[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 71.576666][ T26] kauditd_printk_skb: 8 callbacks suppressed [ 71.576680][ T26] audit: type=1400 audit(1574821362.010:41): avc: denied { map } for pid=9255 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts. executing program [ 91.688183][ T26] audit: type=1400 audit(1574821382.120:42): avc: denied { map } for pid=9267 comm="syz-executor572" path="/root/syz-executor572765981" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 91.694311][ T9267] [EXFAT] trying to mount... [ 91.720067][ T9267] ------------[ cut here ]------------ [ 91.725729][ T9267] [EXFAT] No bh, device seems wrong or to be ejected. [ 91.732779][ T9267] WARNING: CPU: 1 PID: 9267 at drivers/staging/exfat/exfat_blkdev.c:62 bdev_read+0x258/0x2b0 [ 91.742920][ T9267] Kernel panic - not syncing: panic_on_warn set ... [ 91.749487][ T9267] CPU: 1 PID: 9267 Comm: syz-executor572 Not tainted 5.4.0-syzkaller #0 [ 91.757800][ T9267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.767838][ T9267] Call Trace: [ 91.771113][ T9267] dump_stack+0x197/0x210 [ 91.775490][ T9267] ? bdev_read+0x1d0/0x2b0 [ 91.779901][ T9267] panic+0x2e3/0x75c [ 91.783807][ T9267] ? add_taint.cold+0x16/0x16 [ 91.788478][ T9267] ? __kasan_check_write+0x14/0x20 [ 91.793570][ T9267] ? __warn.cold+0x14/0x35 [ 91.797986][ T9267] ? __warn+0xd9/0x1d0 [ 91.802042][ T9267] ? bdev_read+0x258/0x2b0 [ 91.806439][ T9267] __warn.cold+0x2f/0x35 [ 91.810671][ T9267] ? bdev_read+0x258/0x2b0 [ 91.815078][ T9267] report_bug+0x289/0x300 [ 91.819386][ T9267] do_error_trap+0x11b/0x200 [ 91.823953][ T9267] do_invalid_op+0x37/0x50 [ 91.828355][ T9267] ? bdev_read+0x258/0x2b0 [ 91.832750][ T9267] invalid_op+0x23/0x30 [ 91.836885][ T9267] RIP: 0010:bdev_read+0x258/0x2b0 [ 91.841887][ T9267] Code: ff df 80 3c 02 00 0f 84 51 ff ff ff 4c 89 e7 e8 ae 33 38 fc e9 44 ff ff ff e8 04 f5 fb fb 48 c7 c7 20 bc 3d 88 e8 40 27 cd fb <0f> 0b eb 8a e8 8f 32 38 fc e9 17 fe ff ff e8 c5 32 38 fc e9 99 fe [ 91.861505][ T9267] RSP: 0018:ffff88809382fad0 EFLAGS: 00010282 [ 91.867561][ T9267] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 91.875523][ T9267] RDX: 0000000000000000 RSI: ffffffff815db046 RDI: ffffed1012705f4c [ 91.883480][ T9267] RBP: ffff88809382fb10 R08: ffff888093760340 R09: ffffed1015d241b9 [ 91.891447][ T9267] R10: ffffed1015d241b8 R11: ffff8880ae920dc7 R12: 0000000000000000 [ 91.899409][ T9267] R13: ffff8880834c0000 R14: 0000000000000001 R15: 0000000000000200 [ 91.907389][ T9267] ? vprintk_func+0x86/0x189 [ 91.911972][ T9267] sector_read+0x156/0x1e0 [ 91.916369][ T9267] exfat_fill_super.cold+0x4d6/0xdba [ 91.921633][ T9267] ? exfat_read_root+0x8d0/0x8d0 [ 91.926561][ T9267] ? vsprintf+0x40/0x40 [ 91.930722][ T9267] ? wait_for_completion+0x440/0x440 [ 91.935997][ T9267] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 91.941699][ T9267] ? set_blocksize+0x2bf/0x340 [ 91.946440][ T9267] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.952656][ T9267] mount_bdev+0x304/0x3c0 [ 91.956963][ T9267] ? exfat_read_root+0x8d0/0x8d0 [ 91.961876][ T9267] exfat_fs_mount+0x35/0x40 [ 91.966413][ T9267] ? exfat_remount+0x50/0x50 [ 91.970987][ T9267] legacy_get_tree+0x108/0x220 [ 91.975764][ T9267] vfs_get_tree+0x8e/0x300 [ 91.980166][ T9267] do_mount+0x1369/0x1b60 [ 91.984603][ T9267] ? copy_mount_string+0x40/0x40 [ 91.989523][ T9267] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.995759][ T9267] ? _copy_from_user+0x12c/0x1a0 [ 92.000683][ T9267] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 92.007074][ T9267] ? copy_mount_options+0x2e8/0x3f0 [ 92.012259][ T9267] ksys_mount+0xdb/0x150 [ 92.016483][ T9267] __x64_sys_mount+0xbe/0x150 [ 92.021143][ T9267] do_syscall_64+0xfa/0x760 [ 92.025629][ T9267] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.031504][ T9267] RIP: 0033:0x440239 [ 92.035375][ T9267] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 92.054973][ T9267] RSP: 002b:00007ffd20150c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 92.063358][ T9267] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440239 [ 92.071304][ T9267] RDX: 0000000020000080 RSI: 0000000020000100 RDI: 0000000020000140 [ 92.079252][ T9267] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 92.087203][ T9267] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ac0 [ 92.095149][ T9267] R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 [ 92.104550][ T9267] Kernel Offset: disabled [ 92.108931][ T9267] Rebooting in 86400 seconds..