[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.71' (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 executing program executing program executing program syzkaller login: [ 44.923528][ T6838] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP KASAN [ 44.935396][ T6838] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7] [ 44.943816][ T6838] CPU: 0 PID: 6838 Comm: systemd-udevd Not tainted 5.9.0-rc1-syzkaller #0 [ 44.952326][ T6838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.962392][ T6838] RIP: 0010:bdev_read_page+0x38/0x1e0 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 [ 44.967754][ T6838] Code: 48 89 54 24 10 48 89 74 24 08 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 96 ae a6 ff 4c 8d a3 f0 00 00 00 4d 89 e5 49 c1 ed 03 <43> 80 7c 35 00 00 74 08 4c 89 e7 e8 68 85 e6 ff 48 89 1c 24 49 8b [ 44.987362][ T6838] RSP: 0018:ffffc90005377830 EFLAGS: 00010206 [ 44.993410][ T6838] RAX: ffffffff81ce498a RBX: 0000000000000000 RCX: ffff8880a76d4440 [ 45.001400][ T6838] RDX: 0000000000000000 RSI: 9000537799800000 RDI: 0000000000000000 [ 45.009359][ T6838] RBP: ffffc900053779e0 R08: ffffffff81cf7680 R09: fffff940004fb7a9 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 [ 45.017343][ T6838] R10: fffff940004fb7a9 R11: 0000000000000000 R12: 00000000000000f0 [ 45.025299][ T6838] R13: 000000000000001e R14: dffffc0000000000 R15: ffffea00027dbd40 [ 45.033266][ T6838] FS: 00007f5668ffc8c0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 45.042194][ T6838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.048799][ T6838] CR2: 00007ffd6e6b2e68 CR3: 0000000098ccf000 CR4: 00000000001506f0 [ 45.056798][ T6838] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.064767][ T6838] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 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 executing program executing program [ 45.072728][ T6838] Call Trace: [ 45.076040][ T6838] do_mpage_readpage+0x15d9/0x1d00 [ 45.081143][ T6838] ? rcu_lock_release+0x5/0x20 [ 45.085918][ T6838] ? xa_load+0x217/0x260 [ 45.090159][ T6838] mpage_readahead+0x389/0x6a0 [ 45.094927][ T6838] ? blkdev_direct_IO+0xd0/0xd0 [ 45.099777][ T6838] read_pages+0xdb/0x760 [ 45.104046][ T6838] page_cache_readahead_unbounded+0x817/0x9c0 [ 45.110114][ T6838] force_page_cache_readahead+0x31d/0x370 [ 45.115856][ T6838] generic_file_buffered_read+0x437/0x3010 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 [ 45.121653][ T6838] vfs_read+0x91f/0xb40 [ 45.125811][ T6838] ksys_read+0x11b/0x220 [ 45.130057][ T6838] do_syscall_64+0x31/0x70 [ 45.134534][ T6838] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.140413][ T6838] RIP: 0033:0x7f5668143210 [ 45.144824][ T6838] 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 [ 45.164425][ T6838] RSP: 002b:00007ffd6e6b5de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 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 [ 45.172898][ T6838] RAX: ffffffffffffffda RBX: 000055a6549e13d0 RCX: 00007f5668143210 [ 45.180916][ T6838] RDX: 0000000000000400 RSI: 000055a6549e13f8 RDI: 000000000000000f [ 45.188877][ T6838] RBP: 000055a6549db180 R08: 00007f566812df68 R09: 0000000000000430 [ 45.196841][ T6838] R10: 000000000000006d R11: 0000000000000246 R12: 0000000000000000 [ 45.204808][ T6838] R13: 0000000000000400 R14: 000055a6549db1d0 R15: 0000000000000400 [ 45.212774][ T6838] Modules linked in: 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 [ 45.244506][ T6838] ---[ end trace 3fb5b447ad578284 ]--- [ 45.250779][ T6838] RIP: 0010:bdev_read_page+0x38/0x1e0 [ 45.256143][ T6838] Code: 48 89 54 24 10 48 89 74 24 08 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 96 ae a6 ff 4c 8d a3 f0 00 00 00 4d 89 e5 49 c1 ed 03 <43> 80 7c 35 00 00 74 08 4c 89 e7 e8 68 85 e6 ff 48 89 1c 24 49 8b [ 45.276938][ T6838] RSP: 0018:ffffc90005377830 EFLAGS: 00010206 [ 45.283456][ T6838] RAX: ffffffff81ce498a RBX: 0000000000000000 RCX: ffff8880a76d4440 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.291886][ T6838] RDX: 0000000000000000 RSI: 9000537799800000 RDI: 0000000000000000 [ 45.300368][ T6838] RBP: ffffc900053779e0 R08: ffffffff81cf7680 R09: fffff940004fb7a9 [ 45.311798][ T6838] R10: fffff940004fb7a9 R11: 0000000000000000 R12: 00000000000000f0 [ 45.320252][ T6838] R13: 000000000000001e R14: dffffc0000000000 R15: ffffea00027dbd40 [ 45.328258][ T6838] FS: 00007f5668ffc8c0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.337961][ T6838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.346165][ T6838] CR2: 00007fb911137020 CR3: 0000000098ccf000 CR4: 00000000001506f0 [ 45.355121][ T6838] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.363588][ T6838] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.372034][ T6838] Kernel panic - not syncing: Fatal exception [ 45.379175][ T6838] Kernel Offset: disabled [ 45.383518][ T6838] Rebooting in 86400 seconds..