[ 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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.126658][ T8445] FAULT_INJECTION: forcing a failure. [ 71.126658][ T8445] name failslab, interval 1, probability 0, space 0, times 1 [ 71.139991][ T8445] CPU: 1 PID: 8445 Comm: syz-executor211 Not tainted 5.14.0-rc6-syzkaller #0 [ 71.148777][ T8445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.158821][ T8445] Call Trace: [ 71.162086][ T8445] dump_stack_lvl+0xcd/0x134 [ 71.166689][ T8445] should_fail.cold+0x5/0xa [ 71.171185][ T8445] ? allocate_file_region_entries+0x1b2/0x660 [ 71.177236][ T8445] should_failslab+0x5/0x10 [ 71.181726][ T8445] kmem_cache_alloc_trace+0x55/0x3c0 [ 71.187002][ T8445] allocate_file_region_entries+0x1b2/0x660 [ 71.192881][ T8445] ? hugetlb_vm_op_open+0x280/0x280 [ 71.198067][ T8445] region_chg+0x85/0x140 [ 71.202296][ T8445] __vma_reservation_common+0x430/0x6d0 [ 71.207826][ T8445] ? region_del+0xca0/0xca0 [ 71.212314][ T8445] ? lock_downgrade+0x6e0/0x6e0 [ 71.217165][ T8445] ? make_huge_pte.isra.0+0xec/0x370 [ 71.222448][ T8445] restore_reserve_on_error+0x33/0x1e0 [ 71.227891][ T8445] hugetlb_cow+0x8a2/0x1860 [ 71.232386][ T8445] ? lock_release+0x720/0x720 [ 71.237060][ T8445] ? unmap_hugepage_range+0x100/0x100 [ 71.242425][ T8445] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.248650][ T8445] ? rwlock_bug.part.0+0x90/0x90 [ 71.253572][ T8445] ? find_held_lock+0x2d/0x110 [ 71.258322][ T8445] hugetlb_fault+0x1fbc/0x2660 [ 71.263125][ T8445] handle_mm_fault+0x661/0x790 [ 71.267889][ T8445] do_user_addr_fault+0x48b/0x11c0 [ 71.273051][ T8445] exc_page_fault+0x9e/0x180 [ 71.277636][ T8445] asm_exc_page_fault+0x1e/0x30 [ 71.282516][ T8445] RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 [ 71.289099][ T8445] Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8 [ 71.308787][ T8445] RSP: 0018:ffffc900017af9c8 EFLAGS: 00010206 [ 71.314840][ T8445] RAX: 0000000000000001 RBX: 0000000000001000 RCX: 0000000000001000 [ 71.322802][ T8445] RDX: 0000000000001000 RSI: ffff8880337a0000 RDI: 0000000020000680 [ 71.330895][ T8445] RBP: 0000000020000680 R08: 0000000000000000 R09: ffff8880337a0fff [ 71.338976][ T8445] R10: ffffed10066f41ff R11: 0000000000000000 R12: ffff8880337a0000 [ 71.346932][ T8445] R13: 0000000020001680 R14: 0000000000000000 R15: ffffc900017afd68 [ 71.354908][ T8445] copyout.part.0+0xe4/0x110 [ 71.359555][ T8445] copy_page_to_iter+0x3ae/0xe20 [ 71.364491][ T8445] filemap_read+0x61e/0xe40 [ 71.368991][ T8445] ? filemap_get_pages+0x1940/0x1940 [ 71.374265][ T8445] ? apparmor_ptrace_access_check+0x3ff/0x510 [ 71.380338][ T8445] generic_file_read_iter+0x397/0x4f0 [ 71.385704][ T8445] ext4_file_read_iter+0x1d4/0x5d0 [ 71.390802][ T8445] new_sync_read+0x41e/0x6e0 [ 71.395381][ T8445] ? ksys_lseek+0x1b0/0x1b0 [ 71.399875][ T8445] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.405850][ T8445] vfs_read+0x35c/0x570 [ 71.409993][ T8445] ksys_read+0x12d/0x250 [ 71.414238][ T8445] ? vfs_write+0xa40/0xa40 [ 71.418649][ T8445] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.424533][ T8445] do_syscall_64+0x35/0xb0 [ 71.428936][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.434824][ T8445] RIP: 0033:0x43f589 [ 71.438704][ T8445] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 71.458291][ T8445] RSP: 002b:00007ffedef26928 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 71.466686][ T8445] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000043f589 [ 71.474641][ T8445] RDX: 000000000000effd RSI: 0000000020000680 RDI: 0000000000000003 [ 71.482591][ T8445] RBP: 00007ffedef26930 R08: 0000000000000001 R09: 0000000000400034 [ 71.490544][ T8445] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 71.498505][ T8445] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 71.511504][ T8445] ------------[ cut here ]------------ [ 71.516971][ T8445] kernel BUG at fs/hugetlbfs/inode.c:532! [ 71.523432][ T8445] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 71.529501][ T8445] CPU: 1 PID: 8445 Comm: syz-executor211 Not tainted 5.14.0-rc6-syzkaller #0 [ 71.538238][ T8445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.548275][ T8445] RIP: 0010:remove_inode_hugepages+0x52f/0xa90 [ 71.554413][ T8445] Code: ff e8 d5 f2 4c ff 48 89 ef e8 3d c3 70 ff e9 