[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.111' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.588374] BTRFS: device label … devid 1912602624 transid 7 /dev/loop0 [ 35.614326] BTRFS error (device loop0): unsupported checksum algorithm 256 [ 35.615711] BTRFS warning (device ): duplicate device /dev/loop5 devid 1912602624 generation 7 scanned by syz-executor929 (8100) [ 35.624597] BTRFS error (device loop0): superblock checksum mismatch [ 35.666027] BTRFS warning (device ): duplicate device /dev/loop2 devid 1912602624 generation 7 scanned by syz-executor929 (8104) [ 35.686043] BTRFS warning (device ): duplicate device /dev/loop3 devid 1912602624 generation 7 scanned by syz-executor929 (8102) [ 35.710325] BTRFS warning (device ): duplicate device /dev/loop4 devid 1912602624 generation 7 scanned by syz-executor929 (8105) executing program executing program executing program [ 35.794511] BTRFS error (device loop0): open_ctree failed [ 35.811796] BTRFS error (device loop1): unsupported checksum algorithm 256 executing program [ 35.842155] BTRFS error (device loop1): superblock checksum mismatch executing program [ 35.924967] BTRFS error (device loop1): open_ctree failed [ 35.926996] BTRFS: device fsid f90cac8b-044b-4fa8-8bee-4b8d3da88dc2 devid 1 transid 7 /dev/loop3 [ 36.022286] BTRFS info (device loop4): disk space caching is enabled [ 36.029159] BTRFS info (device loop4): has skinny extents [ 36.044697] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 7 scanned by syz-executor929 (8093) executing program [ 36.070378] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 7 scanned by syz-executor929 (8106) [ 36.085856] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 7 scanned by syz-executor929 (8156) executing program executing program executing program executing program executing program [ 36.126068] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 7 scanned by systemd-udevd (8145) [ 36.154748] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 7 scanned by systemd-udevd (8128) executing program executing program executing program executing program executing program [ 36.210253] BTRFS error (device loop4): bad tree block start, want 5242880 have 0 [ 36.225261] BTRFS warning (device loop4): failed to read tree root executing program [ 36.254769] BTRFS error (device loop4): open_ctree failed [ 36.264064] BTRFS info (device loop4): disk space caching is enabled [ 36.270845] BTRFS info (device loop4): has skinny extents [ 36.344313] BTRFS error (device loop4): bad tree block start, want 5242880 have 0 [ 36.352226] BTRFS warning (device loop4): failed to read tree root [ 36.363305] BTRFS error (device loop4): open_ctree failed [ 36.372285] BTRFS info (device loop4): disk space caching is enabled [ 36.378940] BTRFS info (device loop4): has skinny extents executing program [ 36.401969] BTRFS error (device loop4): bad tree block start, want 5242880 have 0 [ 36.409689] BTRFS warning (device loop4): failed to read tree root [ 36.422256] BTRFS error (device loop4): open_ctree failed [ 36.431296] BTRFS info (device loop4): disk space caching is enabled [ 36.441334] BTRFS info (device loop4): has skinny extents executing program executing program executing program executing program [ 36.482907] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 7 scanned by syz-executor929 (8144) [ 36.514428] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 7 scanned by systemd-udevd (8132) executing program executing program executing program executing program executing program executing program [ 36.548899] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 7 scanned by syz-executor929 (8138) [ 36.573471] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 7 scanned by syz-executor929 (8203) [ 36.596860] BTRFS error (device loop4): bad tree block start, want 5242880 have 0 [ 36.605790] BTRFS warning (device loop4): failed to read tree root executing program executing program executing program executing program executing program executing program [ 36.653283] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 7 scanned by systemd-udevd (8142) [ 36.672396] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 7 scanned by systemd-udevd (8145) [ 36.722899] BTRFS error (device loop4): open_ctree failed [ 36.732738] BTRFS info (device loop0): disk space caching is enabled [ 36.741342] BTRFS info (device loop0): has skinny extents executing program executing program executing program [ 36.874962] BTRFS error (device loop0): bad tree block start, want 5242880 have 0 [ 36.883487] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by