INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-kasan-gce-2,10.128.15.202' (ECDSA) to the list of known hosts. 2017/11/09 18:11:54 parsed 1 programs 2017/11/09 18:11:54 executed programs: 0 syzkaller login: [ 41.718502] loop_reread_partitions: partition scan of loop0 (2°]€fI¸Òæ¶Ì”B±!S,›ùDÏ') failed (rc=-13) [ 41.722185] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.724534] print_req_error: I/O error, dev loop0, sector 0 [ 41.725428] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 41.744414] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.751858] print_req_error: I/O error, dev loop0, sector 0 [ 41.757581] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 41.780304] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.787748] print_req_error: I/O error, dev loop0, sector 0 [ 41.793475] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 41.824386] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.832289] print_req_error: I/O error, dev loop0, sector 0 [ 41.838068] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 41.870277] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.877718] print_req_error: I/O error, dev loop0, sector 0 [ 41.883460] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 41.911840] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.919275] print_req_error: I/O error, dev loop0, sector 0 [ 41.925041] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 41.966184] loop: Write error at byte offset 18446744073709547520, length 512. [ 41.973700] print_req_error: I/O error, dev loop0, sector 0 [ 41.979434] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 42.012251] loop: Write error at byte offset 18446744073709547520, length 512. [ 42.019675] print_req_error: I/O error, dev loop0, sector 0 [ 42.025393] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 42.062346] loop: Write error at byte offset 18446744073709547520, length 512. [ 42.069920] print_req_error: I/O error, dev loop0, sector 0 [ 42.075732] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 42.104206] loop: Write error at byte offset 18446744073709547520, length 512. [ 42.111643] print_req_error: I/O error, dev loop0, sector 0 [ 42.117359] Buffer I/O error on dev loop0, logical block 0, lost async page write [ 42.206141] loop_reread_partitions: partition scan of loop0 () failed (rc=-13) [ 42.245515] loop_reread_partitions: partition scan of loop0 (2°]€fI¸Òæ¶Ì”B±!S,›ùDÏ') failed (rc=-13) 2017/11/09 18:11:59 executed programs: 372 [ 46.710435] ------------[ cut here ]------------ [ 46.717772] WARNING: CPU: 0 PID: 4486 at fs/buffer.c:1148 mark_buffer_dirty+0x48b/0x5d0 [ 46.726516] Kernel panic - not syncing: panic_on_warn set ... [ 46.726516] [ 46.733889] CPU: 0 PID: 4486 Comm: syz-executor6 Not tainted 4.14.0-rc8+ #169 [ 46.741132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.750460] Call Trace: [ 46.753034] dump_stack+0x194/0x257 [ 46.756640] ? arch_local_irq_restore+0x53/0x53 [ 46.761288] panic+0x1e4/0x417 [ 46.764471] ? __warn+0x1d9/0x1d9 [ 46.767912] ? show_regs_print_info+0x65/0x65 [ 46.772409] ? mark_buffer_dirty+0x48b/0x5d0 [ 46.776795] __warn+0x1c4/0x1d9 [ 46.780057] ? mark_buffer_dirty+0x48b/0x5d0 [ 46.784437] report_bug+0x211/0x2d0 [ 46.788045] fixup_bug+0x40/0x90 [ 46.791381] do_trap+0x260/0x390 [ 46.794725] do_error_trap+0x120/0x390 [ 46.798596] ? do_trap+0x390/0x390 [ 46.802113] ? mark_buffer_dirty+0x48b/0x5d0 [ 46.806493] ? check_same_owner+0x320/0x320 [ 46.810800] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.815618] do_invalid_op+0x1b/0x20 [ 46.819308] invalid_op+0x18/0x20 [ 46.822742] RIP: 0010:mark_buffer_dirty+0x48b/0x5d0 [ 46.827725] RSP: 0018:ffff8801c7e9f188 EFLAGS: 00010297 [ 46.833068] RAX: ffff8801c74e0440 RBX: ffff8801c3b6a9d8 