[ 25.671978] BUG: Bad rss-counter state mm:000000008a376153 type:MM_FILEPAGES val:33 [ 25.672554] BUG: Bad rss-counter state mm:000000008a376153 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 25.850857] ================================================================== [ 25.850870] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 25.850907] Read of size 8 at addr ffff88801a31b798 by task sshd/221 [ 25.850925] [ 25.850929] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 25.850952] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.850964] Call Trace: [ 25.850970] [ 25.850977] dump_stack_lvl+0x91/0xf0 [ 25.851011] print_report+0xcc/0x620 [ 25.851046] ? __virt_addr_valid+0x102/0x340 [ 25.851072] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.851099] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.851126] kasan_report+0xbe/0xf0 [ 25.851161] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.851192] vma_interval_tree_remove+0xc75/0xec0 [ 25.851222] vma_prepare+0xc54/0x11a0 [ 25.851252] __split_vma+0x5af/0x950 [ 25.851279] ? __pfx___split_vma+0x10/0x10 [ 25.851307] ? find_held_lock+0x2c/0x110 [ 25.851343] do_vmi_align_munmap+0x2ba/0x11f0 [ 25.851372] ? lock_is_held_type+0x9f/0x120 [ 25.851400] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 25.851427] ? mtree_range_walk+0x632/0x900 [ 25.851465] ? mas_walk+0x5c7/0x7c0 [ 25.851500] do_vmi_munmap+0x1f1/0x2b0 [ 25.851528] mmap_region+0x1f9/0x2660 [ 25.851555] ? vm_mmap_pgoff+0x15c/0x3a0 [ 25.851584] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 25.851611] ? __pfx_lock_acquire+0x10/0x10 [ 25.851636] ? __pfx_mmap_region+0x10/0x10 [ 25.851665] ? security_mmap_addr+0x7d/0xa0 [ 25.851688] ? get_unmapped_area+0x1f5/0x3f0 [ 25.851713] do_mmap+0x854/0xf00 [ 25.851742] vm_mmap_pgoff+0x1a6/0x3a0 [ 25.851772] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 25.851806] ksys_mmap_pgoff+0x3af/0x500 [ 25.851832] do_syscall_64+0x3f/0x90 [ 25.851862] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.851898] RIP: 0033:0x7f8750b37d82 [ 25.851914] 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 [ 25.851935] RSP: 002b:00007ffd28bf0a68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 25.851956] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8750b37d82 [ 25.851971] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f874ff71000 [ 25.851985] RBP: 00007f874ff71000 R08: 0000000000000009 R09: 0000000000001000 [ 25.851999] R10: 0000000000000812 R11: 0000000000000206 R12: 00005597d13bfec0 [ 25.852014] R13: 00007ffd28bf0a80 R14: 00007ffd28bf0ab0 R15: 00007ffd28bf0e10 [ 25.852038] [ 25.852044] [ 25.852048] Allocated by task 207: [ 25.852058] kasan_save_stack+0x22/0x50 [ 25.852089] kasan_set_track+0x25/0x30 [ 25.852130] __kasan_slab_alloc+0x59/0x70 [ 25.852162] kmem_cache_alloc+0x16b/0x370 [ 25.852188] vm_area_dup+0x20/0x160 [ 25.852208] __split_vma+0x170/0x950 [ 25.852230] split_vma+0xc6/0x110 [ 25.852252] mprotect_fixup+0x8d2/0xb30 [ 25.852281] do_mprotect_pkey+0x87e/0xd40 [ 25.852310] __x64_sys_mprotect+0x78/0xc0 [ 25.852340] do_syscall_64+0x3f/0x90 [ 25.852367] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.852399] [ 25.852402] Freed by task 19: [ 25.852410] kasan_save_stack+0x22/0x50 [ 25.852440] kasan_set_track+0x25/0x30 [ 25.852469] kasan_save_free_info+0x2b/0x50 [ 25.852493] __kasan_slab_free+0x10a/0x190 [ 25.852525] kmem_cache_free+0x10d/0x4d0 [ 25.852551] rcu_core+0x8c8/0x2860 [ 25.852571] __do_softirq+0x1b7/0x7d4 [ 25.852594] [ 25.852597] Last potentially related work creation: [ 25.852602] kasan_save_stack+0x22/0x50 [ 