syz-executor929 (8308) [ 36.908415] BTRFS warning (device loop0): failed to read tree root executing program executing program [ 36.915053] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 7 scanned by syz-executor929 (8189) executing program executing program executing program executing program executing program [ 36.977627] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 7 scanned by syz-executor929 (8295) [ 36.997297] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by systemd-udevd (8117) executing program executing program [ 37.043800] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 7 scanned by systemd-udevd (8124) [ 37.064481] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 7 scanned by systemd-udevd (8132) [ 37.143122] BTRFS error (device loop0): open_ctree failed [ 37.149216] BTRFS: device label … devid 1912602624 transid 7 /dev/loop3 executing program executing program [ 37.244602] BTRFS error (device loop3): unsupported checksum algorithm 256 [ 37.253492] BTRFS error (device loop3): superblock checksum mismatch [ 37.261319] BTRFS warning (device ): duplicate device /dev/loop5 devid 1912602624 generation 7 scanned by syz-executor929 (8381) executing program executing program [ 37.311065] BTRFS warning (device ): duplicate device /dev/loop0 devid 1912602624 generation 7 scanned by syz-executor929 (8380) [ 37.325066] BTRFS error (device loop3): open_ctree failed [ 37.350215] BTRFS error (device loop3): unsupported checksum algorithm 256 executing program [ 37.369110] BTRFS error (device loop3): superblock checksum mismatch [ 37.381087] BTRFS error (device loop3): open_ctree failed [ 37.389580] BTRFS error (device loop3): unsupported checksum algorithm 256 [ 37.397084] BTRFS error (device loop3): superblock checksum mismatch [ 37.404586] BTRFS error (device loop3): open_ctree failed executing program [ 37.413894] BTRFS error (device loop3): unsupported checksum algorithm 256 [ 37.424304] BTRFS error (device loop3): superblock checksum mismatch executing program executing program executing program [ 37.538661] BTRFS error (device loop3): open_ctree failed executing program executing program [ 37.588102] BTRFS warning (device ): duplicate device /dev/loop5 devid 1912602624 generation 7 scanned by syz-executor929 (8401) [ 37.602084] BTRFS error (device loop0): unsupported checksum algorithm 256 [ 37.611825] BTRFS error (device loop0): superblock checksum mismatch [ 37.623546] BTRFS warning (device ): duplicate device /dev/loop2 devid 1912602624 generation 7 scanned by syz-executor929 (8405) [ 37.694542] BTRFS warning (device ): duplicate device /dev/loop4 devid 1912602624 generation 7 scanned by syz-executor929 (8413) executing program [ 37.751567] BTRFS warning (device ): duplicate device /dev/loop3 devid 1912602624 generation 7 scanned by syz-executor929 (8416) [ 37.768096] BTRFS error (device loop0): open_ctree failed [ 37.786342] BTRFS error (device loop1): unsupported checksum algorithm 256 [ 37.798494] BTRFS error (device loop1): superblock checksum mismatch [ 37.808843] BTRFS error (device loop1): open_ctree failed [ 37.818084] BTRFS error (device loop1): unsupported checksum algorithm 256 [ 37.827639] BTRFS error (device loop1): superblock checksum mismatch [ 37.835760] BTRFS error (device loop1): open_ctree failed [ 37.849415] BTRFS error (device loop1): unsupported checksum algorithm 256 [ 37.858371] BTRFS error (device loop1): superblock checksum mismatch executing program executing program executing program executing program [ 37.966007] BTRFS error (device loop1): open_ctree failed [ 37.980782] BTRFS warning (device ): duplicate device /dev/loop4 devid 1912602624 generation 7 scanned by syz-executor929 (8438) [ 37.994045] BTRFS error (device loop1): unsupported checksum algorithm 256 [ 38.002091] BTRFS error (device loop1): superblock checksum mismatch executing program executing program executing program executing program executing program [ 38.028588] BTRFS error (device loop1): open_ctree failed [ 38.037173] BTRFS warning (device ): duplicate device /dev/loop5 devid 1912602624 generation 7 scanned by syz-executor929 (8455) executing program [ 38.078712] BTRFS error (device loop1): unsupported checksum algorithm 256 [ 38.097126] BTRFS error (device loop1): superblock checksum mismatch [ 38.123426] BTRFS warning (device ): duplicate device /dev/loop2 devid 1912602624 generation 7 scanned by syz-executor929 (8465) executing program [ 38.233377] BTRFS error (device loop1): open_ctree failed executing program executing program executing program executing program [ 