[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.889837][ T26] audit: type=1800 audit(1574962347.518:25): pid=9033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.910268][ T26] audit: type=1800 audit(1574962347.518:26): pid=9033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.961228][ T26] audit: type=1800 audit(1574962347.518:27): pid=9033 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.0.196' (ECDSA) to the list of known hosts. 2019/11/28 17:32:38 parsed 1 programs 2019/11/28 17:32:40 executed programs: 0 syzkaller login: [ 75.448995][ T9201] IPVS: ftp: loaded support on port[0] = 21 [ 75.521041][ T9201] chnl_net:caif_netlink_parms(): no params data found [ 75.553114][ T9201] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.562514][ T9201] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.572153][ T9201] device bridge_slave_0 entered promiscuous mode [ 75.581561][ T9201] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.590366][ T9201] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.599174][ T9201] device bridge_slave_1 entered promiscuous mode [ 75.618861][ T9201] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.632865][ T9201] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.654247][ T9201] team0: Port device team_slave_0 added [ 75.662045][ T9201] team0: Port device team_slave_1 added [ 75.717893][ T9201] device hsr_slave_0 entered promiscuous mode [ 75.785506][ T9201] device hsr_slave_1 entered promiscuous mode [ 75.860385][ T9201] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.927528][ T9201] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.978067][ T9201] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.038188][ T9201] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.096226][ T9201] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.104236][ T9201] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.112365][ T9201] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.120271][ T9201] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.160916][ T9201] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.177841][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.200100][ T2924] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.221245][ T2924] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.230171][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.245047][ T9201] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.257511][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.267293][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.274674][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.298389][ T9203] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.308517][ T9203] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.316635][ T9203] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.327527][ T9203] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.336679][ T9203] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.348035][ T9206] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.365028][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.380184][ T9201] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 76.394171][ T9201] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.407362][ T9206] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.429660][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.438609][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.452499][ T9201] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.545218][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 76.545233][ T26] audit: type=1804 audit(1574962361.168:31): pid=9207 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir249103758/syzkaller.ZqsZFp/0/file0" dev="sda1" ino=16501 res=1 [ 76.678471][ T26] audit: type=1804 audit(1574962361.308:32): pid=9211 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir249103758/syzkaller.ZqsZFp/1/file0" dev="sda1" ino=16501 res=1 [ 76.706935][ T9211] ------------[ cut here ]------------ [ 76.713125][ T9211] generic_make_request: Trying to write to read-only block-device loop0 (partno 0) [ 76.723809][ T9211] WARNING: CPU: 1 PID: 9211 at block/blk-core.c:800 generic_make_request_checks+0x1c78/0x2190 [ 76.734858][ T9211] Kernel panic - not syncing: panic_on_warn set ... [ 76.741639][ T9211] CPU: 1 PID: 9211 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 76.750068][ T9211] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.760819][ T9211] Call Trace: [ 76.764246][ T9211] dump_stack+0x197/0x210 [ 76.769411][ T9211] ? generic_make_request_checks+0x1c60/0x2190 [ 76.775897][ T9211] panic+0x2e3/0x75c [ 76.779906][ T9211] ? add_taint.cold+0x16/0x16 [ 76.784699][ T9211] ? __kasan_check_write+0x14/0x20 [ 76.789921][ T9211] ? __warn.cold+0x14/0x3e [ 76.794425][ T9211] ? __warn+0xd9/0x1cf [ 76.798492][ T9211] ? generic_make_request_checks+0x1c78/0x2190 [ 76.804835][ T9211] __warn.cold+0x2f/0x3e [ 76.809151][ T9211] ? generic_make_request_checks+0x1c78/0x2190 [ 76.815422][ T9211] report_bug+0x289/0x300 [ 76.819876][ T9211] do_error_trap+0x11b/0x200 [ 76.824559][ T9211] do_invalid_op+0x37/0x50 [ 76.829348][ T9211] ? generic_make_request_checks+0x1c78/0x2190 [ 76.835984][ T9211] invalid_op+0x23/0x30 [ 76.840562][ T9211] RIP: 0010:generic_make_request_checks+0x1c78/0x2190 [ 76.847979][ T9211] Code: 00 00 44 8b ab 5c 05 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 5a 94 05 00 48 c7 c7 c0 47 05 88 48 89 c6 44 89 ea e8 a7 e4 0e fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 [ 76.867801][ T9211] RSP: 0018:ffff888097e8f300 EFLAGS: 00010282 [ 76.874209][ T9211] RAX: 0000000000000000 RBX: ffff8880a3b62000 RCX: 0000000000000000 [ 76.882807][ T9211] RDX: 0000000000000000 RSI: ffffffff815dc196 RDI: ffffed1012fd1e52 [ 76.890864][ T9211] RBP: ffff888097e8f400 R08: ffff8880a1908040 R09: fffffbfff1532e1e [ 76.899109][ T9211] R10: fffffbfff1532e1d R11: ffffffff8a9970ef R12: ffff888092bab108 [ 76.907666][ T9211] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888092bab100 [ 76.916102][ T9211] ? vprintk_func+0x86/0x189 [ 76.921105][ T9211] ? trace_event_raw_event_block_rq_requeue+0x640/0x640 [ 76.928253][ T9211] ? __kasan_check_read+0x11/0x20 [ 76.933562][ T9211] ? __lock_acquire+0x8a0/0x4a00 [ 76.938951][ T9211] ? __kasan_check_read+0x11/0x20 [ 76.944198][ T9211] generic_make_request+0x8f/0xb50 [ 76.949696][ T9211] ? blk_queue_enter+0xe30/0xe30 [ 76.955139][ T9211] ? lock_downgrade+0x920/0x920 [ 76.960317][ T9211] submit_bio+0x113/0x600 [ 76.964654][ T9211] ? submit_bio+0x113/0x600 [ 76.969800][ T9211] ? generic_make_request+0xb50/0xb50 [ 76.975328][ T9211] ? bio_associate_blkg_from_css+0x4fd/0x980 [ 76.981616][ T9211] ? bio_reset+0x3a0/0x3a0 [ 76.986306][ T9211] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 76.992041][ T9211] ? guard_bio_eod+0x28f/0x6c0 [ 76.997052][ T9211] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 77.003223][ T9211] submit_bh_wbc+0x6b6/0x900 [ 77.008177][ T9211] __block_write_full_page+0x7fe/0x11b0 [ 77.013848][ T9211] ? bdev_evict_inode+0x5c0/0x5c0 [ 77.019331][ T9211] ? __getblk_gfp+0xa10/0xa10 [ 77.024034][ T9211] block_write_full_page+0x21f/0x270 [ 77.029418][ T9211] ? bdev_evict_inode+0x5c0/0x5c0 [ 77.034532][ T9211] blkdev_writepage+0x25/0x30 [ 77.039504][ T9211] __writepage+0x66/0x110 [ 77.043958][ T9211] write_cache_pages+0x80c/0x13f0 [ 77.049257][ T9211] ? __kasan_check_read+0x11/0x20 [ 77.055072][ T9211] ? tag_pages_for_writeback+0x4b0/0x4b0 [ 77.060837][ T9211] ? clear_page_dirty_for_io+0xde0/0xde0 [ 77.066619][ T9211] ? rwsem_down_write_slowpath+0xbdf/0xf80 [ 77.072633][ T9211] ? __kasan_check_read+0x11/0x20 [ 77.078115][ T9211] ? mark_lock+0xc2/0x1220 [ 77.082703][ T9211] generic_writepages+0xed/0x160 [ 77.087982][ T9211] ? write_cache_pages+0x13f0/0x13f0 [ 77.094159][ T9211] ? __lock_acquire+0x8a0/0x4a00 [ 77.099209][ T9211] ? wbc_attach_and_unlock_inode+0x515/0xa00 [ 77.105348][ T9211] ? find_held_lock+0x35/0x130 [ 77.110225][ T9211] ? blkdev_readpages+0x40/0x40 [ 77.115073][ T9211] blkdev_writepages+0x1e/0x30 [ 77.120100][ T9211] do_writepages+0xfa/0x2a0 [ 77.124650][ T9211] ? page_writeback_cpu_online+0x20/0x20 [ 77.130300][ T9211] ? do_raw_spin_unlock+0x178/0x270 [ 77.135591][ T9211] ? _raw_spin_unlock+0x28/0x40 [ 77.141178][ T9211] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 77.147698][ T9211] ? wbc_attach_and_unlock_inode+0x637/0xa00 [ 77.154176][ T9211] __filemap_fdatawrite_range+0x2bc/0x3b0 [ 77.160392][ T9211] ? delete_from_page_cache_batch+0xfe0/0xfe0 [ 77.166675][ T9211] ? lock_downgrade+0x920/0x920 [ 77.171617][ T9211] filemap_write_and_wait+0xf8/0x1e0 [ 77.177012][ T9211] __blkdev_put+0x204/0x810 [ 77.181847][ T9211] ? bd_set_size+0xb0/0xb0 [ 77.186251][ T9211] ? wait_for_completion+0x440/0x440 [ 77.194231][ T9211] blkdev_put+0x98/0x560 [ 77.198555][ T9211] blkdev_close+0x8b/0xb0 [ 77.203121][ T9211] __fput+0x2ff/0x890 [ 77.207484][ T9211] ? blkdev_put+0x560/0x560 [ 77.212068][ T9211] ____fput+0x16/0x20 [ 77.216051][ T9211] task_work_run+0x145/0x1c0 [ 77.220754][ T9211] exit_to_usermode_loop+0x316/0x380 [ 77.226136][ T9211] do_fast_syscall_32+0xbbd/0xe16 [ 77.231182][ T9211] entry_SYSENTER_compat+0x70/0x7f [ 77.236302][ T9211] RIP: 0023:0xf7f4ea39 [ 77.240463][ T9211] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 77.261341][ T9211] RSP: 002b:00000000ff9e6c4c EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 77.270397][ T9211] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000008170620 [ 77.279495][ T9211] RDX: 0000000000000005 RSI: 00000000ffffffff RDI: 0000000000000000 [ 77.287917][ T9211] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 77.296071][ T9211] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 77.304189][ T9211] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 77.314449][ T9211] Kernel Offset: disabled [ 77.318906][ T9211] Rebooting in 86400 seconds..