syzkaller login: [ 30.781704] BUG: Bad rss-counter state mm:00000000004dd013 type:MM_FILEPAGES val:33 [ 30.782980] BUG: Bad rss-counter state mm:00000000004dd013 type:MM_ANONPAGES val:22 [ 30.821262] ================================================================== [ 30.822252] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.823281] Read of size 8 at addr ffff888016631058 by task sshd/220 [ 30.824071] [ 30.824291] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.825173] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.826153] Call Trace: [ 30.826469] [ 30.826756] dump_stack_lvl+0x91/0xf0 [ 30.827252] print_report+0xcc/0x620 [ 30.827738] ? __virt_addr_valid+0x102/0x340 [ 30.828302] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.828917] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.829547] kasan_report+0xbe/0xf0 [ 30.830032] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.830661] vma_interval_tree_remove+0xc75/0xec0 [ 30.831267] vma_prepare+0xc54/0x11a0 [ 30.831758] __split_vma+0x5af/0x950 [ 30.832248] ? __pfx___split_vma+0x10/0x10 [ 30.832775] ? find_held_lock+0x2c/0x110 [ 30.833299] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.833866] ? lock_is_held_type+0x9f/0x120 [ 30.834403] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.835008] ? mtree_range_walk+0x632/0x900 [ 30.835562] ? mas_walk+0x5c7/0x7c0 [ 30.836065] do_vmi_munmap+0x1f1/0x2b0 [ 30.836558] mmap_region+0x1f9/0x2660 [ 30.837039] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.837548] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.838257] ? __pfx_lock_acquire+0x10/0x10 [ 30.838800] ? __pfx_mmap_region+0x10/0x10 [ 30.839348] ? security_mmap_addr+0x7d/0xa0 [ 30.839891] ? get_unmapped_area+0x1f5/0x3f0 [ 30.840475] do_mmap+0x854/0xf00 [ 30.840919] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.841419] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.841987] ksys_mmap_pgoff+0x3af/0x500 [ 30.842501] do_syscall_64+0x3f/0x90 [ 30.842987] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.843646] RIP: 0033:0x7f7e3dc56d82 [ 30.844117] 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 [ 30.846271] RSP: 002b:00007ffc6e6956a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.847182] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7e3dc56d82 [ 30.848055] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7e3d090000 [ 30.848904] RBP: 00007f7e3d090000 R08: 0000000000000009 R09: 0000000000001000 [ 30.849759] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561e88980f70 [ 30.850610] R13: 00007ffc6e6956c0 R14: 00007ffc6e6956f0 R15: 00007ffc6e695a50 [ 30.851464] [ 30.851763] [ 30.851986] Allocated by task 213: [ 30.852420] kasan_save_stack+0x22/0x50 [ 30.852926] kasan_set_track+0x25/0x30 [ 30.853422] __kasan_slab_alloc+0x59/0x70 [ 30.853952] kmem_cache_alloc+0x16b/0x370 [ 30.854470] vm_area_dup+0x20/0x160 [ 30.854926] __split_vma+0x170/0x950 [ 30.855395] split_vma+0xc6/0x110 [ 30.855833] mprotect_fixup+0x8d2/0xb30 [ 30.856356] do_mprotect_pkey+0x87e/0xd40 [ 30.856883] __x64_sys_mprotect+0x78/0xc0 [ 30.857406] do_syscall_64+0x3f/0x90 [ 30.857884] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.858544] [ 30.858766] Freed by task 213: [ 30.859164] kasan_save_stack+0x22/0x50 [ 30.859672] kasan_set_track+0x25/0x30 [ 30.860181] kasan_save_free_info+0x2b/0x50 [ 30.860715] __kasan_slab_free+0x10a/0x190 [ 30.861246] kmem_cache_free+0x10d/0x4d0 [ 30.861760] rcu_core+0x8c8/0x2860 [ 30.862206] __do_softirq+0x1b7/0x7d4 [ 30.862698] [ 30.862915] Last potentially related work creation: [ 30.863506] kasan_save_stack+0x22/0x50 [ 30.864071] __kasan_record_aux_stack+0x8e/0xa0 [ 30.864652] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.865297] remove_vma+0x139/0x170 [ 30.865752] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.866310] do_vmi_munmap+0x1f1/0x2b0 [ 30.866801] __vm_munmap+0x138/0x3a0 [ 30.867271] __x64_sys_munmap+0x59/0x80 [ 30.867779] do_syscall_64+0x3f/0x90 [ 30.868273] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.868925] [ 30.869143] The buggy address belongs to the object at ffff888016631000 [ 30.869143] which belongs to the cache vm_area_struct of size 168 [ 30.870609] The buggy address is located 88 bytes inside of [ 30.870609] freed 168-byte region [ffff888016631000, ffff8880166310a8) [ 30.872016] [ 30.872239] The buggy address belongs to the physical page: [ 30.872898] page:000000001621c7b1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16631 [ 30.874002] memcg:ffff88800f13ca01 [ 30.874466] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.875117] page_type: 0xffffffff() [ 30.875583] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.876536] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f13ca01 [ 30.877444] page dumped because: kasan: bad access detected [ 30.878102] [ 30.878320] Memory state around the buggy address: [ 30.878899] ffff888016630f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.879754] ffff888016630f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.880628] >ffff888016631000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.881478] ^ [ 30.882208] ffff888016631080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.883066] ffff888016631100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.883916] ================================================================== [ 30.884990] Disabling lock debugging due to kernel taint [ 33.449429] BUG: Bad rss-counter state mm:00000000fc382e0a type:MM_FILEPAGES val:33 [ 33.450748] BUG: Bad rss-counter state mm:00000000fc382e0a type:MM_ANONPAGES val:22 [ 33.918406] BUG: Bad rss-counter state mm:00000000997977b6 type:MM_FILEPAGES val:33 [ 33.919458] BUG: Bad rss-counter state mm:00000000997977b6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:44413' (ECDSA) to the list of known hosts. 2023/06/20 11:31:35 fuzzer started 2023/06/20 11:31:35 dialing manager at localhost:36067 2023/06/20 11:31:35 checking machine... 2023/06/20 11:31:35 checking revisions... [ 34.687693] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:31:35 testing simple program... [ 34.749260] cgroup: Unknown subsys name 'net' [ 34.796510] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:31:34 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff8608a556 RDX=0000000000000008 RSI=ffff888016e575c0 RDI=ffff888016e57528 RBP=ffff888016e57580 RSP=ffff888016e57448 R8 =0000000000000001 R9 =ffff888016e57568 R10=0000000000038001 R11=0000000000003c0d R12=ffff888016e57588 R13=ffff888016e57570 R14=ffff888016e575c0 R15=ffff888016e57528 RIP=ffffffff81130400 RFL=00000287 [--S--PC] 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 00007ff011f27700 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=00007ffcc1ff4888 CR3=0000000016794000 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=2034333a31333a3131203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034333a31333a3131203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=1ffff1100d9e134e RSI=ffff888008e07db0 RDI=ffff88806cf09ac0 RBP=ffff88806cf09b08 RSP=ffff88806cf09a50 R8 =0000000000000001 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=00000000000b5305 R12=ffff88806cf09b38 R13=ffff88806cf09ab8 R14=ffff888008e07db0 R15=ffff88806cf09a70 RIP=ffffffff81130933 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=00007f289b455430 CR3=0000000008c72000 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=72a7e0880ccb3cb63b4ee02379964e2f XMM02=000000000011b528eff9b2d0a8fce9cb XMM03=000000000011b5f82c67c8bc2e329bc3 XMM04=612847eeb350098700000000000ae988 XMM05=19e9129bd510f2350000000000132040 XMM06=bd7d44c753ab58570000000000130ea8 XMM07=e042d86d42eb936e00000000001224e8 XMM08=f7c934820ee1f40f000000000011b5f8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000