17 ff ff ff e8 c3 f2 4c ff 48 89 ef e8 cb 50 71 ff e9 1a fe ff ff e8 b1 f2 4c ff <0f> 0b e8 aa f2 4c ff 49 83 ed 01 e9 d5 fd ff ff e8 9c f2 4c ff 48 [ 71.573996][ T8445] RSP: 0018:ffffc900017afa30 EFLAGS: 00010293 [ 71.580039][ T8445] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.588023][ T8445] RDX: ffff888017093880 RSI: ffffffff8228b64f RDI: 0000000000000003 [ 71.595974][ T8445] RBP: ffffea0000a48000 R08: 0000000000000000 R09: ffffea0000a4802f [ 71.603927][ T8445] R10: ffffffff8228b4a7 R11: 0000000000000000 R12: 7fffffffffffffff [ 71.611892][ T8445] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 71.619839][ T8445] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 71.628748][ T8445] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.635323][ T8445] CR2: 00000000004801c0 CR3: 0000000029917000 CR4: 00000000001506e0 [ 71.643277][ T8445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.651224][ T8445] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.659172][ T8445] Call Trace: [ 71.662472][ T8445] ? hugetlbfs_read_iter+0xab0/0xab0 [ 71.667761][ T8445] ? find_held_lock+0x2d/0x110 [ 71.672539][ T8445] ? evict+0x2b7/0x6b0 [ 71.676613][ T8445] ? lock_downgrade+0x6e0/0x6e0 [ 71.681465][ T8445] ? var_wake_function+0x130/0x130 [ 71.686600][ T8445] ? rwlock_bug.part.0+0x90/0x90 [ 71.691519][ T8445] ? hugetlbfs_setattr+0x500/0x500 [ 71.696609][ T8445] hugetlbfs_evict_inode+0x1f/0x70 [ 71.701700][ T8445] evict+0x2ed/0x6b0 [ 71.705577][ T8445] iput.part.0+0x539/0x850 [ 71.709974][ T8445] iput+0x58/0x70 [ 71.713587][ T8445] dentry_unlink_inode+0x2b1/0x3d0 [ 71.718674][ T8445] __dentry_kill+0x3c0/0x640 [ 71.723263][ T8445] ? dput+0x35/0xbc0 [ 71.727233][ T8445] ? dput+0x35/0xbc0 [ 71.731108][ T8445] dput+0x73a/0xbc0 [ 71.734903][ T8445] __fput+0x3ae/0x920 [ 71.738866][ T8445] task_work_run+0xdd/0x1a0 [ 71.743350][ T8445] do_exit+0xbd4/0x2a60 [ 71.747482][ T8445] ? __context_tracking_exit+0xb8/0xe0 [ 71.752927][ T8445] ? lock_downgrade+0x6e0/0x6e0 [ 71.757756][ T8445] ? lock_downgrade+0x6e0/0x6e0 [ 71.762585][ T8445] ? mm_update_next_owner+0x7a0/0x7a0 [ 71.767954][ T8445] do_group_exit+0x125/0x310 [ 71.772524][ T8445] __x64_sys_exit_group+0x3a/0x50 [ 71.777540][ T8445] do_syscall_64+0x35/0xb0 [ 71.781949][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.787830][ T8445] RIP: 0033:0x43e289 [ 71.791699][ T8445] Code: Unable to access opcode bytes at RIP 0x43e25f. [ 71.798516][ T8445] RSP: 002b:00007ffedef26908 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 71.806922][ T8445] RAX: ffffffffffffffda RBX: 00000000004af3b0 RCX: 000000000043e289 [ 71.814883][ T8445] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 71.822857][ T8445] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000400034 [ 71.830809][ T8445] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004af3b0 [ 71.838757][ T8445] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 71.846719][ T8445] Modules linked in: [ 71.851554][ T8445] ---[ end trace b9c8e89a63f407f9 ]--- [ 71.857007][ T8445] RIP: 0010:remove_inode_hugepages+0x52f/0xa90 [ 71.863440][ T8445] Code: ff e8 d5 f2 4c ff 48 89 ef e8 3d c3 70 ff e9 17 ff ff ff e8 c3 f2 4c ff 48 89 ef e8 cb 50 71 ff e9 1a fe ff ff e8 b1 f2 4c ff <0f> 0b e8 aa f2 4c ff 49 83 ed 01 e9 d5 fd ff ff e8 9c f2 4c ff 48 [ 71.883115][ T8445] RSP: 0018:ffffc900017afa30 EFLAGS: 00010293 [ 71.889190][ T8445] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.897415][ T8445] RDX: ffff888017093880 RSI: ffffffff8228b64f RDI: 0000000000000003 [ 71.905483][ T8445] RBP: ffffea0000a48000 R08: 0000000000000000 R09: ffffea0000a4802f [ 71.913498][ T8445] R10: ffffffff8228b4a7 R11: 0000000000000000 R12: 7fffffffffffffff [ 71.921511][ T8445] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 71.929479][ T8445] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 71.938438][ T8445] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.945127][ T8445] CR2: 00000000004801c0 CR3: 0000000029917000 CR4: 00000000001506e0 [ 71.953197][ T8445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.961197][ T8445] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.969222][ T8445] Kernel panic - not syncing: Fatal exception [ 71.976641][ T8445] Kernel Offset: disabled [ 71.980955][ T8445] Rebooting in 86400 seconds..