------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2714! invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 PID: 4208 Comm: syz-executor.6 Not tainted 5.10.109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:ext4_writepages+0x2a7d/0x3590 fs/ext4/inode.c:2714 Code: cd ff e9 0e e4 ff ff e8 41 60 a2 ff 0f 0b 8b 84 24 bc 00 00 00 4c 8b 74 24 38 31 db 89 44 24 18 e9 71 f9 ff ff e8 23 60 a2 ff <0f> 0b e8 1c 60 a2 ff 0f b6 ac 24 0b 01 00 00 89 5c 24 18 e9 4e e7 RSP: 0018:ffff888045dc75a0 EFLAGS: 00010212 RAX: 00000000000013e6 RBX: 0000000000000001 RCX: ffffc90003c03000 RDX: 0000000000040000 RSI: ffffffff819d4eed RDI: 0000000000000007 RBP: ffff88801d2c58e8 R08: 0000000000000000 R09: ffff88801d2c58ef R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888009688000 R14: ffff88801d2c5bd0 R15: 00000000000000bc FS: 00007f77d33e1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d330000 CR3: 000000000d618000 CR4: 0000000000350ee0 Call Trace: do_writepages+0xee/0x290 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x247/0x2f0 mm/filemap.c:422 file_write_and_wait_range+0xb2/0x120 mm/filemap.c:761 ext4_sync_file+0x225/0xf30 fs/ext4/fsync.c:151 vfs_fsync_range+0x13d/0x230 fs/sync.c:200 generic_write_sync include/linux/fs.h:2741 [inline] ext4_buffered_write_iter+0x36a/0x4d0 fs/ext4/file.c:278 ext4_file_write_iter+0x4ee/0x1890 fs/ext4/file.c:681 call_write_iter include/linux/fs.h:1903 [inline] new_sync_write+0x42c/0x660 fs/read_write.c:518 vfs_write+0x743/0xa20 fs/read_write.c:605 ksys_write+0x12d/0x250 fs/read_write.c:658 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77d5e8cb19 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:00007f77d33e1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f77d5fa0020 RCX: 00007f77d5e8cb19 RDX: 0000000000000010 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007f77d5ee6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc8704a41f R14: 00007f77d33e1300 R15: 0000000000022000 Modules linked in: ---[ end trace 173a8f89239c22a0 ]--- RIP: 0010:ext4_writepages+0x2a7d/0x3590 fs/ext4/inode.c:2714 Code: cd ff e9 0e e4 ff ff e8 41 60 a2 ff 0f 0b 8b 84 24 bc 00 00 00 4c 8b 74 24 38 31 db 89 44 24 18 e9 71 f9 ff ff e8 23 60 a2 ff <0f> 0b e8 1c 60 a2 ff 0f b6 ac 24 0b 01 00 00 89 5c 24 18 e9 4e e7 RSP: 0018:ffff888045dc75a0 EFLAGS: 00010212 RAX: 00000000000013e6 RBX: 0000000000000001 RCX: ffffc90003c03000 RDX: 0000000000040000 RSI: ffffffff819d4eed RDI: 0000000000000007 RBP: ffff88801d2c58e8 R08: 0000000000000000 R09: ffff88801d2c58ef R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888009688000 R14: ffff88801d2c5bd0 R15: 00000000000000bc FS: 00007f77d33e1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d330000 CR3: 000000000d618000 CR4: 0000000000350ee0 udc-core: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_probe_driver returned -19 udc-core: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_probe_driver returned -19 audit: type=1326 audit(1650293912.768:38): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4164 comm="syz-executor.1" exe="/syz-executor.1" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7f62ac346b19 code=0x0 EXT4-fs (loop1): Unrecognized mount option "¯" or missing value EXT4-fs (loop1): Unrecognized mount option "¯" or missing value udc-core: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_probe_driver returned -19 udc-core: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_probe_driver returned -19 kmemleak: 56 new suspected memory leaks (see /sys/kernel/debug/kmemleak)