syzkaller login: [ 38.769298] BUG: Bad rss-counter state mm:000000003dbe98c2 type:MM_FILEPAGES val:33 [ 38.770705] BUG: Bad rss-counter state mm:000000003dbe98c2 type:MM_ANONPAGES val:22 [ 38.923854] ================================================================== [ 38.924771] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.925720] Read of size 8 at addr ffff888017929058 by task sshd/226 [ 38.926495] [ 38.926711] CPU: 0 PID: 226 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.927695] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.928674] Call Trace: [ 38.928990] [ 38.929278] dump_stack_lvl+0x91/0xf0 [ 38.929772] print_report+0xcc/0x620 [ 38.930257] ? __virt_addr_valid+0x102/0x340 [ 38.930806] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.931426] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.932069] kasan_report+0xbe/0xf0 [ 38.932543] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.933164] vma_interval_tree_remove+0xc75/0xec0 [ 38.933767] vma_prepare+0xc54/0x11a0 [ 38.934245] __split_vma+0x5af/0x950 [ 38.934716] ? __pfx___split_vma+0x10/0x10 [ 38.935245] ? find_held_lock+0x2c/0x110 [ 38.935770] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.936341] ? lock_is_held_type+0x9f/0x120 [ 38.936882] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.937490] ? mtree_range_walk+0x632/0x900 [ 38.938038] ? mas_walk+0x5c7/0x7c0 [ 38.938519] do_vmi_munmap+0x1f1/0x2b0 [ 38.939012] mmap_region+0x1f9/0x2660 [ 38.939493] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.940012] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.940734] ? __pfx_lock_acquire+0x10/0x10 [ 38.941268] ? __pfx_mmap_region+0x10/0x10 [ 38.941793] ? security_mmap_addr+0x7d/0xa0 [ 38.942329] ? get_unmapped_area+0x1f5/0x3f0 [ 38.942880] do_mmap+0x854/0xf00 [ 38.943322] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.943811] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.944408] ksys_mmap_pgoff+0x3af/0x500 [ 38.944910] do_syscall_64+0x3f/0x90 [ 38.945390] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.946035] RIP: 0033:0x7fc55284bd82 [ 38.946493] 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 [ 38.948633] RSP: 002b:00007ffd0eec76e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.949551] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc55284bd82 [ 38.950395] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc551c85000 [ 38.951241] RBP: 00007fc551c85000 R08: 0000000000000009 R09: 0000000000001000 [ 38.952403] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e7e3eb5b20 [ 38.953439] R13: 00007ffd0eec7700 R14: 00007ffd0eec7730 R15: 00007ffd0eec7a90 [ 38.954457] [ 38.954808] [ 38.955066] Allocated by task 219: [ 38.955585] kasan_save_stack+0x22/0x50 [ 38.956203] kasan_set_track+0x25/0x30 [ 38.956793] __kasan_slab_alloc+0x59/0x70 [ 38.957424] kmem_cache_alloc+0x16b/0x370 [ 38.958038] vm_area_dup+0x20/0x160 [ 38.958579] __split_vma+0x170/0x950 [ 38.959138] split_vma+0xc6/0x110 [ 38.959665] mprotect_fixup+0x8d2/0xb30 [ 38.960270] do_mprotect_pkey+0x87e/0xd40 [ 38.960883] __x64_sys_mprotect+0x78/0xc0 [ 38.961505] do_syscall_64+0x3f/0x90 [ 38.962076] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.962869] [ 38.963130] Freed by task 219: [ 38.963612] kasan_save_stack+0x22/0x50 [ 38.964262] kasan_set_track+0x25/0x30 [ 38.964869] kasan_save_free_info+0x2b/0x50 [ 38.965396] __kasan_slab_free+0x10a/0x190 [ 38.965926] kmem_cache_free+0x10d/0x4d0 [ 38.966430] rcu_core+0x8c8/0x2860 [ 38.966874] __do_softirq+0x1b7/0x7d4 [ 38.967353] [ 38.967568] Last potentially related work creation: [ 38.968167] kasan_save_stack+0x22/0x50 [ 38.968673] __kasan_record_aux_stack+0x8e/0xa0 [ 38.969243] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.969886] remove_vma+0x139/0x170 [ 38.970335] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.970889] do_vmi_munmap+0x1f1/0x2b0 [ 38.971374] __vm_munmap+0x138/0x3a0 [ 