[ 35.701388] audit: type=1800 audit(1551578657.563:30): pid=7444 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. 2019/03/03 02:04:30 parsed 1 programs 2019/03/03 02:04:33 executed programs: 0 syzkaller login: [ 51.269351] IPVS: ftp: loaded support on port[0] = 21 [ 51.321269] chnl_net:caif_netlink_parms(): no params data found [ 51.350970] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.358165] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.365131] device bridge_slave_0 entered promiscuous mode [ 51.372096] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.378585] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.385405] device bridge_slave_1 entered promiscuous mode [ 51.400149] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.409039] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.423973] team0: Port device team_slave_0 added [ 51.430524] team0: Port device team_slave_1 added [ 51.487407] device hsr_slave_0 entered promiscuous mode [ 51.545607] device hsr_slave_1 entered promiscuous mode [ 51.601561] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.607961] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.614639] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.621016] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.648211] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.657827] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.678273] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.685341] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.692417] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.703116] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.712142] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.719913] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.726328] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.734968] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.743234] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.749626] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.766735] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.774491] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.782193] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.790951] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.800668] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.809826] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.824815] 8021q: adding VLAN 0 to HW filter on device batadv0 2019/03/03 02:04:38 executed programs: 48 2019/03/03 02:04:43 executed programs: 107 [ 61.827428] ------------[ cut here ]------------ [ 61.832347] generic_make_request: Trying to write to read-only block-device loop0 (partno 0) [ 61.841399] WARNING: CPU: 1 PID: 8298 at block/blk-core.c:802 generic_make_request_checks+0x1c8a/0x2140 [ 61.850977] Kernel panic - not syncing: panic_on_warn set ... [ 61.856850] CPU: 1 PID: 8298 Comm: syz-executor.0 Not tainted 5.0.0-rc8+ #2 [ 61.863932] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.873260] Call Trace: [ 61.875887] dump_stack+0x172/0x1f0 [ 61.879505] ? generic_make_request_checks+0x1bb0/0x2140 [ 61.884966] panic+0x2cb/0x65c [ 61.888140] ? __warn_printk+0xf3/0xf3 [ 61.892008] ? generic_make_request_checks+0x1c8a/0x2140 [ 61.897436] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.902965] ? __warn.cold+0x5/0x45 [ 61.906573] ? __warn+0xe8/0x1d0 [ 61.909929] ? generic_make_request_checks+0x1c8a/0x2140 [ 61.915359] __warn.cold+0x20/0x45 [ 61.918880] ? vprintk_emit+0x1ce/0x6d0 [ 61.922845] ? generic_make_request_checks+0x1c8a/0x2140 [ 61.928277] report_bug+0x263/0x2b0 [ 61.931888] do_error_trap+0x11b/0x200 [ 61.935755] do_invalid_op+0x37/0x50 [ 61.939504] ? generic_make_request_checks+0x1c8a/0x2140 [ 61.944944] invalid_op+0x14/0x20 [ 61.948378] RIP: 0010:generic_make_request_checks+0x1c8a/0x2140 [ 61.954413] Code: 00 00 44 8b ab dc 04 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 98 7c 05 00 48 c7 c7 80 a3 a0 87 48 89 c6 44 89 ea e8 c4 be 2b fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 [ 61.973298] RSP: 0018:ffff8880943d6f70 EFLAGS: 00010286 [ 61.978669] RAX: 0000000000000000 RBX: ffff8880a3c851c0 RCX: 0000000000000000 [ 61.985921] RDX: 0000000000000000 RSI: ffffffff815a9066 RDI: ffffed101287ade0 [ 61.993166] RBP: ffff8880943d7070 R08: ffff88808b6a65c0 R09: ffffed1015d25021 [ 62.000518] R10: ffffed1015d25020 