Warning: Permanently added '10.128.0.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.548085][ T9120] [EXFAT] trying to mount... [ 76.553746][ T2612] block nbd0: Attempted send on invalid socket [ 76.560234][ T2612] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 76.571664][ T9120] ------------[ cut here ]------------ [ 76.577448][ T9120] [EXFAT] No bh, device seems wrong or to be ejected. [ 76.584677][ T9120] WARNING: CPU: 0 PID: 9120 at drivers/staging/exfat/exfat_blkdev.c:62 exfat_bdev_read+0x24f/0x2b0 [ 76.595342][ T9120] Kernel panic - not syncing: panic_on_warn set ... [ 76.601935][ T9120] CPU: 0 PID: 9120 Comm: syz-executor419 Not tainted 5.4.0-next-20191206-syzkaller #0 [ 76.611460][ T9120] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.621497][ T9120] Call Trace: [ 76.624788][ T9120] dump_stack+0x197/0x210 [ 76.629122][ T9120] ? exfat_bdev_read+0x1c0/0x2b0 [ 76.634058][ T9120] panic+0x2e3/0x75c [ 76.637935][ T9120] ? add_taint.cold+0x16/0x16 [ 76.642611][ T9120] ? __kasan_check_write+0x14/0x20 [ 76.647718][ T9120] ? __warn.cold+0x14/0x3e [ 76.652123][ T9120] ? __warn+0xd9/0x1cf [ 76.656185][ T9120] ? exfat_bdev_read+0x24f/0x2b0 [ 76.661122][ T9120] __warn.cold+0x2f/0x3e [ 76.665349][ T9120] ? exfat_bdev_read+0x24f/0x2b0 [ 76.670266][ T9120] report_bug+0x289/0x300 [ 76.674593][ T9120] do_error_trap+0x11b/0x200 [ 76.679161][ T9120] do_invalid_op+0x37/0x50 [ 76.683569][ T9120] ? exfat_bdev_read+0x24f/0x2b0 [ 76.688485][ T9120] invalid_op+0x23/0x30 [ 76.692621][ T9120] RIP: 0010:exfat_bdev_read+0x24f/0x2b0 [ 76.698141][ T9120] Code: 00 00 31 ff 41 bc fb ff ff ff 89 de e8 1a 6b 92 fb 85 db 0f 85 5d ff ff ff e8 8d 69 92 fb 48 c7 c7 a0 7a ca 88 e8 90 15 63 fb <0f> 0b e9 45 ff ff ff e8 55 0c d0 fb e9 ad fe ff ff e8 0b 0c d0 fb [ 76.717735][ T9120] RSP: 0018:ffffc90001d77aa0 EFLAGS: 00010282 [ 76.723798][ T9120] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 76.731764][ T9120] RDX: 0000000000000000 RSI: ffffffff815e5536 RDI: fffff520003aef46 [ 76.739715][ T9120] RBP: ffffc90001d77ad8 R08: ffff8880a3e26300 R09: fffffbfff16597b2 [ 76.747842][ T9120] R10: fffffbfff16597b1 R11: ffffffff8b2cbd8f R12: 00000000fffffffb [ 76.755807][ T9120] R13: ffff88808aa40000 R14: 0000000000000001 R15: 0000000000000000 [ 76.763776][ T9120] ? vprintk_func+0x86/0x189 [ 76.768352][ T9120] sector_read+0x140/0x1f0 [ 76.772766][ T9120] exfat_fill_super.cold+0x2e4/0x895 [ 76.778059][ T9120] ? exfat_read_root+0x8f0/0x8f0 [ 76.782986][ T9120] ? snprintf+0xbb/0xf0 [ 76.787137][ T9120] ? wait_for_completion+0x440/0x440 [ 76.792411][ T9120] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 76.798142][ T9120] ? set_blocksize+0x2bf/0x340 [ 76.802903][ T9120] mount_bdev+0x304/0x3c0 [ 76.807216][ T9120] ? exfat_read_root+0x8f0/0x8f0 [ 76.812138][ T9120] exfat_fs_mount+0x35/0x40 [ 76.816630][ T9120] ? exfat_remount+0x50/0x50 [ 76.821201][ T9120] legacy_get_tree+0x108/0x220 [ 76.825952][ T9120] vfs_get_tree+0x8e/0x300 [ 76.830352][ T9120] do_mount+0x135a/0x1b50 [ 76.834678][ T9120] ? copy_mount_string+0x40/0x40 [ 76.839603][ T9120] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.845846][ T9120] ? _copy_from_user+0x12c/0x1a0 [ 76.850781][ T9120] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.857004][ T9120] ? copy_mount_options+0x2e8/0x3f0 [ 76.862183][ T9120] ksys_mount+0xdb/0x150 [ 76.866405][ T9120] __x64_sys_mount+0xbe/0x150 [ 76.871073][ T9120] do_syscall_64+0xfa/0x790 [ 76.875598][ T9120] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.881467][ T9120] RIP: 0033:0x440179 [ 76.885343][ T9120] 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 [ 76.904928][ T9120] RSP: 002b:00007ffec4d78368 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 76.913332][ T9120] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440179 [ 76.921281][ T9120] RDX: 0000000020000080 RSI: 0000000020000180 RDI: 0000000020000000 [ 76.929233][ T9120] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 76.937216][ T9120] R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000401a00 [ 76.945189][ T9120] R13: 0000000000401a90 R14: 0000000000000000 R15: 0000000000000000 [ 76.954592][ T9120] Kernel Offset: disabled [ 76.959008][ T9120] Rebooting in 86400 seconds..