[ 29.682689] BUG: Bad rss-counter state mm:0000000049d7d686 type:MM_FILEPAGES val:33 [ 29.683453] BUG: Bad rss-counter state mm:0000000049d7d686 type:MM_ANONPAGES val:22 [ 29.847492] ================================================================== [ 29.848129] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.848748] Read of size 8 at addr ffff88800db6bdf0 by task sshd/220 [ 29.849249] [ 29.849398] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.849962] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.854609] Call Trace: [ 29.854826] [ 29.855020] dump_stack_lvl+0x91/0xf0 [ 29.855357] print_report+0xcc/0x620 [ 29.855687] ? __virt_addr_valid+0x102/0x340 [ 29.856058] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.856473] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.856886] kasan_report+0xbe/0xf0 [ 29.857209] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.857621] vma_interval_tree_remove+0xc75/0xec0 [ 29.858020] vma_prepare+0xc54/0x11a0 [ 29.858345] __split_vma+0x5af/0x950 [ 29.862692] ? __pfx___split_vma+0x10/0x10 [ 29.863053] ? find_held_lock+0x2c/0x110 [ 29.863405] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.863786] ? lock_is_held_type+0x9f/0x120 [ 29.864154] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.864560] ? mtree_range_walk+0x632/0x900 [ 29.864933] ? mas_walk+0x5c7/0x7c0 [ 29.865254] do_vmi_munmap+0x1f1/0x2b0 [ 29.865587] mmap_region+0x1f9/0x2660 [ 29.865914] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.866262] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.870774] ? __pfx_lock_acquire+0x10/0x10 [ 29.871142] ? __pfx_mmap_region+0x10/0x10 [ 29.871495] ? security_mmap_addr+0x7d/0xa0 [ 29.871856] ? get_unmapped_area+0x1f5/0x3f0 [ 29.872226] do_mmap+0x854/0xf00 [ 29.872525] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.872863] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.873243] ksys_mmap_pgoff+0x3af/0x500 [ 29.873588] do_syscall_64+0x3f/0x90 [ 29.873914] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.874351] RIP: 0033:0x7f4e8134dd82 [ 29.874707] 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 [ 29.876109] RSP: 002b:00007ffec1e0a278 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.876706] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f4e8134dd82 [ 29.877268] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f4e80787000 [ 29.877829] RBP: 00007f4e80787000 R08: 0000000000000009 R09: 0000000000001000 [ 29.878391] R10: 0000000000000812 R11: 0000000000000206 R12: 00005619fee9cd90 [ 29.879005] R13: 00007ffec1e0a290 R14: 00007ffec1e0a2c0 R15: 00007ffec1e0a620 [ 29.879572] [ 29.879773] [ 29.879920] Allocated by task 213: [ 29.880208] kasan_save_stack+0x22/0x50 [ 29.880549] kasan_set_track+0x25/0x30 [ 29.880881] __kasan_slab_alloc+0x59/0x70 [ 29.881236] kmem_cache_alloc+0x16b/0x370 [ 29.881581] vm_area_dup+0x20/0x160 [ 29.881886] __split_vma+0x170/0x950 [ 29.882197] split_vma+0xc6/0x110 [ 29.886503] mprotect_fixup+0x8d2/0xb30 [ 29.890809] do_mprotect_pkey+0x87e/0xd40 [ 29.891167] __x64_sys_mprotect+0x78/0xc0 [ 29.891521] do_syscall_64+0x3f/0x90 [ 29.891845] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.892279] [ 29.892430] Freed by task 213: [ 29.892701] kasan_save_stack+0x22/0x50 [ 29.893042] kasan_set_track+0x25/0x30 [ 29.893378] kasan_save_free_info+0x2b/0x50 [ 29.893745] __kasan_slab_free+0x10a/0x190 [ 29.894105] kmem_cache_free+0x10d/0x4d0 [ 29.894445] rcu_core+0x8c8/0x2860 [ 29.906680] __do_softirq+0x1b7/0x7d4 [ 29.907053] [ 29.907203] Last potentially related work creation: [ 29.907593] kasan_save_stack+0x22/0x50 [ 29.907935] __kasan_record_aux_stack+0x8e/0xa0 [ 29.908323] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.908757] remove_vma+0x139/0x170 [ 29.909064] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.909441] do_vmi_munmap+0x1f1/0x2b0 [ 29.909769] __vm_munmap+0x138/0x3a0 [ 29.910086] __x64_sys_munmap+0x59/0x80 [ 