page:ffffea0006830b40 count:2 mapcount:0 mapping:ffff8881cd0ab658 index:0x42f flags: 0x2fffc000000203a(referenced|dirty|lru|active|private) BUG: unable to handle kernel paging request at ffff8881bf6ba000 raw: 02fffc000000203a ffffea0006a1f588 ffffea0006bb6388 ffff8881cd0ab658 PGD be01067 P4D be01067 PUD 1d4be9063 PMD 1bf6b9063 PTE 0 raw: 000000000000042f ffff8881c0674c78 00000002ffffffff ffff8881b3160a00 Oops: 0002 [#1] PREEMPT SMP KASAN page dumped because: kasan: bad access detected CPU: 0 PID: 5982 Comm: rs:main Q:Reg Not tainted 4.20.0-rc2+ #339 page->mem_cgroup:ffff8881b3160a00 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65 Memory state around the buggy address: Code: c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 ffff8881a0d7ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffff8881c6a4f288 EFLAGS: 00010282 ffff8881a0d7ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RAX: 0000000000000000 RBX: ffff8881be82d2a0 RCX: 0000000067173280 >ffff8881a0d80000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff RDX: 0000000067ffffe0 RSI: 0000000000000000 RDI: ffff8881bf6ba000 ^ RBP: ffff8881c6a4f2a8 R08: ffffed1037d80e40 R09: ffff8881be82d2a0 ffff8881a0d80080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff R10: ffffed1044d05a4f R11: ffff88822682d27f R12: 0000000067ffffe0 ffff8881a0d80100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff R13: 0000000000000000 R14: ffff8881be82d2a0 R15: 0000000068000000 ================================================================== FS: 00007fd6bef84700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8881bf6ba000 CR3: 00000001ca9d9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memset include/linux/string.h:337 [inline] __ext4_expand_extra_isize+0x16f/0x240 fs/ext4/inode.c:5897 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5949 [inline] ext4_mark_inode_dirty+0x8f9/0xb20 fs/ext4/inode.c:6025 ext4_dirty_inode+0x97/0xc0 fs/ext4/inode.c:6059 __mark_inode_dirty+0x7c3/0x1510 fs/fs-writeback.c:2122 generic_update_time+0x26a/0x450 fs/inode.c:1654 update_time fs/inode.c:1670 [inline] file_update_time+0x390/0x640 fs/inode.c:1880 __generic_file_write_iter+0x1dc/0x630 mm/filemap.c:3215 ext4_file_write_iter+0x390/0x1420 fs/ext4/file.c:266 call_write_iter include/linux/fs.h:1857 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd6c09e219d Code: d1 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 be fa ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 07 fb ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fd6bef82f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000400 RCX: 00007fd6c09e219d RDX: 0000000000000400 RSI: 00000000019bfa90 RDI: 0000000000000005 RBP: 00000000019bfa90 R08: 2039303a32353a36 R09: 656c6c616b7a7973 R10: 6c656e72656b2072 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fd6bef83410 R14: 00007fd6b8003720 R15: 00000000019bf890 Modules linked in: CR2: ffff8881bf6ba000 ---[ end trace c34b48f4583c5dd8 ]--- BUG: unable to handle kernel paging request at ffff8881cef0dd58 BAD RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65 Oops: 0000 [#2] PREEMPT SMP KASAN Code: c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 CPU: 1 PID: 32606 Comm: syz-executor5 Tainted: G B D 4.20.0-rc2+ #339 RSP: 0018:ffff8881c6a4f288 EFLAGS: 00010282 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:update_min_vruntime+0x132/0x1a0 kernel/sched/fair.c:517 RAX: 0000000000000000 RBX: ffff8881be82d2a0 RCX: 0000000067173280 Code: 3c 02 00 75 77 4d 85 f6 4d 8b 64 24 58 74 c0 49 8d 7e 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4b <49> 8b 46 40 4c 39 e0 4c 0f 48 e0 eb 98 4d 85 f6 0f 85 6c ff ff ff RDX: 0000000067ffffe0 RSI: 0000000000000000 RDI: ffff8881bf6ba000 RSP: 0018:ffff8881daf06d60 EFLAGS: 00010046 RBP: ffff8881c6a4f2a8 R08: ffffed1037d80e40 R09: ffff8881be82d2a0 RAX: dffffc0000000000 RBX: ffff8881dae2cd80 RCX: 1ffff110363f18e3 R10: ffffed1044d05a4f R11: ffff88822682d27f R12: 0000000067ffffe0 RDX: 1ffff11039de1bab RSI: 1ffff1103b5c59b8 RDI: ffff8881cef0dd58 R13: 0000000000000000 R14: ffff8881be82d2a0 R15: 0000000068000000 RBP: ffff8881daf06d80 R08: 0000000000000009 R09: 0000000e0000001b FS: 00007fd6bef84700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 R10: 0000000000000000 R11: dffffc0000000000 R12: 000000cc235726af CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 R13: 000000cc18684cf3 R14: ffff8881cef0dd18 R15: ffff8881b1f8c718 CR2: ffff8881bf6ba000 CR3: 00000001ca9d9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 FS: 00000000024df940(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033