R11: ffff8880ae928107 R12: ffff88809f10f708 [ 62.007829] R13: 0000000000000000 R14: 0000000000000001 R15: ffff88809f10f700 [ 62.015103] ? vprintk_func+0x86/0x189 [ 62.018979] ? trace_event_raw_event_block_rq_requeue+0x640/0x640 [ 62.025240] ? mark_held_locks+0x100/0x100 [ 62.029461] generic_make_request+0x24c/0x12d0 [ 62.034024] ? find_held_lock+0x35/0x130 [ 62.038066] ? bio_associate_blkg_from_css+0x513/0x9d0 [ 62.043317] ? blk_queue_enter+0xe90/0xe90 [ 62.047532] ? lock_downgrade+0x810/0x810 [ 62.051665] submit_bio+0xba/0x480 [ 62.055183] ? submit_bio+0xba/0x480 [ 62.058900] ? generic_make_request+0x12d0/0x12d0 [ 62.063718] ? bio_reset+0x3b0/0x3b0 [ 62.067536] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 62.072631] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 62.078168] ? wbc_account_io+0x17e/0x2a0 [ 62.082302] submit_bh_wbc+0x5f7/0x7f0 [ 62.086172] __block_write_full_page+0x771/0x1020 [ 62.090993] ? check_disk_change+0x140/0x140 [ 62.095382] block_write_full_page+0x21f/0x270 [ 62.099947] ? check_disk_change+0x140/0x140 [ 62.104336] blkdev_writepage+0x25/0x30 [ 62.108295] __writepage+0x67/0xe0 [ 62.111813] write_cache_pages+0x8af/0x1560 [ 62.116122] ? __lock_acquire+0x53b/0x4700 [ 62.120345] ? __wb_update_bandwidth+0x670/0x670 [ 62.125084] ? clear_page_dirty_for_io+0xff0/0xff0 [ 62.129991] ? __lock_acquire+0x53b/0x4700 [ 62.134203] ? __lock_acquire+0x53b/0x4700 [ 62.138415] ? __lock_acquire+0x53b/0x4700 [ 62.142644] generic_writepages+0xed/0x160 [ 62.146854] ? write_cache_pages+0x1560/0x1560 [ 62.151411] ? mark_held_locks+0x100/0x100 [ 62.155622] ? 0xffffffff81000000 [ 62.159058] ? find_held_lock+0x35/0x130 [ 62.163100] ? wbc_attach_and_unlock_inode+0x51a/0x930 [ 62.168358] ? find_held_lock+0x35/0x130 [ 62.172395] ? blkdev_readpages+0x40/0x40 [ 62.176525] blkdev_writepages+0x1e/0x30 [ 62.180579] do_writepages+0xfc/0x2a0 [ 62.184363] ? page_writeback_cpu_online+0x20/0x20 [ 62.189274] ? kasan_check_read+0x11/0x20 [ 62.193401] ? do_raw_spin_unlock+0x57/0x270 [ 62.197788] ? _raw_spin_unlock+0x2d/0x50 [ 62.201926] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 62.207445] ? wbc_attach_and_unlock_inode+0x5c4/0x930 [ 62.212708] __filemap_fdatawrite_range+0x26d/0x340 [ 62.217705] ? delete_from_page_cache_batch+0x10e0/0x10e0 [ 62.223231] ? __lock_acquire+0x53b/0x4700 [ 62.227497] filemap_write_and_wait+0x47/0xd0 [ 62.231996] __blkdev_put+0x204/0x810 [ 62.235780] ? bd_set_size+0xb0/0xb0 [ 62.239475] ? wait_for_completion+0x440/0x440 [ 62.244049] ? kasan_check_read+0x11/0x20 [ 62.248190] blkdev_put+0x98/0x560 [ 62.251713] ? blkdev_put+0x560/0x560 [ 62.255490] blkdev_close+0x8b/0xb0 [ 62.259106] __fput+0x2df/0x8d0 [ 62.262372] ____fput+0x16/0x20 [ 62.265630] task_work_run+0x14a/0x1c0 [ 62.269500] do_exit+0x92c/0x2fd0 [ 62.272936] ? get_signal+0x331/0x1d50 [ 62.276804] ? mm_update_next_owner+0x660/0x660 [ 62.281466] ? kasan_check_read+0x11/0x20 [ 62.285608] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.290282] ? get_signal+0x331/0x1d50 [ 62.294153] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.298642] do_group_exit+0x135/0x370 [ 62.302580] get_signal+0x399/0x1d50 [ 62.306290] do_signal+0x87/0x1940 [ 62.309810] ? kasan_check_read+0x11/0x20 [ 62.314046] ? _copy_to_user+0xc9/0x120 [ 62.318053] ? setup_sigcontext+0x7d0/0x7d0 [ 62.322368] ? exit_to_usermode_loop+0x43/0x2c0 [ 62.327068] ? do_fast_syscall_32+0xa9d/0xc98 [ 62.331558] ? exit_to_usermode_loop+0x43/0x2c0 [ 62.336211] ? lockdep_hardirqs_on+0x415/0x5d0 [ 62.340777] ? trace_hardirqs_on+0x67/0x230 [ 62.345081] exit_to_usermode_loop+0x244/0x2c0 [ 62.349644] do_fast_syscall_32+0xa9d/0xc98 [ 62.353950] entry_SYSENTER_compat+0x70/0x7f [ 62.358333] RIP: 0023:0xf7f5e869 [ 62.361675] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 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 [ 62.380559] RSP: 002b:00000000f7f3912c EFLAGS: 00000292 ORIG_RAX: 00000000000000f0 [ 62.388245] RAX: fffffffffffffe00 RBX: 000000000814afd4 RCX: 0000000000000080 [ 62.395520] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000814afd8 [ 62.402771] RBP: 00000000f7f39228 R08: 0000000000000000 R09: 0000000000000000 [ 62.410016] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 62.417264] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 62.425634] Kernel Offset: disabled [ 62.429304] Rebooting in 86400 seconds..