmi_munmap+0x1f1/0x2b0 [ 38.841199] mmap_region+0x1f9/0x2660 [ 38.841515] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.841853] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.842320] ? __pfx_lock_acquire+0x10/0x10 [ 38.842671] ? __pfx_mmap_region+0x10/0x10 [ 38.843018] ? security_mmap_addr+0x7d/0xa0 [ 38.843369] ? get_unmapped_area+0x1f5/0x3f0 [ 38.843736] do_mmap+0x854/0xf00 [ 38.844021] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.844353] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.844729] ksys_mmap_pgoff+0x3af/0x500 [ 38.845065] do_syscall_64+0x3f/0x90 [ 38.845379] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.845807] RIP: 0033:0x7fe60a2a5d82 [ 38.846108] 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 [ 38.847519] RSP: 002b:00007ffcc2bdff48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.848136] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe60a2a5d82 [ 38.848709] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe6096df000 [ 38.849265] RBP: 00007fe6096df000 R08: 0000000000000009 R09: 0000000000001000 [ 38.849823] R10: 0000000000000812 R11: 0000000000000206 R12: 00005652f854bec0 [ 38.850394] R13: 00007ffcc2bdff60 R14: 00007ffcc2bdff90 R15: 00007ffcc2be02f0 [ 38.850959] [ 38.851152] [ 38.851288] Allocated by task 220: [ 38.851576] kasan_save_stack+0x22/0x50 [ 38.851904] kasan_set_track+0x25/0x30 [ 38.852239] __kasan_slab_alloc+0x59/0x70 [ 38.852576] kmem_cache_alloc+0x16b/0x370 [ 38.852909] vm_area_dup+0x20/0x160 [ 38.853203] __split_vma+0x170/0x950 [ 38.853504] split_vma+0xc6/0x110 [ 38.853790] mprotect_fixup+0x8d2/0xb30 [ 38.854115] do_mprotect_pkey+0x87e/0xd40 [ 38.854456] __x64_sys_mprotect+0x78/0xc0 [ 38.854796] do_syscall_64+0x3f/0x90 [ 38.855104] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.855530] [ 38.855672] Freed by task 220: [ 38.855928] kasan_save_stack+0x22/0x50 [ 38.856266] kasan_set_track+0x25/0x30 [ 38.856592] kasan_save_free_info+0x2b/0x50 [ 38.856941] __kasan_slab_free+0x10a/0x190 [ 38.857288] kmem_cache_free+0x10d/0x4d0 [ 38.857626] rcu_core+0x8c8/0x2860 [ 38.857918] __do_softirq+0x1b7/0x7d4 [ 38.858236] [ 38.858376] Last potentially related work creation: [ 38.858772] kasan_save_stack+0x22/0x50 [ 38.859104] __kasan_record_aux_stack+0x8e/0xa0 [ 38.859482] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.859908] remove_vma+0x139/0x170 [ 38.860210] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.860584] do_vmi_munmap+0x1f1/0x2b0 [ 38.860897] __vm_munmap+0x138/0x3a0 [ 38.861206] __x64_sys_munmap+0x59/0x80 [ 38.861530] do_syscall_64+0x3f/0x90 [ 38.861842] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.862262] [ 38.862400] The buggy address belongs to the object at ffff8880164fc488 [ 38.862400] which belongs to the cache vm_area_struct of size 168 [ 38.863375] The buggy address is located 88 bytes inside of [ 38.863375] freed 168-byte region [ffff8880164fc488, ffff8880164fc530) [ 38.864313] [ 38.864456] The buggy address belongs to the physical page: [ 38.864905] page:000000003152b071 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x164fc [ 38.865636] memcg:ffff8880164fa101 [ 38.865921] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.866350] page_type: 0xffffffff() [ 38.866652] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 38.867251] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880164fa101 [ 38.867859] page dumped because: kasan: bad access detected [ 38.868318] [ 38.868460] Memory state around the buggy address: [ 38.868846] ffff8880164fc380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.869415] ffff8880164fc400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 38.869980] >ffff8880164fc480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.870550] ^ [ 38.871051] ffff8880164fc500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb [ 38.871618] ffff8880164fc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.872183] ================================================================== [ 38.872780] Disabling lock debugging due to kernel taint [ 40.926743] BUG: Bad rss-counter state mm:00000000c6882287 type:MM_FILEPAGES val:33 [ 40.928353] BUG: Bad rss-counter state mm:00000000c6882287 type:MM_ANONPAGES val:22 [ 41.327153] BUG: Bad rss-counter state mm:0000000000c66f1c type:MM_FILEPAGES val:33 [ 41.328235] BUG: Bad rss-counter state mm:0000000000c66f1c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:50163' (ECDSA) to the list of known hosts. 2023/06/21 05:32:11 fuzzer started 2023/06/21 05:32:11 dialing manager at localhost:36067 2023/06/21 05:32:11 checking machine... 2023/06/21 05:32:11 checking revisions... [ 42.132530] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:32:12 testing simple program... [ 42.196371] cgroup: Unknown subsys name 'net' [ 42.258051] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:32:11 Registers: info registers vcpu 0 RAX=1ffff110018a5a85 RBX=ffff88800c52d3f8 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800c52d428 RBP=ffff8880190aba70 RSP=ffff88806ce09dd8 R8 =0000000000000001 R9 =ffffed100d9c13af R10=0000000000000003 R11=00000000000b6a61 R12=dffffc0000000000 R13=ffff8880190ab8f8 R14=ffffffff813782f8 R15=ffff888019a58880 RIP=ffffffff818464ec RFL=00000046 [---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 00007fae32ed2900 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=00007fae33487650 CR3=000000000dc22000 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=00000000000000000000000000000000 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffed1002b3fe52 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff88800fe73680 RSI=ffffffff814c8575 RDI=ffffffff8560b640 RBP=1ffff11002b3fe52 RSP=ffff8880159ff280 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=ffffffff8560b640 R13=ffffffff814c8575 R14=ffffffff85652d08 R15=0000000000000000 RIP=ffffffff812d86b0 RFL=00000282 [--S----] 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=00007f6669f55000 CR3=00000000094e2000 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=756e696c2d34365f3638782f62696c2f XMM01=7470797263356b62696c2f756e672d78 XMM02=00332e6f732e6f7470797263356b6269 XMM03=6c2f756e672d78756e696c2d34365f36 XMM04=00000000000000000000000000000000 XMM05=00007f666a452f6000007f666a235f30 XMM06=00007f666a235a2000007f666a235510 XMM07=00007f666a23500000007f666a453a20 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000