[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.98' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.720419] kasan: CONFIG_KASAN_INLINE enabled [ 35.725195] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.732596] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.738822] CPU: 0 PID: 8112 Comm: syz-executor396 Not tainted 4.19.211-syzkaller #0 [ 35.746677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 35.756021] RIP: 0010:hfs_find_init+0x70/0x230 [ 35.760581] Code: c1 ea 03 80 3c 02 00 0f 85 bc 01 00 00 4c 8d 6b 40 48 c7 45 18 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 6b 01 00 00 8b 43 40 be c0 00 [ 35.779468] RSP: 0018:ffff8880971e7530 EFLAGS: 00010202 [ 35.784809] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81fe0980 [ 35.792056] RDX: 0000000000000008 RSI: ffffffff81fd1c41 RDI: ffff8880971e75b0 [ 35.799306] RBP: ffff8880971e7598 R08: 0000000000000000 R09: 0000000000000004 [ 35.806556] R10: 0000000000000004 R11: 0000000000074071 R12: ffff8880ab31a340 [ 35.813806] R13: 0000000000000040 R14: ffff888094d37772 R15: ffff8880971e7598 [ 35.821058] FS: 0000555556eef300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.829264] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.835132] CR2: 00007fffc2a46000 CR3: 00000000a44fc000 CR4: 00000000003406f0 [ 35.842468] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.849715] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.856958] Call Trace: [ 35.859531] hfs_ext_read_extent+0x191/0xa20 [ 35.863920] ? __hfs_ext_write_extent+0x510/0x510 [ 35.868741] ? create_page_buffers+0x212/0x350 [ 35.873303] ? alloc_page_buffers+0x2da/0x5c0 [ 35.877780] ? lock_downgrade+0x720/0x720 [ 35.881906] ? do_raw_spin_lock+0xcb/0x220 [ 35.886123] hfs_get_block+0x53d/0x7e0 [ 35.889990] block_read_full_page+0x288/0xd10 [ 35.894466] ? hfs_extend_file+0xac0/0xac0 [ 35.898681] ? __bread_gfp+0x300/0x300 [ 35.902561] ? add_to_page_cache_locked+0x40/0x40 [ 35.907385] do_read_cache_page+0x533/0x1170 [ 35.911773] ? hfs_bmap+0x30/0x30 [ 35.915205] hfs_btree_open+0x6ae/0x1430 [ 35.919245] hfs_mdb_get+0x1402/0x1cf0 [ 35.923112] ? hfs_mdb_put+0x370/0x370 [ 35.926981] ? check_preemption_disabled+0x41/0x280 [ 35.931978] ? __lockdep_init_map+0x100/0x5a0 [ 35.936454] ? __lockdep_init_map+0x100/0x5a0 [ 35.940927] hfs_fill_super+0xd6a/0x1310 [ 35.944968] ? hfs_alloc_inode+0x40/0x40 [ 35.949008] ? vsnprintf+0x2cc/0x14f0 [ 35.952788] ? pointer+0x850/0x850 [ 35.956307] ? lock_downgrade+0x720/0x720 [ 35.960434] ? snprintf+0xbb/0xf0 [ 35.963863] ? vsprintf+0x30/0x30 [ 35.967298] ? wait_for_completion_io+0x10/0x10 [ 35.971946] ? set_blocksize+0x163/0x3f0 [ 35.975985] mount_bdev+0x2fc/0x3b0 [ 35.979589] ? hfs_alloc_inode+0x40/0x40 [ 35.983627] mount_fs+0xa3/0x310 [ 35.986975] vfs_kern_mount.part.0+0x68/0x470 [ 35.991449] do_mount+0x115c/0x2f50 [ 35.995054] ? cmp_ex_sort+0xc0/0xc0 [ 35.998749] ? __do_page_fault+0x180/0xd60 [ 36.003134] ? copy_mount_string+0x40/0x40 [ 36.007349] ? copy_mount_options+0x1cd/0x380 [ 36.011823] ? memset+0x20/0x40 [ 36.015088] ? copy_mount_options+0x26f/0x380 [ 36.019559] ksys_mount+0xcf/0x130 [ 36.023082] __x64_sys_mount+0xba/0x150 [ 36.027039] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.031601] do_syscall_64+0xf9/0x620 [ 36.035729] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.040896] RIP: 0033:0x7f40c8337afa [ 36.044587] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.063465] RSP: 002b:00007fffc2a45918 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.071149] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f40c8337afa [ 36.078396] RDX: 0000000020000240 RSI: 0000000020000000 RDI: 00007fffc2a45930 [ 36.085643] RBP: 00007fffc2a45930 R08: 00007fffc2a45970 R09: 0000000000000248 [ 36.092888] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.100137] R13: 0000555556eef2c0 R14: 0000000000000000 R15: 00007fffc2a45970 [ 36.107383] Modules linked in: [ 36.112606] ---[ end trace 87cc7595134734a3 ]--- [ 36.117383] RIP: 0010:hfs_find_init+0x70/0x230 [ 36.121966] Code: c1 ea 03 80 3c 02 00 0f 85 bc 01 00 00 4c 8d 6b 40 48 c7 45 18 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 6b 01 00 00 8b 43 40 be c0 00 [ 36.141286] RSP: 0018:ffff8880971e7530 EFLAGS: 00010202 [ 36.146726] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81fe0980 [ 36.154462] RDX: 0000000000000008 RSI: ffffffff81fd1c41 RDI: ffff8880971e75b0 [ 36.161717] RBP: ffff8880971e7598 R08: 0000000000000000 R09: 0000000000000004 [ 36.169016] R10: 0000000000000004 R11: 0000000000074071 R12: ffff8880ab31a340 [ 36.176703] R13: 0000000000000040 R14: ffff888094d37772 R15: ffff8880971e7598 [ 36.183999] FS: 0000555556eef300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.192222] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.198143] CR2: 000055667a475500 CR3: 00000000a44fc000 CR4: 00000000003406e0 [ 36.205455] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.212749] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.220005] Kernel panic - not syncing: Fatal exception [ 36.225516] Kernel Offset: disabled [ 36.229125] Rebooting in 86400 seconds..