Starting OpenBSD Secure Shell server... Starting Permit User Sessions... Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Regular background program processing daemon. Starting System Logging Service... [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.542352][ T35] audit: type=1400 audit(1604627155.486:8): avc: denied { execmem } for pid=8496 comm="syz-executor391" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 72.556561][ T8496] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 72.571303][ T8496] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 72.582388][ T8496] F2FS-fs (loop0): invalid crc_offset: 0 [ 72.615485][ T8496] F2FS-fs (loop0): access invalid blkaddr:1 [ 72.621599][ T8496] ------------[ cut here ]------------ [ 72.627179][ T8496] WARNING: CPU: 1 PID: 8496 at fs/f2fs/checkpoint.c:189 f2fs_is_valid_blkaddr+0xdb2/0xf80 [ 72.637172][ T8496] Modules linked in: [ 72.641089][ T8496] CPU: 1 PID: 8496 Comm: syz-executor391 Not tainted 5.10.0-rc2-syzkaller #0 [ 72.649933][ T8496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.660109][ T8496] RIP: 0010:f2fs_is_valid_blkaddr+0xdb2/0xf80 [ 72.666276][ T8496] Code: 89 e2 48 89 df 48 c7 c6 00 70 91 89 e8 84 34 5e 05 48 8d bb b8 00 00 00 be 08 00 00 00 e8 96 9e 5a fe f0 80 8b b8 00 00 00 04 <0f> 0b e9 af f7 ff ff e8 82 c0 5a fe e9 a5 fa ff ff e8 88 c0 5a fe [ 72.686000][ T8496] RSP: 0018:ffffc90000f17718 EFLAGS: 00010206 [ 72.692076][ T8496] RAX: 0000000000000001 RBX: ffff8880279b4000 RCX: ffffffff835681ca [ 72.700100][ T8496] RDX: ffffed1004f36818 RSI: 0000000000000008 RDI: ffff8880279b40b8 [ 72.708211][ T8496] RBP: 0000000000000007 R08: 0000000000000001 R09: ffff8880279b40bf [ 72.716322][ T8496] R10: ffffed1004f36817 R11: 0000000000000000 R12: 0000000000000001 [ 72.724397][ T8496] R13: ffff8880128f9000 R14: 0000000000001400 R15: 0000000000000400 [ 72.732575][ T8496] FS: 0000000002664880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 72.741727][ T8496] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.748441][ T8496] CR2: 000000000043f480 CR3: 000000001b31b000 CR4: 00000000001506e0 [ 72.756536][ T8496] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.764692][ T8496] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.772898][ T8496] Call Trace: [ 72.776277][ T8496] f2fs_get_node_info+0x4b4/0xbc0 [ 72.781337][ T8496] ? f2fs_try_to_free_nats+0x330/0x330 [ 72.786913][ T8496] ? file_write_and_wait_range+0x200/0x200 [ 72.792721][ T8496] read_node_page+0x4a6/0x9b0 [ 72.797462][ T8496] ? truncate_node+0x870/0x870 [ 72.802231][ T8496] ? lru_cache_add+0x5ca/0xb40 [ 72.807106][ T8496] ? pagecache_get_page+0x23c/0x1460 [ 72.812413][ T8496] __get_node_page.part.0+0xa2/0xac0 [ 72.817781][ T8496] f2fs_get_node_page+0x109/0x180 [ 72.822829][ T8496] f2fs_iget+0x233/0x4d70 [ 72.827261][ T8496] ? __mutex_unlock_slowpath+0xe2/0x610 [ 72.832806][ T8496] ? wait_for_completion+0x260/0x260 [ 72.838157][ T8496] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.843818][ T8496] ? kmem_cache_alloc_trace+0x17b/0x440 [ 72.849357][ T8496] f2fs_fill_super+0x3e48/0x7410 [ 72.854364][ T8496] ? vsprintf+0x30/0x30 [ 72.858532][ T8496] ? f2fs_commit_super+0x840/0x840 [ 72.863835][ T8496] ? wait_for_completion+0x260/0x260 [ 72.869132][ T8496] ? set_blocksize+0x1c1/0x400 [ 72.873965][ T8496] mount_bdev+0x32e/0x3f0 [ 72.878306][ T8496] ? f2fs_commit_super+0x840/0x840 [ 72.883508][ T8496] ? __bpf_trace_f2fs_fiemap+0x1b0/0x1b0 [ 72.889137][ T8496] legacy_get_tree+0x105/0x220 [ 72.893998][ T8496] vfs_get_tree+0x89/0x2f0 [ 72.898430][ T8496] path_mount+0x13ad/0x20c0 [ 72.902938][ T8496] ? strncpy_from_user+0x29e/0x3a0 [ 72.908184][ T8496] ? finish_automount+0xac0/0xac0 [ 72.913297][ T8496] ? getname_flags.part.0+0x1dd/0x4f0 [ 72.918682][ T8496] __x64_sys_mount+0x27f/0x300 [ 72.923537][ T8496] ? copy_mnt_ns+0xa60/0xa60 [ 72.928132][ T8496] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.934175][ T8496] do_syscall_64+0x2d/0x70 [ 72.938646][ T8496] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.944651][ T8496] RIP: 0033:0x44766a [ 72.948557][ T8496] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 72.968265][ T8496] RSP: 002b:00007fffd2a3bc68 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 72.976840][ T8496] RAX: ffffffffffffffda RBX: 00007fffd2a3bcc0 RCX: 000000000044766a [ 72.984914][ T8496] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffd2a3bc80 [ 72.992880][ T8496] RBP: 00007fffd2a3bc80 R08: 00007fffd2a3bcc0 R09: 00007fff00000015 [ 73.000906][ T8496] R10: 0000000000000000 R11: 0000000000000297 R12: 000000000000002f [ 73.008986][ T8496] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 73.017036][ T8496] Kernel panic - not syncing: panic_on_warn set ... [ 73.023644][ T8496] CPU: 1 PID: 8496 Comm: syz-executor391 Not tainted 5.10.0-rc2-syzkaller #0 [ 73.032463][ T8496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.042496][ T8496] Call Trace: [ 73.045797][ T8496] dump_stack+0x107/0x163 [ 73.050106][ T8496] panic+0x306/0x73d [ 73.053996][ T8496] ? __warn_printk+0xf3/0xf3 [ 73.058571][ T8496] ? __warn.cold+0x1d/0xbb [ 73.062963][ T8496] ? __warn.cold+0x14/0xbb [ 73.067358][ T8496] ? f2fs_is_valid_blkaddr+0xdb2/0xf80 [ 73.072806][ T8496] __warn.cold+0x38/0xbb [ 73.077126][ T8496] ? f2fs_is_valid_blkaddr+0xdb2/0xf80 [ 73.082566][ T8496] report_bug+0x1bd/0x210 [ 73.086881][ T8496] handle_bug+0x3c/0x60 [ 73.091015][ T8496] exc_invalid_op+0x14/0x40 [ 73.095504][ T8496] asm_exc_invalid_op+0x12/0x20 [ 73.100418][ T8496] RIP: 0010:f2fs_is_valid_blkaddr+0xdb2/0xf80 [ 73.106476][ T8496] Code: 89 e2 48 89 df 48 c7 c6 00 70 91 89 e8 84 34 5e 05 48 8d bb b8 00 00 00 be 08 00 00 00 e8 96 9e 5a fe f0 80 8b b8 00 00 00 04 <0f> 0b e9 af f7 ff ff e8 82 c0 5a fe e9 a5 fa ff ff e8 88 c0 5a fe [ 73.126326][ T8496] RSP: 0018:ffffc90000f17718 EFLAGS: 00010206 [ 73.132385][ T8496] RAX: 0000000000000001 RBX: ffff8880279b4000 