[ 24.140248] BUG: Bad rss-counter state mm:0000000080340881 type:MM_FILEPAGES val:33 [ 24.140960] BUG: Bad rss-counter state mm:0000000080340881 type:MM_ANONPAGES val:22 [ 24.247080] ================================================================== [ 24.248249] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.249451] Read of size 8 at addr ffff88800ee49228 by task sshd/220 [ 24.250564] [ 24.250870] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.251993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.253361] Call Trace: [ 24.253760] [ 24.253907] dump_stack_lvl+0x91/0xf0 [ 24.254161] print_report+0xcc/0x620 [ 24.254412] ? __virt_addr_valid+0x102/0x340 [ 24.254705] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.255022] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.255337] kasan_report+0xbe/0xf0 [ 24.255582] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.255898] vma_interval_tree_remove+0xc75/0xec0 [ 24.256208] vma_prepare+0xc54/0x11a0 [ 24.256460] __split_vma+0x5af/0x950 [ 24.256703] ? __pfx___split_vma+0x10/0x10 [ 24.256974] ? find_held_lock+0x2c/0x110 [ 24.257245] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.257535] ? lock_is_held_type+0x9f/0x120 [ 24.257812] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.258122] ? mtree_range_walk+0x632/0x900 [ 24.258408] ? mas_walk+0x5c7/0x7c0 [ 24.258658] do_vmi_munmap+0x1f1/0x2b0 [ 24.258913] mmap_region+0x1f9/0x2660 [ 24.259162] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.259428] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.259794] ? __pfx_lock_acquire+0x10/0x10 [ 24.260067] ? __pfx_mmap_region+0x10/0x10 [ 24.260340] ? security_mmap_addr+0x7d/0xa0 [ 24.260614] ? get_unmapped_area+0x1f5/0x3f0 [ 24.260895] do_mmap+0x854/0xf00 [ 24.261120] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.261376] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.261665] ksys_mmap_pgoff+0x3af/0x500 [ 24.261926] do_syscall_64+0x3f/0x90 [ 24.262173] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.262509] RIP: 0033:0x7f02ce00bd82 [ 24.262757] 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 [ 24.263835] RSP: 002b:00007ffe742acbc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.264295] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f02ce00bd82 [ 24.264722] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f02cd445000 [ 24.265149] RBP: 00007f02cd445000 R08: 0000000000000009 R09: 0000000000001000 [ 24.265582] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564cd91a6ec0 [ 24.266010] R13: 00007ffe742acbe0 R14: 00007ffe742acc10 R15: 00007ffe742acf70 [ 24.266443] [ 24.266600] [ 24.266711] Allocated by task 210: [ 24.266929] kasan_save_stack+0x22/0x50 [ 24.267189] kasan_set_track+0x25/0x30 [ 24.267442] __kasan_slab_alloc+0x59/0x70 [ 24.267709] kmem_cache_alloc+0x16b/0x370 [ 24.267977] vm_area_dup+0x20/0x160 [ 24.268211] __split_vma+0x170/0x950 [ 24.268451] split_vma+0xc6/0x110 [ 24.268677] mprotect_fixup+0x8d2/0xb30 [ 24.268958] do_mprotect_pkey+0x87e/0xd40 [ 24.269266] __x64_sys_mprotect+0x78/0xc0 [ 24.269563] do_syscall_64+0x3f/0x90 [ 24.269844] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.270211] [ 24.270342] Freed by task 203: [ 24.270595] kasan_save_stack+0x22/0x50 [ 24.270893] kasan_set_track+0x25/0x30 [ 24.271185] kasan_save_free_info+0x2b/0x50 [ 24.271507] __kasan_slab_free+0x10a/0x190 [ 24.271821] kmem_cache_free+0x10d/0x4d0 [ 24.272117] rcu_core+0x8c8/0x2860 [ 24.272383] __do_softirq+0x1b7/0x7d4 [ 24.272635] [ 24.272751] Last potentially related work creation: [ 24.273060] kasan_save_stack+0x22/0x50 [ 24.273323] __kasan_record_aux_stack+0x8e/0xa0 [ 24.273628] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.273971] remove_vma+0x139/0x170 [ 24.274212] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.274520] do_vmi_munmap+0x1f1/0x2b0 [ 24.274791] __vm_munmap+0x138/0x3a0 [ 24.275032] __x64_sys_munmap+0x59/0x80 [ 24.275286] do_syscall_64+0x3f/0x90 [ 24.275527] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.275852] [ 24.275965] The buggy address belongs to the object at ffff88800ee491d0 [ 24.275965] which belongs to the cache vm_area_struct of size 168 [ 24.276714] The buggy address is located 88 bytes inside of [ 24.276714] freed 168-byte region [ffff88800ee491d0, ffff88800ee49278) [ 24.277501] [ 24.277627] The buggy address belongs to the physical page: [ 24.277967] page:00000000070bd598 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xee49 [ 24.278528] memcg:ffff88800ec4cb01 [ 24.278762] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.279125] page_type: 0xffffffff() [ 24.279361] raw: 0100000000000200 ffff88800879fc80 ffffea0000327640 dead000000000003 [ 24.279835] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec4cb01 [ 24.280301] page dumped because: kasan: bad access detected [ 24.280641] [ 24.280754] Memory state around the buggy address: [ 24.281055] ffff88800ee49100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.281492] ffff88800ee49180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 24.281933] >ffff88800ee49200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 24.282370] ^ [ 24.282671] ffff88800ee49280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 24.283109] ffff88800ee49300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 24.283545] ================================================================== [ 24.284116] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.486447] BUG: Bad rss-counter state mm:000000003f6790dc type:MM_FILEPAGES val:33 [ 26.487621] BUG: Bad rss-counter state mm:000000003f6790dc type:MM_ANONPAGES val:22 [ 27.058225] BUG: Bad rss-counter state mm:00000000ebb159b3 type:MM_FILEPAGES val:33 [ 27.059421] BUG: Bad rss-counter state mm:00000000ebb159b3 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:9929' (ECDSA) to the list of known hosts. 2023/06/19 21:52:06 fuzzer started 2023/06/19 21:52:07 dialing manager at localhost:44161 2023/06/19 21:52:07 checking machine... 2023/06/19 21:52:07 checking revisions... [ 27.758045] kmemleak: Automatic memory scanning thread ended 2023/06/19 21:52:07 testing simple program... [ 27.806012] cgroup: Unknown subsys name 'net' [ 27.843832] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:52:06 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 0000000000000000 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=00007ffed02d0cc8 CR3=00000000099ee000 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=2036303a32353a3132203931206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036303a32353a3132203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffed100d9e1387 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000018 RSI=ffffffff813cb351 RDI=ffffffff8562bbc8 RBP=1ffff1100d9e1387 RSP=ffff88806cf09c28 R8 =ffffffff85497f20 R9 =ffffffffffffffff R10=ffffffffffffffff R11=000000128922f640 R12=ffffffff8562bbc8 R13=ffffffff813cb351 R14=ffffffff85497f20 R15=0000000000000000 RIP=ffffffff812d8652 RFL=00000086 [--S--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 00007fb76ef37900 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=00007fb76f4ec650 CR3=000000000fcf8000 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=2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c XMM01=00ff00000000000000000000000000ff XMM02=00ff00000000000000000000000000ff XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=6500273d2720676e6974636570786500 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000