BUG: unable to handle kernel paging request at ffffebe000000008 PGD 0 P4D 0 Oops: 0000 [#1] SMP KASAN CPU: 1 PID: 14468 Comm: syz-executor2 Not tainted 4.18.0+ #190 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:virt_to_head_page include/linux/mm.h:657 [inline] RIP: 0010:virt_to_cache mm/slab.c:399 [inline] RIP: 0010:kfree+0xa0/0x260 mm/slab.c:3809 Code: 82 cb 01 00 00 48 ba 00 00 00 80 ff 77 00 00 48 01 c2 48 89 df 48 b8 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 c2 <48> 8b 42 08 a8 01 48 8d 48 ff 48 0f 45 d1 4c 8b 6a 18 49 63 75 74 RSP: 0018:ffff88019a68f520 EFLAGS: 00010086 RAX: ffffea0000000000 RBX: 0000000000000282 RCX: 0000000000000000 RDX: ffffebe000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88019a68f540 R08: ffffed003b6246d7 R09: ffffed003b6246d6 R10: ffffed003b6246d6 R11: ffff8801db1236b3 R12: 0000000000000282 R13: ffffffff8680d7aa R14: ffff88019a68f690 R15: ffff88019a523200 FS: 00007f29b4cfa700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffebe000000008 CR3: 00000001bc665000 CR4: 00000000001406e0 Call Trace: p9_client_version net/9p/client.c:1010 [inline] p9_client_create+0xfea/0x1770 net/9p/client.c:1070 v9fs_session_init+0x21a/0x1a80 fs/9p/v9fs.c:400 v9fs_mount+0x7c/0x900 fs/9p/vfs_super.c:135 mount_fs+0xae/0x328 fs/super.c:1277 vfs_kern_mount.part.34+0xdc/0x4e0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2542 [inline] do_mount+0x581/0x30e0 fs/namespace.c:2872 ksys_mount+0x12d/0x140 fs/namespace.c:3088 __do_sys_mount fs/namespace.c:3102 [inline] __se_sys_mount fs/namespace.c:3099 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3099 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f29b4cf9c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f29b4cfa6d4 RCX: 0000000000457089 RDX: 00000000200003c0 RSI: 0000000020000380 RDI: 0000000000000000 RBP: 00000000009300a0 R08: 00000000200004c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d2768 R14: 00000000004c7be5 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: --------------------------------- syz-exec-14210 1...2 240617102us : 0: u-1788216464 syz-exec-14210 1...2 240617113us : 0: u-1788216464 syz-exec-14210 1...2 240617118us : 0: u-1788216464 syz-exec-14210 1...2 240617123us : 0: u-1788216464 syz-exec-14210 1...2 240617127us : 0: u-1788216464 syz-exec-14210 1...2 240617132us : 0: u-1788216464 syz-exec-14210 1...2 240617136us : 0: u-1788216464 syz-exec-14210 1...2 240617140us : 0: u-1788216464 syz-exec-14210 1...2 240617145us : 0: u-1788216464 syz-exec-14210 1...2 240617149us : 0: u-1788216464 syz-exec-14210 1...2 240617154us : 0: u-1788216464 syz-exec-14210 1...2 240617158us : 0: u-1788216464 syz-exec-14210 1...2 240617163us : 0: u-1788216464 syz-exec-14210 1...2 240617167us : 0: u-1788216464 syz-exec-14210 1...2 240617171us : 0: u-1788216464 syz-exec-14210 1...2 240617176us : 0: u-1788216464 syz-exec-14210 1...2 240617181us : 0: u-1788216464 syz-exec-14210 1...2 240617185us : 0: u-1788216464 syz-exec-14210 1...2 240617190us : 0: u-1788216464 syz-exec-14210 1...2 240617195us : 0: u-1788216464 syz-exec-14210 1...2 240617207us : 0: u-1788216464 syz-exec-14210 1...2 