Hello, syzbot found the following issue on: HEAD commit: 42eb8fdac2fc Merge tag 'gfs2-v5.16-rc2-fixes' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=137ec159b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=6d3b8fd1977c1e73 dashboard link: https://syzkaller.appspot.com/bug?extid=d0dd8d6b123d46c4dcf2 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d0dd8d6b123d46c4dcf2@xxxxxxxxxxxxxxxxxxxxxxxxx WARNING: CPU: 1 PID: 17813 at fs/fuse/file.c:1833 fuse_write_file_get fs/fuse/file.c:1833 [inline] WARNING: CPU: 1 PID: 17813 at fs/fuse/file.c:1833 fuse_write_file_get fs/fuse/file.c:1830 [inline] WARNING: CPU: 1 PID: 17813 at fs/fuse/file.c:1833 fuse_writepage_locked+0xa84/0xd40 fs/fuse/file.c:1918 Modules linked in: CPU: 1 PID: 17813 Comm: syz-executor.2 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:fuse_write_file_get fs/fuse/file.c:1833 [inline] RIP: 0010:fuse_write_file_get fs/fuse/file.c:1830 [inline] RIP: 0010:fuse_writepage_locked+0xa84/0xd40 fs/fuse/file.c:1918 Code: 20 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 bc f4 ff ff ff e9 2d ff ff ff e8 8a dd c6 fe 48 8b 3c 24 e8 b1 fe a3 06 e8 7c dd c6 fe <0f> 0b 49 8d be c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa RSP: 0018:ffffc90018f3f5f0 EFLAGS: 00010212 RAX: 000000000000a311 RBX: ffff8880834ba688 RCX: ffffc9000d9e9000 RDX: 0000000000040000 RSI: ffffffff82b10a64 RDI: 0000000000000001 RBP: ffffea0000263e40 R08: 0000000000000000 R09: ffff8880834ba7a3 R10: ffffed10106974f4 R11: 000000000000001f R12: ffff8880834ba1c0 R13: ffffea000258d080 R14: ffff888018b83c00 R15: ffff88814a7ac800 FS: 00007f75e4cad700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc15c0ef7c CR3: 0000000073f74000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <TASK> fuse_writepage+0x104/0x160 fs/fuse/file.c:1976 writeout mm/migrate.c:826 [inline] fallback_migrate_page mm/migrate.c:850 [inline] move_to_new_page+0x7ea/0xf00 mm/migrate.c:901 __unmap_and_move mm/migrate.c:1063 [inline] unmap_and_move mm/migrate.c:1204 [inline] migrate_pages+0x27f5/0x3810 mm/migrate.c:1481 compact_zone+0x1abb/0x3860 mm/compaction.c:2399 compact_node+0x129/0x1f0 mm/compaction.c:2683 compact_nodes mm/compaction.c:2699 [inline] sysctl_compaction_handler+0x10e/0x160 mm/compaction.c:2741 proc_sys_call_handler+0x437/0x620 fs/proc/proc_sysctl.c:586 call_write_iter include/linux/fs.h:2162 [inline] new_sync_write+0x429/0x660 fs/read_write.c:503 vfs_write+0x7cd/0xae0 fs/read_write.c:590 ksys_write+0x12d/0x250 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f75e7737ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f75e4cad188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f75e784af60 RCX: 00007f75e7737ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f75e7791f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee68ffeff R14: 00007f75e4cad300 R15: 0000000000022000 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