25.852631] __kasan_record_aux_stack+0x8e/0xa0 [ 25.852654] __call_rcu_common.constprop.0+0x6a/0xb90 [ 25.852688] remove_vma+0x139/0x170 [ 25.852706] do_vmi_align_munmap+0xd4a/0x11f0 [ 25.852730] do_vmi_munmap+0x1f1/0x2b0 [ 25.852754] __vm_munmap+0x138/0x3a0 [ 25.852777] __x64_sys_munmap+0x59/0x80 [ 25.852802] do_syscall_64+0x3f/0x90 [ 25.852829] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.852862] [ 25.852864] The buggy address belongs to the object at ffff88801a31b740 [ 25.852864] which belongs to the cache vm_area_struct of size 168 [ 25.852881] The buggy address is located 88 bytes inside of [ 25.852881] freed 168-byte region [ffff88801a31b740, ffff88801a31b7e8) [ 25.852902] [ 25.852905] The buggy address belongs to the physical page: [ 25.852912] page:00000000374cd892 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a31b [ 25.852934] memcg:ffff88801a2cd101 [ 25.852941] flags: 0x100000000000200(slab|node=0|zone=1) [ 25.852958] page_type: 0xffffffff() [ 25.852976] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 25.852996] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a2cd101 [ 25.853007] page dumped because: kasan: bad access detected [ 25.853015] [ 25.853017] Memory state around the buggy address: [ 25.853026] ffff88801a31b680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 25.853040] ffff88801a31b700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 25.853054] >ffff88801a31b780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 25.853065] ^ [ 25.853074] ffff88801a31b800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 25.853088] ffff88801a31b880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 25.853099] ================================================================== [ 25.853137] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.908175] BUG: Bad rss-counter state mm:00000000e6179595 type:MM_FILEPAGES val:33 [ 27.909164] BUG: Bad rss-counter state mm:00000000e6179595 type:MM_ANONPAGES val:22 [ 28.295326] BUG: Bad rss-counter state mm:00000000a44a2fd6 type:MM_FILEPAGES val:33 [ 28.296335] BUG: Bad rss-counter state mm:00000000a44a2fd6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51428' (ECDSA) to the list of known hosts. [ 28.420687] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 28.422346] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 28.423431] CPU: 1 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 28.424851] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.426015] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 28.426712] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 28.429003] RSP: 0018:ffff88800fd7f8a8 EFLAGS: 00010212 [ 28.429689] RAX: ffff8880199da388 RBX: ffff888017704ec0 RCX: 1ffff11002ee09d8 [ 28.430628] RDX: 0000000000000001 RSI: ffff8880199da388 RDI: ffff888017704ec0 [ 28.431565] RBP: ffff88801a31b780 R08: 0000000000000008 R09: 0000000000000000 [ 28.432490] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000000 [ 28.433408] R13: dffffc0000000000 R14: ffff88800fd7f988 R15: ffffffff816e61c0 [ 28.434310] FS: 00007f227f103900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 28.435321] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.436065] CR2: 00007f227f0d6000 CR3: 000000001a098000 CR4: 0000000000350ee0 [ 28.436991] Call Trace: [ 28.437336] [ 28.437640] ? die_addr+0x3c/0xa0 [ 28.438110] ? exc_general_protection+0x125/0x220 [ 28.438766] ? asm_exc_general_protection+0x26/0x30 [ 28.439436] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 28.440231] ? __rb_insert_augmented+0x78/0x8b0 [ 28.440853] ? vma_interval_tree_insert+0x23a/0x400 [ 28.441530] vma_prepare+0xa1a/0x11a0 [ 28.442055] __split_vma+0x5af/0x950 [ 28.442561] ? __pfx___split_vma+0x10/0x10 [ 28.443122] ? lock_acquire+0x434/0x4c0 [ 28.443655] do_vmi_align_munmap+0x361/0x11f0 [ 28.444267] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.444920] ? mtree_range_walk+0x632/0x900 [ 28.445503] ? mas_walk+0x5c7/0x7c0 [ 28.446035] do_vmi_munmap+0x1f1/0x2b0 [ 28.446568] mmap_region+0x1f9/0x2660 [ 28.447086] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.447846] ? __pfx_lock_acquire+0x10/0x10 [ 28.448490] ? __pfx_mmap_region+0x10/0x10 [ 28.449077] ? security_mmap_addr+0x7d/0xa0 [ 28.449666] ? get_unmapped_area+0x1f5/0x3f0 [ 28.450275] do_mmap+0x854/0xf00 [ 28.450759] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.451305] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.451922] ksys_mmap_pgoff+0x3af/0x500 [ 28.452485] do_syscall_64+0x3f/0x90 [ 28.453014] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.453724] RIP: 0033:0x7f227fc95d82 [ 28.454229] 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 [ 28.456581] RSP: 002b:00007ffef6022cb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.457586] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f227fc95d82 [ 28.458528] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f227f0cf000 [ 28.459461] RBP: 00007f227f0cf000 R08: 0000000000000009 R09: 0000000000001000 [ 28.460411] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564cf1c42f60 [ 28.461346] R13: 00007ffef6022cd0 R14: 00007ffef6022d00 R15: 00007ffef6023060 [ 28.462299] [ 28.462620] Modules linked in: [ 28.463119] ---[ end trace 0000000000000000 ]--- [ 28.463758] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 28.464626] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 28.467377] RSP: 0018:ffff88800fd7f8a8 EFLAGS: 00010212 [ 28.468211] RAX: ffff8880199da388 RBX: ffff888017704ec0 RCX: 1ffff11002ee09d8 [ 28.469325] RDX: 0000000000000001 RSI: ffff8880199da388 RDI: ffff888017704ec0 [ 28.470300] RBP: ffff88801a31b780 R08: 0000000000000008 R09: 0000000000000000 [ 28.471199] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000000 [ 28.472118] R13: dffffc0000000000 R14: ffff88800fd7f988 R15: ffffffff816e61c0 [ 28.473050] FS: 00007f227f103900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 [ 28.474078] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.474842] CR2: 00007f227f0d6000 CR3: 000000001a098000 CR4: 0000000000350ee0 VM DIAGNOSIS: 12:27:47 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=ffff88800c8a3808 RCX=ffffffff81f74885 RDX=ffff8880158a51c0 RSI=0000000000000000 RDI=0000000000000005 RBP=ffff88801595fc20 RSP=ffff88801595fa08 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000001 R11=00000000000b6996 R12=0000000000000001 R13=ffff88801595fc24 R14=00000000000002f1 R15=0000000000001032 RIP=ffffffff814c07eb RFL=00000202 [-------] 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 00007fa769302900 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=00007fa7698b9618 CR3=000000000e65c000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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=00007ff1d10f4a20 CR3=000000000e59a000 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=28bf0b0eedf3ca8b47497f5e932242b8 XMM02=000000000011d510eff9b2d0a8fce9cb XMM03=000000000011d5e02c67c8bc2e329bc3 XMM04=04b631cfa1f760e900000000000ae988 XMM05=dfcdbad4f1609c3700000000001338d0 XMM06=e4eb71daf4ac7b0f0000000000132aa8 XMM07=e042d86d42eb936e0000000000120450 XMM08=d0037203c1ff18d6000000000011d5e0 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000