[ 58.042898] BUG: Bad rss-counter state mm:00000000f1603ce6 type:MM_FILEPAGES val:33 [ 58.043696] BUG: Bad rss-counter state mm:00000000f1603ce6 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 58.199074] ================================================================== [ 58.199085] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 58.199120] Read of size 8 at addr ffff88800eb52a50 by task sshd/219 [ 58.199135] [ 58.199139] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 58.199160] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 58.199171] Call Trace: [ 58.199176] [ 58.199183] dump_stack_lvl+0x91/0xf0 [ 58.199218] print_report+0xcc/0x620 [ 58.199250] ? __virt_addr_valid+0x102/0x340 [ 58.199273] ? vma_interval_tree_remove+0xc75/0xec0 [ 58.199297] ? vma_interval_tree_remove+0xc75/0xec0 [ 58.199321] kasan_report+0xbe/0xf0 [ 58.199352] ? vma_interval_tree_remove+0xc75/0xec0 [ 58.199379] vma_interval_tree_remove+0xc75/0xec0 [ 58.199406] vma_prepare+0xc54/0x11a0 [ 58.199429] __split_vma+0x5af/0x950 [ 58.199453] ? __pfx___split_vma+0x10/0x10 [ 58.199478] ? find_held_lock+0x2c/0x110 [ 58.199511] do_vmi_align_munmap+0x2ba/0x11f0 [ 58.199537] ? lock_is_held_type+0x9f/0x120 [ 58.199562] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 58.199586] ? mtree_range_walk+0x632/0x900 [ 58.199620] ? mas_walk+0x5c7/0x7c0 [ 58.199651] do_vmi_munmap+0x1f1/0x2b0 [ 58.199677] mmap_region+0x1f9/0x2660 [ 58.199704] ? vm_mmap_pgoff+0x15c/0x3a0 [ 58.199730] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 58.199755] ? __pfx_lock_acquire+0x10/0x10 [ 58.199777] ? __pfx_mmap_region+0x10/0x10 [ 58.199803] ? security_mmap_addr+0x7d/0xa0 [ 58.199824] ? get_unmapped_area+0x1f5/0x3f0 [ 58.199846] do_mmap+0x854/0xf00 [ 58.199872] vm_mmap_pgoff+0x1a6/0x3a0 [ 58.199899] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 58.199929] ksys_mmap_pgoff+0x3af/0x500 [ 58.199952] do_syscall_64+0x3f/0x90 [ 58.199980] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 58.200012] RIP: 0033:0x7f70d64aad82 [ 58.200026] 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 [ 58.200044] RSP: 002b:00007fff93be6dd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 58.200063] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f70d64aad82 [ 58.200077] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f70d58e4000 [ 58.200090] RBP: 00007f70d58e4000 R08: 0000000000000009 R09: 0000000000001000 [ 58.200102] R10: 0000000000000812 R11: 0000000000000206 R12: 000055fbc10a3b20 [ 58.200115] R13: 00007fff93be6df0 R14: 00007fff93be6e20 R15: 00007fff93be7180 [ 58.200135] [ 58.200140] [ 58.200143] Allocated by task 206: [ 58.200150] kasan_save_stack+0x22/0x50 [ 58.200178] kasan_set_track+0x25/0x30 [ 58.200204] __kasan_slab_alloc+0x59/0x70 [ 58.200233] kmem_cache_alloc+0x16b/0x370 [ 58.200255] vm_area_dup+0x20/0x160 [ 58.200274] __split_vma+0x170/0x950 [ 58.200293] split_vma+0xc6/0x110 [ 58.200313] mprotect_fixup+0x8d2/0xb30 [ 58.200344] do_mprotect_pkey+0x87e/0xd40 [ 58.200376] __x64_sys_mprotect+0x78/0xc0 [ 58.200408] do_syscall_64+0x3f/0x90 [ 58.200438] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 58.200468] [ 58.200470] Freed by task 19: [ 58.200478] kasan_save_stack+0x22/0x50 [ 58.200504] kasan_set_track+0x25/0x30 [ 58.200530] kasan_save_free_info+0x2b/0x50 [ 58.200552] __kasan_slab_free+0x10a/0x190 [ 58.200579] kmem_cache_free+0x10d/0x4d0 [ 58.200603] rcu_core+0x8c8/0x2860 [ 58.200620] __do_softirq+0x1b7/0x7d4 [ 58.200640] [ 58.200643] Last potentially related work creation: [ 58.200648] kasan_save_stack+0x22/0x50 [ 58.200674] __kasan_record_aux_stack+0x8e/0xa0 [ 58.200694] __call_rcu_common.constprop.0+0x6a/0xb90 [ 58.200725] remove_vma+0x139/0x170 [ 