38.289593] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 7 scanned by systemd-udevd (8145) [ 38.304485] BTRFS info (device loop5): disk space caching is enabled [ 38.313424] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by syz-executor929 (8471) [ 38.329527] BTRFS info (device loop5): has skinny extents executing program executing program [ 38.359481] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 7 scanned by syz-executor929 (8465) [ 38.380521] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 7 scanned by systemd-udevd (8124) [ 38.394061] BTRFS error (device loop5): super_num_devices 1 mismatch with num_devices 1 found here executing program executing program executing program executing program [ 38.406715] BTRFS error (device loop5): failed to read chunk tree: -22 [ 38.427400] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by systemd-udevd (8142) [ 38.442594] BTRFS error (device loop5): open_ctree failed [ 38.452090] BTRFS info (device loop5): disk space caching is enabled [ 38.465370] BTRFS info (device loop5): has skinny extents [ 38.481339] BTRFS error (device loop5): super_num_devices 1 mismatch with num_devices 1 found here [ 38.491068] BTRFS error (device loop5): failed to read chunk tree: -22 [ 38.502695] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by syz-executor929 (8535) executing program executing program executing program [ 38.525285] BTRFS error (device loop5): open_ctree failed [ 38.546410] BTRFS warning (device ): duplicate device /dev/loop4 devid 1 generation 7 scanned by systemd-udevd (8142) [ 38.563879] BTRFS info (device loop5): disk space caching is enabled [ 38.577154] BTRFS info (device loop5): has skinny extents executing program executing program [ 38.641924] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 7 scanned by syz-executor929 (8497) [ 38.654176] BTRFS error (device loop5): super_num_devices 1 mismatch with num_devices 1 found here [ 38.668075] BTRFS error (device loop5): failed to read chunk tree: -22 [ 38.680399] BTRFS error (device loop5): open_ctree failed executing program executing program executing program [ 38.688884] BTRFS info (device loop5): disk space caching is enabled [ 38.696016] BTRFS info (device loop5): has skinny extents executing program executing program executing program executing program [ 38.741739] BTRFS error (device loop5): bad tree block start, want 5242880 have 0 [ 38.749728] BTRFS warning (device loop5): failed to read tree root executing program [ 38.781865] BTRFS warning (device ): duplicate device /dev/loop1 devid 1 generation 7 scanned by syz-executor929 (8492) [ 38.840540] BTRFS error (device loop5): open_ctree failed [ 38.848602] BTRFS info (device loop5): disk space caching is enabled [ 38.855497] BTRFS info (device loop5): has skinny extents [ 38.870711] BTRFS error (device loop5): bad tree block start, want 5242880 have 0 [ 38.882905] BTRFS warning (device loop5): failed to read tree root executing program executing program [ 38.893302] BTRFS error (device loop5): open_ctree failed [ 38.901401] BTRFS info (device loop5): disk space caching is enabled [ 38.908521] BTRFS info (device loop5): has skinny extents executing program executing program executing program [ 38.972708] BTRFS error (device loop5): bad tree block start, want 5242880 have 0 [ 38.981934] BTRFS warning (device ): duplicate device /dev/loop0 devid 1 generation 7 scanned by syz-executor929 (8599) [ 38.995834] BTRFS warning (device ): duplicate device /dev/loop2 devid 1 generation 7 scanned by syz-executor929 (8529) [ 38.998414] BTRFS warning (device loop5): failed to read tree root executing program executing program executing program [ 39.075285] BTRFS warning (device ): duplicate device /dev/loop3 devid 1 generation 7 scanned by syz-executor929 (8491) [ 39.108429] BTRFS error (device loop5): open_ctree failed executing program executing program executing program executing program [ 39.126258] BTRFS: device label … devid 1912602624 transid 7 /dev/loop1 executing program executing program executing program executing program [ 39.171922] BTRFS warning (device ): duplicate device /dev/loop5 devid 1 generation 7 scanned by systemd-udevd (8432) [ 39.191035] BTRFS info (device loop3): disk space caching is enabled [ 39.199591] BTRFS info (device loop3): has skinny extents executing program executing program [ 39.264967] BTRFS warning (device ): duplicate device /dev/loop2 devid 1912602624 generation 7 scanned by syz-executor929 (8700) executing program [ 39.323313] BTRFS warning (device ): duplicate device /dev/loop0 devid 1912602624 generation 7 scanned by syz-executor929 (8704) [ 39.350533] BTRFS error (device loop3): bad tree block start, want 5242880 have 0 [ 39.358538] BTRFS warning (device loop3): failed to read tree root [ 39.450831] ------------[ cut here ]------------ [ 39.465561] WARNING: CPU: 0 PID: 8691 at fs/btrfs/volumes.c:1080 close_fs_devices.part.0.cold+0x11/0x30 [ 39.475105] Kernel panic - not syncing: panic_on_warn set ... [ 39.475105] [ 39.482469] CPU: 0 PID: 8691 Comm: syz-executor929 Not tainted 4.19.160-syzkaller #0 [ 39.490370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.499721] Call Trace: [ 39.502300] dump_stack+0x1fc/0x2fe [ 39.505917] panic+0x26a/0x50e [ 39.509115] ? __warn_printk+0xf3/0xf3 [ 39.513009] ? close_fs_devices.part.0.cold+0x11/0x30 [ 39.518207] ? __probe_kernel_read+0x130/0x1b0 [ 39.522783] ? __warn.cold+0x5/0x61 [ 39.526401] ? __warn+0xe4/0x200 [ 39.529781] ? close_fs_devices.part.0.cold+0x11/0x30 [ 39.534972] __warn.cold+0x20/0x61 [ 39.538524] ? close_fs_devices.part.0.cold+0x11/0x30 [ 39.543711] report_bug+0x262/0x2b0 [ 39.547325] do_error_trap+0x1d7/0x310 [ 39.551199] ? math_error+0x310/0x310 [ 39.554992] ? __irq_work_queue_local+0x101/0x160 [ 39.559837] ? irq_work_queue+0x29/0x80 [ 39.563834] ? error_entry+0x72/0xd0 [ 39.567556] ? trace_hardirqs_off_caller+0x6e/0x210 [ 39.572573] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.577415] invalid_op+0x14/0x20 [ 39.580870] RIP: 0010:close_fs_devices.part.0.cold+0x11/0x30 [ 39.586660] Code: c7 c7 a0 f3 a4 88 e8 aa b2 56 fe 0f 0b 49 c7 c4 ea ff ff ff e9 d7 06 ff ff e8 08 b9 6b fe 48 c7 c7 a0 f3 a4 88 e8 8b b2 56 fe <0f> 0b e9 b4 0e ff ff e8 f0 b8 6b fe 48 c7 c7 a0 f3 a4 88 e8 73 b2 [ 39.605570] RSP: 0018:ffff8880a2cb7600 EFLAGS: 00010282 [ 39.610946] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 39.618237] RDX: 0000000000000000 RSI: ffffffff814fdb91 RDI: ffffed1014596eb2 [ 39.625519] RBP: ffff8880b333fd40 R08: 0000000000000024 R09: 0000000000000000 [ 39.632772] R10: 0000000000000005 R11: 0000000000000000 R12: dffffc0000000000 [ 39.640042] R13: ffff8880aac93700 R14: ffff888091fb1b60 R15: ffff88809ff2d200 [ 39.647450] ? vprintk_func+0x81/0x17e [ 39.651385] btrfs_close_devices+0x95/0x1f0 [ 39.655715] open_ctree+0x26b/0x61e0 [ 39.659443] ? close_ctree+0x850/0x850 [ 39.663327] ? retint_kernel+0x2d/0x2d [ 39.667228] ? btrfs_mount_root+0x12c8/0x1830 [ 39.671723] btrfs_mount_root+0x12e5/0x1830 [ 39.676053] ? btrfs_decode_error+0x70/0x70 [ 39.680387] ? __mutex_unlock_slowpath+0xea/0x610 [ 39.685243] ? check_preemption_disabled+0x41/0x280 [ 39.690249] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 39.695347] ? pcpu_alloc+0xc9/0x1190 [ 39.699147] ? __lockdep_init_map+0x100/0x5a0 [ 39.703643] mount_fs+0xa3/0x30c [ 39.707041] vfs_kern_mount.part.0+0x68/0x470 [ 39.711521] ? kfree+0x110/0x210 [ 39.714887] vfs_kern_mount+0x3c/0x60 [ 39.718675] btrfs_mount+0x23a/0xa93 [ 39.722388] ? btrfs_show_options+0xfd0/0xfd0 [ 39.726867] ? __mutex_unlock_slowpath+0xea/0x610 [ 39.731706] ? check_preemption_disabled+0x41/0x280 [ 39.736813] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 39.741820] ? pcpu_alloc+0xc9/0x1190 [ 39.745618] ? __lockdep_init_map+0x100/0x5a0 [ 39.750110] mount_fs+0xa3/0x30c [ 39.753464] vfs_kern_mount.part.0+0x68/0x470 [ 39.757948] do_mount+0x113c/0x2f10 [ 39.761561] ? do_raw_spin_unlock+0x171/0x230 [ 39.766038] ? check_preemption_disabled+0x41/0x280 [ 39.771045] ? copy_mount_string+0x40/0x40 [ 39.775289] ? copy_mount_options+0x59/0x380 [ 39.779697] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 39.785415] ? kmem_cache_alloc_trace+0x323/0x380 [ 39.790261] ? copy_mount_options+0x26f/0x380 [ 39.794742] ksys_mount+0xcf/0x130 [ 39.798268] __x64_sys_mount+0xba/0x150 [ 39.802246] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 39.806850] do_syscall_64+0xf9/0x620 [ 39.810646] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.815827] RIP: 0033:0x44863a [ 39.819019] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd a2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 aa a2 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 39.837919] RSP: 002b:00007ffd8f719b08 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 39.845624] RAX: ffffffffffffffda RBX: 00007ffd8f719b80 RCX: 000000000044863a [ 39.852884] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd8f719b40 [ 39.860160] RBP: 0000000000000004 R08: 00007ffd8f719b80 R09: 0000000000000000 [ 39.867421] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 [ 39.874683] R13: 00007ffd8f719b40 R14: 0000000000000003 R15: 0000000000000001 [ 39.882764] Kernel Offset: disabled [ 39.886426] Rebooting in 86400 seconds..