Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 61.428096][ T6846] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP KASAN [ 61.439848][ T6846] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7] [ 61.448251][ T6846] CPU: 0 PID: 6846 Comm: systemd-udevd Not tainted 5.9.0-rc1-syzkaller #0 [ 61.456762][ T6846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.466829][ T6846] RIP: 0010:bdev_read_page+0x37/0x290 [ 61.472200][ T6846] Code: 4c 8d b3 f0 00 00 00 48 83 ec 10 48 89 54 24 08 48 89 34 24 e8 ea f3 a3 ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 48 8b ab f0 00 00 00 48 ba 00 00 00 [ 61.491801][ T6846] RSP: 0018:ffffc90001647560 EFLAGS: 00010206 [ 61.497868][ T6846] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81d11a3a [ 61.505839][ T6846] RDX: 000000000000001e RSI: ffffffff81d04b26 RDI: 0000000000000000 [ 61.513813][ T6846] RBP: fff897467d600000 R08: 0000000000000001 R09: ffffea00025fc247 [ 61.521787][ T6846] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 61.529761][ T6846] R13: 0000000000000000 R14: 00000000000000f0 R15: ffffc90001647780 [ 61.537744][ T6846] FS: 00007f3f9798a8c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 61.546666][ T6846] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.553239][ T6846] CR2: 00007ffe22125ff8 CR3: 00000000935a9000 CR4: 00000000001506f0 [ 61.561212][ T6846] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.569187][ T6846] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.577152][ T6846] Call Trace: [ 61.580447][ T6846] do_mpage_readpage+0x10ca/0x1ef0 [ 61.585567][ T6846] ? lock_downgrade+0x830/0x830 [ 61.590682][ T6846] ? mpage_writepage+0x1b0/0x1b0 [ 61.595700][ T6846] ? __xa_clear_mark+0x110/0x110 [ 61.600641][ T6846] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 61.606624][ T6846] ? __lock_acquire+0x16cb/0x5640 [ 61.611655][ T6846] mpage_readahead+0x3a3/0x880 [ 61.616493][ T6846] ? do_mpage_readpage+0x1ef0/0x1ef0 [ 61.621783][ T6846] ? bdev_evict_inode+0x410/0x410 [ 61.626819][ T6846] ? lock_downgrade+0x830/0x830 [ 61.631676][ T6846] ? blkdev_write_begin+0x40/0x40 [ 61.637050][ T6846] read_pages+0x1df/0x8d0 [ 61.641395][ T6846] ? read_cache_pages+0x750/0x750 [ 61.646423][ T6846] ? add_to_page_cache_lru+0x2ab/0x5b0 [ 61.651888][ T6846] ? alloc_pages_current+0x18f/0x280 [ 61.657177][ T6846] ? __page_cache_alloc+0x10b/0x450 [ 61.662385][ T6846] page_cache_readahead_unbounded+0x572/0x850 [ 61.668456][ T6846] ? lock_acquire+0x1f1/0xad0 [ 61.673136][ T6846] ? read_pages+0x8d0/0x8d0 [ 61.677639][ T6846] ? blk_cgroup_congested+0x1f9/0x3e0 [ 61.683020][ T6846] force_page_cache_readahead+0x2e9/0x460 [ 61.688744][ T6846] page_cache_sync_readahead+0x113/0x130 [ 61.694390][ T6846] generic_file_buffered_read+0x159d/0x3150 [ 61.700287][ T6846] generic_file_read_iter+0x396/0x4e0 [ 61.705665][ T6846] ? aa_path_link+0x2f0/0x2f0 [ 61.710346][ T6846] blkdev_read_iter+0x11b/0x180 [ 61.715237][ T6846] new_sync_read+0x41a/0x6e0 [ 61.719820][ T6846] ? vfs_dedupe_file_range+0x780/0x780 [ 61.725287][ T6846] vfs_read+0x383/0x5a0 [ 61.729540][ T6846] ksys_read+0x12d/0x250 [ 61.733773][ T6846] ? vfs_write+0x730/0x730 [ 61.738180][ T6846] ? __secure_computing+0x104/0x360 [ 61.743380][ T6846] do_syscall_64+0x2d/0x70 [ 61.747794][ T6846] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.753678][ T6846] RIP: 0033:0x7f3f96ad1210 [ 61.758086][ T6846] Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.777786][ T6846] RSP: 002b:00007ffe22129028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 61.786296][ T6846] RAX: ffffffffffffffda RBX: 0000564c86b91b00 RCX: 00007f3f96ad1210 [ 61.794267][ T6846] RDX: 0000000000000400 RSI: 0000564c86b91b28 RDI: 000000000000000f [ 61.802239][ T6846] RBP: 0000564c86b929c0 R08: 00007f3f96abbf68 R09: 0000000000000430 [ 61.810211][ T6846] R10: 000000000000006d R11: 0000000000000246 R12: 0000000000000000 [ 61.818268][ T6846] R13: 0000000000000400 R14: 0000564c86b92a10 R15: 0000000000000400 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.826927][ T6846] Modules linked in: [ 61.847565][ T6846] ---[ end trace db0a317aa22b64dd ]--- [ 61.853052][ T6846] RIP: 0010:bdev_read_page+0x37/0x290 [ 61.859427][ T6846] Code: 4c 8d b3 f0 00 00 00 48 83 ec 10 48 89 54 24 08 48 89 34 24 e8 ea f3 a3 ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 01 00 00 48 8b ab f0 00 00 00 48 ba 00 00 00 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.880389][ T6846] RSP: 0018:ffffc90001647560 EFLAGS: 00010206 [ 61.887210][ T6846] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81d11a3a [ 61.895450][ T6846] RDX: 000000000000001e RSI: ffffffff81d04b26 RDI: 0000000000000000 [ 61.904329][ T6846] RBP: fff897467d600000 R08: 0000000000000001 R09: ffffea00025fc247 [ 61.913006][ T6846] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 61.921772][ T6846] R13: 0000000000000000 R14: 00000000000000f0 R15: ffffc90001647780 executing program executing program executing program [ 61.930368][ T6846] FS: 00007f3f9798a8c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 61.939832][ T6846] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.947049][ T6846] CR2: 00007f9d64c8e000 CR3: 00000000935a9000 CR4: 00000000001506f0 [ 61.955371][ T6846] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.964407][ T6846] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.973350][ T6846] Kernel panic - not syncing: Fatal exception [ 61.980734][ T6846] Kernel Offset: disabled [ 61.985162][ T6846] Rebooting in 86400 seconds..