EXT4-fs (sda1): re-mounted. Opts: debug_want_extra_isize=0x0000000800001,,errors=continue ================================================================== BUG: KASAN: slab-out-of-bounds in memset include/linux/string.h:330 [inline] BUG: KASAN: slab-out-of-bounds in __ext4_expand_extra_isize+0x178/0x240 fs/ext4/inode.c:5865 Write of size 8388577 at addr ffff8801c9277fa0 by task rs:main Q:Reg/5237 CPU: 1 PID: 5237 Comm: rs:main Q:Reg Not tainted 4.19.0+ #74 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b6 lib/dump_stack.c:113 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412 BUG: unable to handle kernel paging request at ffff8801d96e6224 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267 PGD bc01067 P4D bc01067 memset+0x23/0x40 mm/kasan/kasan.c:285 memset include/linux/string.h:330 [inline] __ext4_expand_extra_isize+0x178/0x240 fs/ext4/inode.c:5865 PUD 1d9bf8063 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5917 [inline] ext4_mark_inode_dirty+0x902/0xb30 fs/ext4/inode.c:5993 PMD 1ba1ef063 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 730 Comm: syz-executor1 Not tainted 4.19.0+ #74 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mm_update_next_owner+0x439/0x990 kernel/exit.c:449 ext4_dirty_inode+0x97/0xc0 fs/ext4/inode.c:6027 Code: 85 a8 fe ff ff 48 8d 78 24 48 89 f8 48 c1 e8 03 42 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 78 04 00 00 <41> 8b 9c 24 54 fc ff ff 31 ff 81 e3 00 00 20 00 89 de e8 90 c1 34 __mark_inode_dirty+0x7c3/0x1510 fs/fs-writeback.c:2129 RSP: 0018:ffff8801800a7600 EFLAGS: 00010246 RAX: 0000000000000007 RBX: ffff8801c3123480 RCX: ffffffff8149eb50 RDX: 0000000000000000 RSI: ffffffff8149eb0d RDI: ffff8801d96e6224 RBP: ffff8801800a77b8 R08: ffff880187c1e400 R09: fffffbfff1241218 R10: fffffbfff1241218 R11: ffffffff892090c3 R12: ffff8801d96e65d0 R13: ffff8801bb2761c0 R14: dffffc0000000000 R15: ffff8801bb2765e0 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8801d96e6224 CR3: 00000001bcd63000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 mark_inode_dirty include/linux/fs.h:2070 [inline] __generic_write_end+0x320/0x400 fs/buffer.c:2117 Call Trace: generic_write_end+0x6c/0x90 fs/buffer.c:2162 ext4_da_write_end+0x2e0/0xcd0 fs/ext4/inode.c:3173 exit_mm kernel/exit.c:544 [inline] do_exit+0xe6c/0x26d0 kernel/exit.c:854 generic_perform_write+0x4ca/0x6a0 mm/filemap.c:3150 __generic_file_write_iter+0x26e/0x630 mm/filemap.c:3264 ext4_file_write_iter+0x390/0x1420 fs/ext4/file.c:266 call_write_iter include/linux/fs.h:1808 [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 do_group_exit+0x177/0x440 kernel/exit.c:970 __do_sys_exit_group kernel/exit.c:981 [inline] __se_sys_exit_group kernel/exit.c:979 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:979 entry_SYSCALL_64_after_hwframe+0x49/0xbe do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 RIP: 0033:0x7fd15482f19d 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:00007fd152dd0000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000000000f5 RCX: 00007fd15482f19d RDX: 00000000000000f5 RSI: 0000000001680090 RDI: 0000000000000006 RBP: 0000000001680090 R08: 00000000016800f9 R09: 00007fd1541ac347 entry_SYSCALL_64_after_hwframe+0x49/0xbe R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 RIP: 0033:0x457569 R13: 00007fd152dd0480 R14: 0000000000000002 R15: 000000000167fe90 Code: fd b3 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffee7cd3288 EFLAGS: 00000246 The buggy address belongs to the page: ORIG_RAX: 00000000000000e7 page:ffffea0007249dc0 count:2 mapcount:0 mapping:ffff8801d37f5658 index:0x427 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000457569 RDX: 0000000000483081 RSI: 00007ffee7cd32c0 RDI: 000000000000000b flags: 0x2fffc0000001074(referenced|dirty|lru|active|private) RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 raw: 02fffc0000001074 ffffea0006e78008 ffffea0007053448 ffff8801d37f5658 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072c900 raw: 0000000000000427 ffff8801b6532dc8 00000002ffffffff ffff8801d9a24a40 R13: 00000000000003e8 R14: 000000000009c749 R15: 000000000009c71c page dumped because: kasan: bad access detected Modules linked in: page->mem_cgroup:ffff8801d9a24a40 CR2: ffff8801d96e6224 Memory state around the buggy address: ---[ end trace 517c3a04de4108e9 ]--- ffff8801c93fff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RIP: 0010:mm_update_next_owner+0x439/0x990 kernel/exit.c:449 ffff8801c93fff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Code: 85 a8 fe ff ff 48 8d 78 24 48 89 f8 48 c1 e8 03 42 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 78 04 00 00 <41> 8b 9c 24 54 fc ff ff 31 ff 81 e3 00 00 20 00 89 de e8 90 c1 34 >ffff8801c9400000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc RSP: 0018:ffff8801800a7600 EFLAGS: 00010246 ^ ffff8801c9400080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RAX: 0000000000000007 RBX: ffff8801c3123480 RCX: ffffffff8149eb50 ffff8801c9400100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RDX: 0000000000000000 RSI: ffffffff8149eb0d RDI: ffff8801d96e6224 ================================================================== RBP: ffff8801800a77b8 R08: ffff880187c1e400 R09: fffffbfff1241218 BUG: unable to handle kernel paging request at ffff8801d97ad328 R10: fffffbfff1241218 R11: ffffffff892090c3 R12: ffff8801d96e65d0 PGD bc01067 R13: ffff8801bb2761c0 R14: dffffc0000000000 R15: ffff8801bb2765e0 P4D bc01067 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 PUD 1d9bf8063 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 PMD 1ba1ef063 CR2: ffff8801d96e6224 CR3: 00000001bcd63000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 PTE 0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400