240617211us : 0: u-1788216464 syz-exec-14210 1...2 240617216us : 0: u-1788216464 syz-exec-14210 1...2 240617221us : 0: u-1788216464 syz-exec-14210 1...2 240617226us : 0: u-1788216464 syz-exec-14210 1...2 240617231us : 0: u-1788216464 syz-exec-14210 1...2 240617235us : 0: u-1788216464 syz-exec-14210 1...2 240617240us : 0: u-1788216464 syz-exec-14210 1...2 240617245us : 0: u-1788216464 syz-exec-14210 1...2 240617249us : 0: u-1788216464 syz-exec-14210 1...2 240617267us : 0: u-1788216464 syz-exec-14210 1...2 240617872us : 0: u-1788216464 syz-exec-14210 1...2 240617878us : 0: u-1788216464 syz-exec-14210 1...2 240617883us : 0: u-1788216464 syz-exec-14210 1...2 240617888us : 0: u-1788216464 syz-exec-14210 1...2 240617893us : 0: u-1788216464 syz-exec-14210 1...2 240617898us : 0: u-1788216464 syz-exec-14210 1...2 240617903us : 0: u-1788216464 syz-exec-14210 1...2 240617907us : 0: u-1788216464 syz-exec-14210 1...2 240617912us : 0: u-1788216464 syz-exec-14210 1...2 240617917us : 0: u-1788216464 syz-exec-14210 1...2 240617922us : 0: u-1788216464 syz-exec-14210 1...2 240617927us : 0: u-1788216464 syz-exec-14210 1...2 240617932us : 0: u-1788216464 syz-exec-14210 1...2 240617936us : 0: u-1788216464 syz-exec-14210 1...2 240617942us : 0: u-1788216464 syz-exec-14210 1...2 240617947us : 0: u-1788216464 syz-exec-14210 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u-1788216464 syz-exec-14210 1...2 240618487us : 0: u-1788216464 syz-exec-14210 1...2 240618493us : 0: u-1788216464 syz-exec-14210 1...2 240618498us : 0: u-1788216464 syz-exec-14210 1...2 240618503us : 0: u-1788216464 syz-exec-14210 1...2 240618508us : 0: u-1788216464 syz-exec-14210 1...2 240618514us : 0: u-1788216464 syz-exec-14210 1...2 240618519us : 0: u-1788216464 syz-exec-14210 1...2 240618524us : 0: u-1788216464 syz-exec-14210 1...2 240618529us : 0: u-1788216464 syz-exec-14210 1...2 240618534us : 0: u-1788216464 syz-exec-14210 1...2 240618540us : 0: u-1788216464 syz-exec-14210 1...2 240618544us : 0: u-1788216464 syz-exec-14210 1...2 240618549us : 0: u-1788216464 syz-exec-14210 1...2 240618555us : 0: u-1788216464 syz-exec-14210 1...2 240618559us : 0: u-1788216464 syz-exec-14210 1...2 240618564us : 0: u-1788216464 syz-exec-14210 1...2 240618569us : 0: u-1788216464 syz-exec-14210 1...2 240618573us : 0: u-1788216464 syz-exec-14210 1...2 240618580us : 0: u-1788216464 syz-exec-14210 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u-1788216464 syz-exec-14210 1...2 240619020us : 0: u-1788216464 syz-exec-14210 1...2 240619025us : 0: u-1788216464 syz-exec-14210 1...2 240619031us : 0: u-1788216464 syz-exec-14210 1...2 240619035us : 0: u-1788216464 syz-exec-14210 1...2 240619041us : 0: u-1788216464 syz-exec-14210 1...2 240619046us : 0: u-1788216464 syz-exec-14210 1...2 240619052us : 0: u-1788216464 syz-exec-14210 1...2 240619059us : 0: u-1788216464 syz-exec-14210 1...2 240619065us : 0: u-1788216464 syz-exec-14210 1...2 240619070us : 0: u-1788216464 syz-exec-14210 1...2 240619076us : 0: u-1788216464 syz-exec-14210 1...2 240619080us : 0: u-1788216464 syz-exec-14210 1...2 240619086us : 0: u-1788216464 syz-exec-14210 1...2 240619091us : 0: u-1788216464 syz-exec-14210 1...2 240619096us : 0: u-1788216464 syz-exec-14210 1...2 240619101us : 0: u-1788216464 syz-exec-14210 1...2 240619106us : 0: u-1788216464 syz-exec-14210 1...2 240619112us : 0: u-1788216464 syz-exec-14210 1...2 240619117us : 0: u-1788216464 syz-exec-14210 1...2 240619122us : 0: u-1788216464 syz-exec-14210 1...2 240619126us : 0: u-1788216464 syz-exec-14210 1...2 240619131us : 0: u-1788216464 syz-exec-14210 1...2 240619136us : 0: u-1788216464 syz-exec-14210 1...2 240619142us : 0: u-1788216464 syz-exec-14210 1...2 240619147us : 0: u-1788216464 syz-exec-14210 1.N.2 240619199us : 0: u-1788216464 syz-exec-14210 1...2 240620404us : 0: u-1788216464 syz-exec-14210 1...2 240620412us : 0: u-1788216464 syz-exec-14210 1...2 240620416us : 0: u-1788216464 syz-exec-14210 1...2 240620422us : 0: u-1788216464 syz-exec-14210 1...2 240620427us : 0: u-1788216464 syz-exec-14210 1...2 240620432us : 0: u-1788216464 syz-exec-14210 1...2 240620438us : 0: u-1788216464 syz-exec-14210 1...2 240620444us : 0: u-1788216464 syz-exec-14210 1...2 240620449us : 0: u-1788216464 syz-exec-14210 1...2 240620455us : 0: u-1788216464 syz-exec-14210 1...2 240620460us : 0: u-1788216464 syz-exec-14210 1...2 240620466us : 0: u-1788216464 syz-exec-14210 1...2 240620472us : 0: u-1788216464 syz-exec-14210 1...2 240620478us : 0: u-1788216464 syz-exec-14210 1...2 240620484us : 0: u-1788216464 syz-exec-14210 1...2 240620488us : 0: u-1788216464 syz-exec-14210 1...2 240620494us : 0: u-1788216464 syz-exec-14210 1...2 240620499us : 0: u-1788216464 syz-exec-14210 1...2 240620504us : 0: u-1788216464 syz-exec-14210 1...2 240620509us : 0: u-1788216464 syz-exec-14210 1...2 240620515us : 0: u-1788216464 syz-exec-14210 1...2 240620519us : 0: u-1788216464 syz-exec-14210 1...2 240620525us : 0: u-1788216464 syz-exec-14210 1...2 240620530us : 0: u-1788216464 syz-exec-14210 1...2 240620535us : 0: u-1788216464 syz-exec-14210 1...2 240620539us : 0: u-1788216464 syz-exec-14210 1...2 240620545us : 0: u-1788216464 syz-exec-14210 1...2 240620550us : 0: u-1788216464 syz-exec-14210 1...2 240620555us : 0: u-1788216464 syz-exec-14210 1...2 240620559us : 0: u-1788216464 syz-exec-14210 1...2 240620564us : 0: u-1788216464 --------------------------------- CR2: ffffebe000000008 ---[ end trace 139005c86546513b ]--- RIP: 0010:virt_to_head_page include/linux/mm.h:657 [inline] RIP: 0010:virt_to_cache mm/slab.c:399 [inline] RIP: 0010:kfree+0xa0/0x260 mm/slab.c:3809 Code: 82 cb 01 00 00 48 ba 00 00 00 80 ff 77 00 00 48 01 c2 48 89 df 48 b8 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 c2 <48> 8b 42 08 a8 01 48 8d 48 ff 48 0f 45 d1 4c 8b 6a 18 49 63 75 74 RSP: 0018:ffff88019a68f520 EFLAGS: 00010086 RAX: ffffea0000000000 RBX: 0000000000000282 RCX: 0000000000000000 RDX: ffffebe000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88019a68f540 R08: ffffed003b6246d7 R09: ffffed003b6246d6 R10: ffffed003b6246d6 R11: ffff8801db1236b3 R12: 0000000000000282 R13: ffffffff8680d7aa R14: ffff88019a68f690 R15: ffff88019a523200 FS: 00007f29b4cfa700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffebe000000008 CR3: 00000001bc665000 CR4: 00000000001406e0