38.971845] __x64_sys_munmap+0x59/0x80 [ 38.972338] do_syscall_64+0x3f/0x90 [ 38.972813] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.973458] [ 38.973678] The buggy address belongs to the object at ffff888017929000 [ 38.973678] which belongs to the cache vm_area_struct of size 168 [ 38.975131] The buggy address is located 88 bytes inside of [ 38.975131] freed 168-byte region [ffff888017929000, ffff8880179290a8) [ 38.976544] [ 38.976763] The buggy address belongs to the physical page: [ 38.977419] page:00000000d5cee7ab refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17929 [ 38.978500] memcg:ffff88801005eb01 [ 38.978927] flags: 0x100000000000200(slab|node=0|zone=1) [ 38.979566] page_type: 0xffffffff() [ 38.980020] raw: 0100000000000200 ffff8880087a0c80 ffffea0000388b00 dead000000000008 [ 38.980935] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801005eb01 [ 38.981833] page dumped because: kasan: bad access detected [ 38.982486] [ 38.982700] Memory state around the buggy address: [ 38.983279] ffff888017928f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.984140] ffff888017928f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 38.984998] >ffff888017929000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.985847] ^ [ 38.986570] ffff888017929080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 38.987424] ffff888017929100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.988288] ================================================================== [ 38.989262] Disabling lock debugging due to kernel taint [ 41.684228] BUG: Bad rss-counter state mm:000000003bf414b4 type:MM_FILEPAGES val:33 [ 41.685442] BUG: Bad rss-counter state mm:000000003bf414b4 type:MM_ANONPAGES val:22 [ 42.176123] BUG: Bad rss-counter state mm:0000000015644e29 type:MM_FILEPAGES val:33 [ 42.177124] BUG: Bad rss-counter state mm:0000000015644e29 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:42220' (ECDSA) to the list of known hosts. 2023/06/21 03:00:51 fuzzer started 2023/06/21 03:00:51 dialing manager at localhost:36067 2023/06/21 03:00:51 checking machine... 2023/06/21 03:00:51 checking revisions... [ 42.923658] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:00:51 testing simple program... [ 42.973522] cgroup: Unknown subsys name 'net' [ 43.029671] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:00:51 Registers: info registers vcpu 0 RAX=00005623fcf96490 RBX=00000000649267e3 RCX=0000000000000001 RDX=00005623fcf96490 RSI=00005623fcf96498 RDI=0000000000000000 RBP=00007f876240065c RSP=00007f87624005f0 R8 =00007f87624006a0 R9 =0000000000000001 R10=0000000000000001 R11=00007f87624008b0 R12=00007f8762954430 R13=0000000000001fa0 R14=0000000000000000 R15=0000000000000000 RIP=00007f8762852126 RFL=00000246 [---Z-P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f8762404700 00000000 00000000 GS =0000 0000000000000000 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=00007fe8d449ea20 CR3=000000000efec000 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=0000000000030e6800000000649267e3 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3633325b646873732031353a3030 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363939 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000255 RCX=0000000000000000 RDX=ffff88800c5a8000 RSI=0000000000000000 RDI=0000000000000000 RBP=ffff88800f63ff58 RSP=ffff88800f63fed8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6d53 R12=0000000000000006 R13=00007fee21be500c R14=0000000000000200 R15=ffff88800845dc80 RIP=ffffffff8113b970 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 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=00007fee21be500c CR3=000000001d0c6000 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=2e6f732e6d617062696c2f756e672d78 XMM02=00302e6f732e6d617062696c2f756e67 XMM03=2d78756e696c2d34365f3638782f6269 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000