RCX: 0000000000000200 [ 46.840315] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801c3b6a9d8 [ 46.847553] RBP: ffff8801c7e9f298 R08: 0000000000000200 R09: ffffea00073f4640 [ 46.854807] R10: 0000000000000040 R11: ffffed0039fa323f R12: 1ffff10038fd3e32 [ 46.862048] R13: dffffc0000000000 R14: ffff8801c7e9f270 R15: 0000000000000000 [ 46.869319] ? mark_buffer_dirty+0x48b/0x5d0 [ 46.873715] ? __set_page_dirty_buffers+0x360/0x360 [ 46.878704] ? I_BDEV+0x20/0x20 [ 46.881972] ? __breadahead+0x150/0x150 [ 46.885946] ? check_noncircular+0x20/0x20 [ 46.890184] ? print_irqtrace_events+0x270/0x270 [ 46.894920] __block_commit_write.isra.33+0x13b/0x2f0 [ 46.900086] ? mark_buffer_dirty_inode+0x560/0x560 [ 46.904983] ? inode_dio_wait+0x530/0x530 [ 46.909108] ? I_BDEV+0xd/0x20 [ 46.912271] ? wait_for_stable_page+0x173/0x310 [ 46.916925] block_write_end+0x99/0x1c0 [ 46.920872] ? page_zero_new_buffers+0x550/0x550 [ 46.925598] ? memcpy_from_page+0x8e/0xf0 [ 46.929742] blkdev_write_end+0xc3/0x280 [ 46.933790] ? blkdev_bio_end_io+0x700/0x700 [ 46.938164] ? iov_iter_npages+0xcc0/0xcc0 [ 46.942374] ? is_bpf_text_address+0x7b/0x120 [ 46.946841] ? blkdev_write_begin+0x3c/0x50 [ 46.951129] ? blkdev_bio_end_io+0x700/0x700 [ 46.955511] generic_perform_write+0x3a4/0x600 [ 46.960084] ? filemap_fdatawait_keep_errors+0xb0/0xb0 [ 46.965341] ? generic_update_time+0x1b2/0x270 [ 46.969898] ? __mnt_drop_write_file+0xd/0x70 [ 46.974363] ? file_update_time+0xbf/0x470 [ 46.978570] ? current_time+0xc0/0xc0 [ 46.982356] __generic_file_write_iter+0x366/0x5b0 [ 46.987261] blkdev_write_iter+0x207/0x3e0 [ 46.991481] ? bd_set_size+0x330/0x330 [ 46.995351] ? find_held_lock+0x35/0x1d0 [ 46.999388] do_iter_readv_writev+0x525/0x7f0 [ 47.003852] ? do_iter_readv_writev+0x525/0x7f0 [ 47.008494] ? vfs_dedupe_file_range+0x8f0/0x8f0 [ 47.013226] ? rw_verify_area+0xe5/0x2b0 [ 47.017261] do_iter_write+0x154/0x540 [ 47.021135] ? rcu_read_lock_sched_held+0x108/0x120 [ 47.026141] vfs_iter_write+0x77/0xb0 [ 47.029918] iter_file_splice_write+0x7db/0xf30 [ 47.034570] ? page_cache_pipe_buf_steal+0x4f0/0x4f0 [ 47.039648] ? selinux_file_permission+0x82/0x460 [ 47.044469] ? rw_verify_area+0xe5/0x2b0 [ 47.048503] ? page_cache_pipe_buf_steal+0x4f0/0x4f0 [ 47.053578] direct_splice_actor+0x125/0x180 [ 47.057967] splice_direct_to_actor+0x2c1/0x820 [ 47.062609] ? generic_pipe_buf_nosteal+0x10/0x10 [ 47.067429] ? do_splice_to+0x160/0x160 [ 47.071383] ? security_file_permission+0x89/0x1e0 [ 47.076285] ? rw_verify_area+0xe5/0x2b0 [ 47.080319] do_splice_direct+0x29b/0x3c0 [ 47.084443] ? splice_direct_to_actor+0x820/0x820 [ 47.089261] ? rw_verify_area+0xe5/0x2b0 [ 47.093292] do_sendfile+0x5c9/0xe80 [ 47.096983] ? do_compat_pwritev64+0x100/0x100 [ 47.101538] ? __might_sleep+0x95/0x190 [ 47.105486] ? kasan_check_write+0x14/0x20 [ 47.109695] ? _copy_from_user+0x99/0x110 [ 47.113831] SyS_sendfile64+0xbd/0x160 [ 47.117689] ? SyS_sendfile+0x1a0/0x1a0 [ 47.121628] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.126613] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.131344] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 47.136065] RIP: 0033:0x452879 [ 47.139225] RSP: 002b:00007fe8e005dbe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000028 [ 47.146903] RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452879 [ 47.154140] RDX: 00000000200ddff8 RSI: 0000000000000003 RDI: 0000000000000000 [ 47.161465] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 47.168703] R10: 0000000100000001 R11: 0000000000000212 R12: 00000000006f4808 [ 47.175942] R13: 00000000ffffffff R14: 00007fe8e005e6d4 R15: 0000000000000000 [ 47.183903] Dumping ftrace buffer: [ 47.187478] (ftrace buffer empty) [ 47.191157] Kernel Offset: disabled [ 47.194754] Rebooting in 86400 seconds..