EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop6): mounting ext2 file system using the ext4 subsystem ------------[ cut here ]------------ Trying to write to read-only block-device loop3 (partno 0) WARNING: CPU: 0 PID: 4149 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline] WARNING: CPU: 0 PID: 4149 at block/blk-core.c:705 submit_bio_checks+0xfec/0x1070 block/blk-core.c:833 Modules linked in: CPU: 0 PID: 4149 Comm: syz-executor.3 Not tainted 5.10.60 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:bio_check_ro block/blk-core.c:705 [inline] RIP: 0010:submit_bio_checks+0xfec/0x1070 block/blk-core.c:833 Code: 4a a9 9f ff 45 8b bf a4 05 00 00 48 89 ef 48 8d 74 24 28 e8 d6 f5 fe ff 44 89 fa 48 c7 c7 88 88 5f 83 48 89 c6 e8 bc 30 2c 01 <0f> 0b 4c 89 f7 e8 4a ac 9f ff 48 8b 3c 24 4c 8b 7d 08 e8 0d a9 9f RSP: 0018:ffffc90011c4f918 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc900070f4000 RDX: 0000000000040000 RSI: ffffffff811707d3 RDI: 0000000000000001 RBP: ffff88800917f0c0 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000000 R11: 0000ffffffffffff R12: ffff88800917f0d0 R13: ffff8880083ca2b0 R14: ffff88800917f0c8 R15: 0000000000000000 FS: 00007fe70f787700(0000) GS:ffff88807dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005137f0 CR3: 0000000038c80000 CR4: 0000000000350ef0 Call Trace: submit_bio_noacct+0x35/0x910 block/blk-core.c:1045 submit_bio+0x8a/0x2d0 block/blk-core.c:1130 submit_bh_wbc.constprop.0+0x3f0/0x450 fs/buffer.c:3054 submit_bh fs/buffer.c:3060 [inline] __sync_dirty_buffer+0x145/0x340 fs/buffer.c:3155 sync_dirty_buffer+0x16/0x20 fs/buffer.c:3168 ext4_write_inode+0x399/0x3b0 fs/ext4/inode.c:5237 write_inode fs/fs-writeback.c:1326 [inline] __writeback_single_inode+0x871/0xc10 fs/fs-writeback.c:1524 writeback_single_inode+0x1e6/0x370 fs/fs-writeback.c:1578 sync_inode fs/fs-writeback.c:2589 [inline] sync_inode_metadata+0x82/0xa0 fs/fs-writeback.c:2609 ext4_fsync_nojournal fs/ext4/fsync.c:92 [inline] ext4_sync_file+0x7d5/0xa70 fs/ext4/fsync.c:170 vfs_fsync_range+0x75/0x140 fs/sync.c:200 generic_write_sync include/linux/fs.h:2739 [inline] ext4_buffered_write_iter+0x244/0x2a0 fs/ext4/file.c:278 ext4_file_write_iter+0xea/0x1070 fs/ext4/file.c:681 call_write_iter include/linux/fs.h:1903 [inline] new_sync_write+0x2bf/0x3b0 fs/read_write.c:518 vfs_write+0x54b/0x720 fs/read_write.c:605 ksys_write+0xc7/0x1a0 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x3d/0x50 fs/read_write.c:667 do_syscall_64+0x35/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 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 EXT4-fs (sda): re-mounted. Opts: sb=0x0000000000000000,,errors=continue RSP: 002b:00007fe70f787188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 0000000000000010 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffeafa160ef R14: 00007fe70f787300 R15: 0000000000022000 irq event stamp: 2965 hardirqs last enabled at (2973): [] console_unlock+0x9d8/0xb80 kernel/printk/printk.c:2552 hardirqs last disabled at (2982): [] console_unlock+0x8e0/0xb80 kernel/printk/printk.c:2467 softirqs last enabled at (2488): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (2445): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 34da139f4eb55e44 ]--- EXT4-fs (loop6): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop6): re-mounted. Opts: (null) EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (sda): re-mounted. Opts: sb=0x0000000000000000,,errors=continue EXT4-fs (loop6): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop6): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop6): re-mounted. Opts: (null) EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue syz-executor.7 (4161) used greatest stack depth: 10840 bytes left EXT4-fs (loop6): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop6): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop6): re-mounted. Opts: (null) EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir824044589/syzkaller.I0PZDO/12/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs (loop7): mounted filesystem without journal. Opts: ,errors=continue syz-executor.3 (4190) used greatest stack depth: 10712 bytes left EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir824044589/syzkaller.I0PZDO/13/file0 supports timestamps until 2038 (0x7fffffff) mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 'syz-executor.0': attribute type 11 has an invalid length. EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir824044589/syzkaller.I0PZDO/14/file0 supports timestamps until 2038 (0x7fffffff) EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /syzkaller-testdir824044589/syzkaller.I0PZDO/15/file0 supports timestamps until 2038 (0x7fffffff) TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. FAT-fs (loop1): Unrecognized mount option "/proc/self/exe" or missing value TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. blktrace: Concurrent blktraces are not allowed on sg0 TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. blktrace: Concurrent blktraces are not allowed on sg0 blktrace: Concurrent blktraces are not allowed on sg0