58.200741] do_vmi_align_munmap+0xd4a/0x11f0 [ 58.200762] do_vmi_munmap+0x1f1/0x2b0 [ 58.200783] __vm_munmap+0x138/0x3a0 [ 58.200804] __x64_sys_munmap+0x59/0x80 [ 58.200826] do_syscall_64+0x3f/0x90 [ 58.200850] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 58.200878] [ 58.200881] The buggy address belongs to the object at ffff88800eb529f8 [ 58.200881] which belongs to the cache vm_area_struct of size 168 [ 58.200896] The buggy address is located 88 bytes inside of [ 58.200896] freed 168-byte region [ffff88800eb529f8, ffff88800eb52aa0) [ 58.200915] [ 58.200917] The buggy address belongs to the physical page: [ 58.200923] page:000000002b592452 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeb52 [ 58.200944] memcg:ffff88800fc5fa01 [ 58.200950] flags: 0x100000000000200(slab|node=0|zone=1) [ 58.200965] page_type: 0xffffffff() [ 58.200981] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 58.200999] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fc5fa01 [ 58.201009] page dumped because: kasan: bad access detected [ 58.201016] [ 58.201018] Memory state around the buggy address: [ 58.201026] ffff88800eb52900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 58.201038] ffff88800eb52980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 58.201051] >ffff88800eb52a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.201060] ^ [ 58.201069] ffff88800eb52a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 58.201082] ffff88800eb52b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.201092] ================================================================== [ 58.201138] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 60.394972] BUG: Bad rss-counter state mm:000000003afedcbe type:MM_FILEPAGES val:33 [ 60.396031] BUG: Bad rss-counter state mm:000000003afedcbe type:MM_ANONPAGES val:22 [ 60.892006] BUG: Bad rss-counter state mm:00000000f6eb2bb4 type:MM_FILEPAGES val:33 [ 60.893120] BUG: Bad rss-counter state mm:00000000f6eb2bb4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:40468' (ECDSA) to the list of known hosts. [ 61.021090] general protection fault, probably for non-canonical address 0xe0c61c23e0000019: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 61.022495] KASAN: maybe wild-memory-access in range [0x0631011f000000c8-0x0631011f000000cf] [ 61.023503] CPU: 0 PID: 242 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 61.024530] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 61.025518] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 61.026191] Code: 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 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 61.028323] RSP: 0018:ffff88801679f8a8 EFLAGS: 00010213 [ 61.028962] RAX: ffff888019be72c8 RBX: ffff88800e8f8128 RCX: ffffffff844ce9f9 [ 61.029834] RDX: 00c62023e0000019 RSI: 0000000000000008 RDI: ffff88800f52e948 [ 61.030693] RBP: ffff8880165d5340 R08: ffff88800f52e948 R09: 0000000000000000 [ 61.031532] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff88800f52e940 [ 61.032377] R13: dffffc0000000000 R14: 0631011f000000ce R15: ffffffff816e61c0 [ 61.033223] FS: 00007fc3fbbb5900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 61.034179] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.034883] CR2: 00007fc3fbb5c000 CR3: 000000001bb5c000 CR4: 0000000000350ef0 [ 61.035724] Call Trace: [ 61.036038] [ 61.036318] ? die_addr+0x3c/0xa0 [ 61.036759] ? exc_general_protection+0x125/0x220 [ 61.037370] ? asm_exc_general_protection+0x26/0x30 [ 61.038001] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 61.038730] ? __rb_insert_augmented+0x5e9/0x8b0 [ 61.039316] ? __rb_insert_augmented+0x9d/0x8b0 [ 61.039903] ? __rb_insert_augmented+0x5e9/0x8b0 [ 