[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 62.577741][ T8526] ------------[ cut here ]------------ [ 62.583412][ T8526] kernel BUG at include/linux/highmem.h:202! [ 62.590104][ T8526] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 62.596172][ T8526] CPU: 0 PID: 8526 Comm: syz-executor603 Not tainted 5.10.0-rc4-next-20201117-syzkaller #0 [ 62.606125][ T8526] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.616180][ T8526] RIP: 0010:truncate_inode_partial_page+0x5aa/0x720 [ 62.622741][ T8526] Code: bc 01 00 00 00 e8 e6 f8 ff ff e9 e7 fe ff ff e8 2c 12 d8 ff 48 c7 c6 00 44 54 89 48 89 ef e8 dd b5 08 00 0f 0b e8 16 12 d8 ff <0f> 0b e8 0f 12 d8 ff 48 c7 c6 80 44 54 89 48 89 ef e8 c0 b5 08 00 [ 62.642319][ T8526] RSP: 0018:ffffc90000f8fa00 EFLAGS: 00010293 [ 62.648363][ T8526] RAX: 0000000000000000 RBX: 0000000000200000 RCX: ffffffff81987fe1 [ 62.656745][ T8526] RDX: ffff88801e614f80 RSI: ffffffff819882ca RDI: 0000000000000005 [ 62.664691][ T8526] RBP: ffffea0000c70000 R08: 0000000000000000 R09: ffffea0000c70007 [ 62.672635][ T8526] R10: 0000000000001000 R11: 0000000000000000 R12: 00000000001ffffa [ 62.680578][ T8526] R13: 00000000001ffffa R14: 0000000000000006 R15: ffffea0000c70008 [ 62.688534][ T8526] FS: 0000000000e30880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 62.697437][ T8526] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.703994][ T8526] CR2: 000000000043e920 CR3: 00000000228a7000 CR4: 00000000001506f0 [ 62.711951][ T8526] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.719906][ T8526] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.727951][ T8526] Call Trace: [ 62.731220][ T8526] shmem_undo_range+0x6fd/0x18f0 [ 62.736143][ T8526] ? unmap_mapping_pages+0x119/0x2a0 [ 62.741400][ T8526] ? shmem_symlink+0x7c0/0x7c0 [ 62.746138][ T8526] ? up_write+0x191/0x560 [ 62.750442][ T8526] ? downgrade_write+0x3a0/0x3a0 [ 62.755351][ T8526] ? rwsem_down_read_slowpath+0xc90/0xc90 [ 62.761062][ T8526] ? vma_interval_tree_subtree_search+0x163/0x1d0 [ 62.767453][ T8526] ? vma_interval_tree_iter_next+0xf3/0x210 [ 62.773325][ T8526] ? unmap_mapping_pages+0x119/0x2a0 [ 62.778587][ T8526] ? do_wp_page+0x1930/0x1930 [ 62.783244][ T8526] ? inode_newsize_ok+0x121/0x1e0 [ 62.788246][ T8526] ? setattr_prepare+0x135/0x7e0 [ 62.793159][ T8526] shmem_setattr+0x67a/0xc70 [ 62.797769][ T8526] ? shmem_fallocate+0xe00/0xe00 [ 62.802723][ T8526] notify_change+0xb60/0x10a0 [ 62.807384][ T8526] ? reuseport_array_update_check.constprop.0+0x240/0x2a0 [ 62.814487][ T8526] do_truncate+0x134/0x1f0 [ 62.818877][ T8526] ? file_open_root+0x410/0x410 [ 62.823702][ T8526] ? apparmor_path_truncate+0x169/0x6e0 [ 62.829222][ T8526] vfs_truncate+0x49e/0x600 [ 62.833706][ T8526] do_sys_truncate.part.0+0x11e/0x140 [ 62.839496][ T8526] ? vfs_truncate+0x600/0x600 [ 62.844146][ T8526] __x64_sys_truncate+0x69/0x90 [ 62.848969][ T8526] do_syscall_64+0x2d/0x70 [ 62.853375][ T8526] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.859242][ T8526] RIP: 0033:0x444109 [ 62.863113][ T8526] 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 db d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.884959][ T8526] RSP: 002b:00007ffec4a90088 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 62.893346][ T8526] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444109 [ 62.901294][ T8526] RDX: 0000000000444109 RSI: 0000000000000006 RDI: 0000000020000040 [ 62.909241][ T8526] RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 [ 62.917187][ T8526] R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000401d70 [ 62.925129][ T8526] R13: 0000000000401e00 R14: 0000000000000000 R15: 0000000000000000 [ 62.933073][ T8526] Modules linked in: [ 62.937049][ T8526] ---[ end trace 910e59f95b39ab18 ]--- [ 62.942515][ T8526] RIP: 0010:truncate_inode_partial_page+0x5aa/0x720 [ 62.949140][ T8526] Code: bc 01 00 00 00 e8 e6 f8 ff ff e9 e7 fe ff ff e8 2c 12 d8 ff 48 c7 c6 00 44 54 89 48 89 ef e8 dd b5 08 00 0f 0b e8 16 12 d8 ff <0f> 0b e8 0f 12 d8 ff 48 c7 c6 80 44 54 89 48 89 ef e8 c0 b5 08 00 [ 62.968837][ T8526] RSP: 0018:ffffc90000f8fa00 EFLAGS: 00010293 [ 62.974905][ T8526] RAX: 0000000000000000 RBX: 0000000000200000 RCX: ffffffff81987fe1 [ 62.983350][ T8526] RDX: ffff88801e614f80 RSI: ffffffff819882ca RDI: 0000000000000005 [ 62.991371][ T8526] RBP: ffffea0000c70000 R08: 0000000000000000 R09: ffffea0000c70007 [ 62.999396][ T8526] R10: 0000000000001000 R11: 0000000000000000 R12: 00000000001ffffa [ 63.007399][ T8526] R13: 00000000001ffffa R14: 0000000000000006 R15: ffffea0000c70008 [ 63.015403][ T8526] FS: 0000000000e30880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 63.024321][ T8526] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.030920][ T8526] CR2: 000000000043e920 CR3: 00000000228a7000 CR4: 00000000001506f0 [ 63.038915][ T8526] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.046900][ T8526] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.054859][ T8526] Kernel panic - not syncing: Fatal exception [ 63.061516][ T8526] Kernel Offset: disabled [ 63.065828][ T8526] Rebooting in 86400 seconds..