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S3vWVfuLrCUKjutOd3QNDlvGRpgbUi2Ub95NojOa/hjPZsKenjdZKy3+/Qt/0C+6Yvj8DRo1ist+ny5kfgtgJ4HEBNG6vh+6bUh7M3mQTYRX76503lb7zs9rxQLHJc9BCUQABE39TD2fHUwRHEsDo5vGkDkXl+U+MfJoycKOuX0+Fivni7TprGo9Vbx+b43Z+/+GTSxTnSm1JWs9mDs8tOgCnO1jQNJP2vtURCj55MBf0ihpgMQ+EMeVjG16durH5pyR0csgxBdMErkwUGMvv+KN1P1byAdi2lT7hPg6ctQ+2vOWawpu5x0JL9HNF10r9vuD8U0u7EL5WDPNTs1N12+6Bkm3MqjaiHj1oimrijPPuFMCy+65bpDATRjyNei0AmRe5zhEwHKz0OYaY7K2iVrzUldn897o5hFOwfS91v895uuVom2TTbeNxO7K864llIDfbG7QVEaKt3itPRLLtmKCCbAuH50jwEqcm X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Good day, dear maintainers,=0A= =0A= We found a bug using a modified kernel configuration file used by syzbot.= =0A= =0A= We enhanced the coverage of the configuration file using our tool, klocaliz= er.=0A= =0A= Kernel Branch:=A06.2.0-rc5-next-20230124=0A= Kernel config:=A0https://drive.google.com/file/d/1MZSgIF4R9QfikEuF5siUIZVPc= e-GiJQK/view?usp=3Dsharing=0A= Reproducer:=A0https://drive.google.com/file/d/1H5KWkT9VVMWTUVVgIaZi6J-fmukR= x-BM/view?usp=3Dsharing=0A= =0A= Thank you!=0A= =0A= Best regards,=0A= Sanan Hasanov=0A= =0A= head: 0000000000020000 0000000000000000 00000004ffffffff ffff8881002b8000= =0A= page dumped because: VM_BUG_ON_PAGE(!first && (flags & (( rmap_t)((((1UL)))= << (0)))))=0A= ------------[ cut here ]------------=0A= kernel BUG at mm/rmap.c:1248!=0A= invalid opcode: 0000 [#1] PREEMPT SMP KASAN=0A= CPU: 7 PID: 14932 Comm: syz-executor.1 Not tainted 6.2.0-rc5-next-20230124 = #1=0A= Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/= 2014=0A= RIP: 0010:page_add_anon_rmap+0xddd/0x11c0 mm/rmap.c:1248=0A= Code: c0 ff 48 8b 34 24 48 89 df e8 1f ff 07 00 49 89 c6 e9 85 f6 ff ff e8 = 52 73 c0 ff 48 c7 c6 c0 3c d8 89 48 89 ef e8 b3 23 f8 ff <0f> 0b e8 3c 73 c= 0 ff 48 c7 c6 00 3b d8 89 48 89 ef e8 9d 23 f8 ff=0A= RSP: 0018:ffffc9000c56f7b0 EFLAGS: 00010293=0A= RAX: 0000000000000000 RBX: ffff88807efc6f30 RCX: 0000000000000000=0A= RDX: ffff8880464fd7c0 RSI: ffffffff81be733d RDI: fffff520018adedb=0A= RBP: ffffea0000c68080 R08: 0000000000000056 R09: 0000000000000000=0A= R10: 0000000000000001 R11: 0000000000000001 R12: ffffea0000c68000=0A= R13: 0000000000000001 R14: ffffea0000c68088 R15: 0000000000000000=0A= FS: 00007f717898a700(0000) GS:ffff888119f80000(0000) knlGS:000000000000000= 0=0A= CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033=0A= CR2: 00007f7178947d78 CR3: 000000004a9e6000 CR4: 0000000000350ee0=0A= Call Trace:=0A= =0A= remove_migration_pte+0xaa6/0x1390 mm/migrate.c:261=0A= rmap_walk_anon+0x23a/0x5b0 mm/rmap.c:2433=0A= rmap_walk+0x96/0xd0 mm/rmap.c:2509=0A= remove_migration_ptes mm/migrate.c:294 [inline]=0A= migrate_folio_move mm/migrate.c:1307 [inline]=0A= migrate_pages_batch+0x15f8/0x3910 mm/migrate.c:1809=0A= migrate_pages+0x1b56/0x22e0 mm/migrate.c:1961=0A= do_mbind mm/mempolicy.c:1329 [inline]=0A= kernel_mbind+0x4c0/0x790 mm/mempolicy.c:1476=0A= do_syscall_x64 arch/x86/entry/common.c:50 [inline]=0A= do_syscall_64+0x39/0x80 arch/x86/entry/common.c:80=0A= entry_SYSCALL_64_after_hwframe+0x63/0xcd=0A= RIP: 0033:0x7f717788edcd=0A= Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 = 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff f= f 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48=0A= RSP: 002b:00007f7178989bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed=0A= RAX: ffffffffffffffda RBX: 00007f71779bc050 RCX: 00007f717788edcd=0A= RDX: 0000000000000004 RSI: 0000000000001000 RDI: 0000000020002000=0A= RBP: 00007f71778fc59c R08: 00000000000007ff R09: 0000000000000002=0A= R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000=0A= R13: 00007ffd2c012f6f R14: 00007ffd2c013110 R15: 00007f7178989d80=0A= =0A= Modules linked in:=0A= ---[ end trace 0000000000000000 ]---=0A= RIP: 0010:page_add_anon_rmap+0xddd/0x11c0 mm/rmap.c:1248=0A= Code: c0 ff 48 8b 34 24 48 89 df e8 1f ff 07 00 49 89 c6 e9 85 f6 ff ff e8 = 52 73 c0 ff 48 c7 c6 c0 3c d8 89 48 89 ef e8 b3 23 f8 ff <0f> 0b e8 3c 73 c= 0 ff 48 c7 c6 00 3b d8 89 48 89 ef e8 9d 23 f8 ff=0A= RSP: 0018:ffffc9000c56f7b0 EFLAGS: 00010293=0A= RAX: 0000000000000000 RBX: ffff88807efc6f30 RCX: 0000000000000000=0A= RDX: ffff8880464fd7c0 RSI: ffffffff81be733d RDI: fffff520018adedb=0A= RBP: ffffea0000c68080 R08: 0000000000000056 R09: 0000000000000000=0A= R10: 0000000000000001 R11: 0000000000000001 R12: ffffea0000c68000=0A= R13: 0000000000000001 R14: ffffea0000c68088 R15: 0000000000000000=0A= FS: 00007f717898a700(0000) GS:ffff888119f80000(0000) knlGS:000000000000000= 0=0A= CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033=0A= CR2: 00007f7178947d78 CR3: 000000004a9e6000 CR4: 0000000000350ee0=0A=