61.040490] vma_prepare+0xa1a/0x11a0 [ 61.040966] __split_vma+0x5af/0x950 [ 61.041433] ? __pfx___split_vma+0x10/0x10 [ 61.041986] ? lock_acquire+0x434/0x4c0 [ 61.042486] do_vmi_align_munmap+0x361/0x11f0 [ 61.043047] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 61.043646] ? mtree_range_walk+0x632/0x900 [ 61.044190] ? mas_walk+0x5c7/0x7c0 [ 61.044658] do_vmi_munmap+0x1f1/0x2b0 [ 61.045143] mmap_region+0x1f9/0x2660 [ 61.045623] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 61.046331] ? __pfx_lock_acquire+0x10/0x10 [ 61.046859] ? __pfx_mmap_region+0x10/0x10 [ 61.047383] ? security_mmap_addr+0x7d/0xa0 [ 61.047907] ? get_unmapped_area+0x1f5/0x3f0 [ 61.048455] do_mmap+0x854/0xf00 [ 61.048897] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.049396] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 61.049967] ksys_mmap_pgoff+0x3af/0x500 [ 61.050476] do_syscall_64+0x3f/0x90 [ 61.050956] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.051591] RIP: 0033:0x7fc3fc747d82 [ 61.052039] 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 [ 61.054149] RSP: 002b:00007ffc38beab38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 61.055043] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc3fc747d82 [ 61.055893] RDX: 0000000000000005 RSI: 0000000000003000 RDI: 00007fc3fbb55000 [ 61.056735] RBP: 00007fc3fbb55000 R08: 0000000000000008 R09: 0000000000002000 [ 61.057579] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d116a9bea0 [ 61.058430] R13: 00007ffc38beab50 R14: 00007ffc38beab80 R15: 00007ffc38beaee0 [ 61.059294] [ 61.059591] Modules linked in: [ 61.060583] ---[ end trace 0000000000000000 ]--- [ 61.061384] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 61.062384] Code: 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 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 61.064822] RSP: 0018:ffff88801679f8a8 EFLAGS: 00010213 [ 61.065756] RAX: ffff888019be72c8 RBX: ffff88800e8f8128 RCX: ffffffff844ce9f9 [ 61.066969] RDX: 00c62023e0000019 RSI: 0000000000000008 RDI: ffff88800f52e948 [ 61.068089] RBP: ffff8880165d5340 R08: ffff88800f52e948 R09: 0000000000000000 [ 61.069089] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff88800f52e940 [ 61.070189] R13: dffffc0000000000 R14: 0631011f000000ce R15: ffffffff816e61c0 [ 61.071199] FS: 00007fc3fbbb5900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 61.072238] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.072960] CR2: 00007fc3fbb5c000 CR3: 000000001bb5c000 CR4: 0000000000350ef0 VM DIAGNOSIS: 00:16:18 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=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 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=00007fa811bee0c0 CR3=000000000ea8a000 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=8b3d9e0f062e6f823c491572918b2a5a XMM02=ec2efd57dc4c00df000000000011c560 XMM03=4b8dba0014335367000000000011c630 XMM04=26fef34e97ed777d00000000000ae988 XMM05=83594ee05b8d38950000000000132ce0 XMM06=f2b6fd19d9e6c9ea0000000000131730 XMM07=e042d86d42eb936e000000000011f480 XMM08=4b8dba0014335367000000000011c630 XMM09=00000000000000000000000000000000 XMM10=00000000000000002000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff85d3d010 RBX=0000000000000001 RCX=ffffffff8153425b RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=ffffffff812589bb RSP=ffff88806cf09e80 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000000 R12=0000000000000000 R13=ffff88806cf39d38 R14=ffff88806cf39eb8 R15=ffff8880084c1008 RIP=ffffffff812d12ec 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 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=00007ffd07f24000 CR3=000000000e104000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000