29.910424] do_syscall_64+0x3f/0x90 [ 29.918686] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.919122] [ 29.919270] The buggy address belongs to the object at ffff88800db6bd98 [ 29.919270] which belongs to the cache vm_area_struct of size 168 [ 29.920218] The buggy address is located 88 bytes inside of [ 29.920218] freed 168-byte region [ffff88800db6bd98, ffff88800db6be40) [ 29.921136] [ 29.921285] The buggy address belongs to the physical page: [ 29.921720] page:0000000054a48b41 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdb6b [ 29.922415] memcg:ffff88800c728901 [ 29.922761] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 29.923222] page_type: 0xffffffff() [ 29.923523] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 29.924117] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c728901 [ 29.924708] page dumped because: kasan: bad access detected [ 29.925144] [ 29.925293] Memory state around the buggy address: [ 29.925677] ffff88800db6bc80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 29.926234] ffff88800db6bd00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 29.934544] >ffff88800db6bd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 29.935111] ^ [ 29.935633] ffff88800db6be00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 29.936200] ffff88800db6be80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.936740] ================================================================== [ 29.937420] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.802652] BUG: Bad rss-counter state mm:000000004504cc4c type:MM_FILEPAGES val:33 [ 34.803661] BUG: Bad rss-counter state mm:000000004504cc4c type:MM_ANONPAGES val:22 [ 35.428790] BUG: Bad rss-counter state mm:00000000598e3103 type:MM_FILEPAGES val:33 [ 35.429473] BUG: Bad rss-counter state mm:00000000598e3103 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:36229' (ECDSA) to the list of known hosts. 2023/06/21 08:09:57 fuzzer started 2023/06/21 08:09:57 dialing manager at localhost:36067 2023/06/21 08:09:57 checking machine... 2023/06/21 08:09:57 checking revisions... [ 36.442632] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:09:57 testing simple program... [ 36.490886] cgroup: Unknown subsys name 'net' [ 36.590946] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:09:57 Registers: info registers vcpu 0 RAX=0000000000000300 RBX=1ffff110028e1f6c RCX=ffffffff8453794f RDX=1ffff11001df46a8 RSI=0000000000000004 RDI=ffff88800efa3540 RBP=ffff88800efa3540 RSP=ffff88801470fb58 R8 =0000000000000001 R9 =ffffed1001df46a8 R10=ffff88800efa3543 R11=00000000000b6a61 R12=ffff88800efa3544 R13=ffff88801470fb80 R14=ffffed1001df46a8 R15=0000000000000003 RIP=ffffffff84537994 RFL=00000006 [-----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 00007f12ef203900 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=0000562edec02fe0 CR3=0000000014570000 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=ffffffffffff00000000000000000000 XMM02=ffffffffffff00000000000000000000 XMM03=00000000000000000000000000777074 XMM04=00007fb369712c71000000725f646975 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 XMM08=000000000000726f7475636578652d7a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=0000000000000001 RCX=0000000000000000 RDX=0000000000000000 RSI=00000000000000fb RDI=0000000000000001 RBP=ffff88801c9076a8 RSP=ffff88801c9075e0 R8 =0000000000000001 R9 =ffffed1003920ec8 R10=ffff88801c907647 R11=0000000000000000 R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=dffffc0000000000 RIP=ffffffff8112993a RFL=00000002 [-------] 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 00007fadd35a8900 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=0000562edebc9218 CR3=000000001975a000 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=25252525252525252525252525252525 XMM01=ff0000000000ffff0000000000ff0000 XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000