RCX: ffffffff835681ca [ 73.140351][ T8496] RDX: ffffed1004f36818 RSI: 0000000000000008 RDI: ffff8880279b40b8 [ 73.148326][ T8496] RBP: 0000000000000007 R08: 0000000000000001 R09: ffff8880279b40bf [ 73.156280][ T8496] R10: ffffed1004f36817 R11: 0000000000000000 R12: 0000000000000001 [ 73.164233][ T8496] R13: ffff8880128f9000 R14: 0000000000001400 R15: 0000000000000400 [ 73.172196][ T8496] ? f2fs_is_valid_blkaddr+0xdaa/0xf80 [ 73.177667][ T8496] ? f2fs_is_valid_blkaddr+0xdaa/0xf80 [ 73.183225][ T8496] f2fs_get_node_info+0x4b4/0xbc0 [ 73.188235][ T8496] ? f2fs_try_to_free_nats+0x330/0x330 [ 73.193677][ T8496] ? file_write_and_wait_range+0x200/0x200 [ 73.199482][ T8496] read_node_page+0x4a6/0x9b0 [ 73.204142][ T8496] ? truncate_node+0x870/0x870 [ 73.208903][ T8496] ? lru_cache_add+0x5ca/0xb40 [ 73.213661][ T8496] ? pagecache_get_page+0x23c/0x1460 [ 73.218932][ T8496] __get_node_page.part.0+0xa2/0xac0 [ 73.224205][ T8496] f2fs_get_node_page+0x109/0x180 [ 73.229234][ T8496] f2fs_iget+0x233/0x4d70 [ 73.233560][ T8496] ? __mutex_unlock_slowpath+0xe2/0x610 [ 73.239093][ T8496] ? wait_for_completion+0x260/0x260 [ 73.244359][ T8496] ? rcu_read_lock_sched_held+0x3a/0x70 [ 73.249883][ T8496] ? kmem_cache_alloc_trace+0x17b/0x440 [ 73.255416][ T8496] f2fs_fill_super+0x3e48/0x7410 [ 73.260348][ T8496] ? vsprintf+0x30/0x30 [ 73.264503][ T8496] ? f2fs_commit_super+0x840/0x840 [ 73.269594][ T8496] ? wait_for_completion+0x260/0x260 [ 73.274888][ T8496] ? set_blocksize+0x1c1/0x400 [ 73.279672][ T8496] mount_bdev+0x32e/0x3f0 [ 73.283992][ T8496] ? f2fs_commit_super+0x840/0x840 [ 73.289089][ T8496] ? __bpf_trace_f2fs_fiemap+0x1b0/0x1b0 [ 73.294704][ T8496] legacy_get_tree+0x105/0x220 [ 73.299449][ T8496] vfs_get_tree+0x89/0x2f0 [ 73.303970][ T8496] path_mount+0x13ad/0x20c0 [ 73.308457][ T8496] ? strncpy_from_user+0x29e/0x3a0 [ 73.313553][ T8496] ? finish_automount+0xac0/0xac0 [ 73.318562][ T8496] ? getname_flags.part.0+0x1dd/0x4f0 [ 73.323922][ T8496] __x64_sys_mount+0x27f/0x300 [ 73.328667][ T8496] ? copy_mnt_ns+0xa60/0xa60 [ 73.333436][ T8496] ? syscall_enter_from_user_mode+0x1d/0x50 [ 73.339334][ T8496] do_syscall_64+0x2d/0x70 [ 73.343750][ T8496] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.349651][ T8496] RIP: 0033:0x44766a [ 73.353538][ T8496] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 73.373127][ T8496] RSP: 002b:00007fffd2a3bc68 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 73.381534][ T8496] RAX: ffffffffffffffda RBX: 00007fffd2a3bcc0 RCX: 000000000044766a [ 73.389505][ T8496] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffd2a3bc80 [ 73.397476][ T8496] RBP: 00007fffd2a3bc80 R08: 00007fffd2a3bcc0 R09: 00007fff00000015 [ 73.405432][ T8496] R10: 0000000000000000 R11: 0000000000000297 R12: 000000000000002f [ 73.413423][ T8496] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 73.422491][ T8496] Kernel Offset: disabled [ 73.429158][ T8496] Rebooting in 86400 seconds..