syzkaller syzkaller login: [ 11.116721][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 11.116730][ T23] audit: type=1400 audit(1650810209.510:71): avc: denied { transition } for pid=289 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 11.121257][ T23] audit: type=1400 audit(1650810209.510:72): avc: denied { write } for pid=289 comm="sh" path="pipe:[817]" dev="pipefs" ino=817 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 11.264844][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 11.267538][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 11.269834][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 11.674803][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 12.014825][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 15.014530][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 15.894164][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 16.444177][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts. executing program [ 17.816757][ T23] audit: type=1400 audit(1650810216.210:73): avc: denied { execmem } for pid=365 comm="syz-executor921" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 17.818970][ T365] ------------[ cut here ]------------ [ 17.836188][ T23] audit: type=1400 audit(1650810216.210:74): avc: denied { mounton } for pid=365 comm="syz-executor921" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 17.841626][ T365] kernel BUG at fs/attr.c:289! [ 17.864748][ T23] audit: type=1400 audit(1650810216.210:75): avc: denied { mount } for pid=365 comm="syz-executor921" name="/" dev="incremental-fs" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 17.869037][ T365] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 17.869047][ T365] CPU: 1 PID: 365 Comm: syz-executor921 Not tainted 5.10.110-syzkaller-01300-ge08dd85cc95e #0 [ 17.869052][ T365] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.869068][ T365] RIP: 0010:notify_change+0xe02/0xe10 [ 17.869078][ T365] Code: f0 ff e9 83 fb ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 82 f7 ff ff 4c 89 e7 e8 a8 97 f0 ff e9 75 f7 ff ff e8 8e d3 b6 ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 [ 17.869092][ T365] RSP: 0018:ffffc90000bf7b48 EFLAGS: 00010293 [ 17.892855][ T23] audit: type=1400 audit(1650810216.210:76): avc: denied { setattr } for pid=365 comm="syz-executor921" name="file0" dev="incremental-fs" ino=1138 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 17.898526][ T365] [ 17.898535][ T365] RAX: ffffffff81b5db92 RBX: 0000000000001843 RCX: ffff888106dd62c0 [ 17.898540][ T365] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 17.898547][ T365] RBP: ffffc90000bf7bc8 R08: ffffffff81b5d33d R09: ffffc90000bf7ac0 [ 17.898560][ T365] R10: fffff5200017ef5a R11: 1ffff9200017ef58 R12: ffffc90000bf7d60 [ 18.007294][ T365] R13: 0000000000000001 R14: ffff88811a10c660 R15: dffffc0000000000 [ 18.015249][ T365] FS: 00005555570d0300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 18.024208][ T365] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.030785][ T365] CR2: 0000000020000140 CR3: 0000000107596000 CR4: 00000000003506a0 [ 18.038745][ T365] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.046726][ T365] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.054669][ T365] Call Trace: [ 18.057940][ T365] incfs_setattr+0x229/0x3a0 [ 18.062509][ T365] ? file_release+0x180/0x180 [ 18.067162][ T365] notify_change+0xb76/0xe10 [ 18.071732][ T365] chown_common+0x3a1/0x660 [ 18.076211][ T365] ? __ia32_sys_chmod+0x190/0x190 [ 18.081211][ T365] ? mnt_want_write+0x1b8/0x290 [ 18.086038][ T365] do_fchownat+0x175/0x250 [ 18.090431][ T365] ? chown_common+0x660/0x660 [ 18.095089][ T365] ? debug_smp_processor_id+0x17/0x20 [ 18.100520][ T365] __x64_sys_lchown+0x85/0x90 [ 18.105171][ T365] do_syscall_64+0x34/0x70 [ 18.109567][ T365] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.115432][ T365] RIP: 0033:0x7ffbdebe1079 [ 18.119829][ T365] 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 [ 18.139410][ T365] RSP: 002b:00007ffeac5da878 EFLAGS: 00000246 ORIG_RAX: 000000000000005e [ 18.147799][ T365] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007ffbdebe1079 [ 18.155745][ T365] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 00000000200002c0 [ 18.163698][ T365] RBP: 2f30656c69662f2e R08: 0000000000000000 R09: 0000000000000000 [ 18.171646][ T365] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffbdeba50f0 [ 18.179594][ T365] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 18.187544][ T365] Modules linked in: [ 18.191572][ T365] ---[ end trace fd4ac995b625cb45 ]--- [ 18.197121][ T365] RIP: 0010:notify_change+0xe02/0xe10 [ 18.202497][ T365] Code: f0 ff e9 83 fb ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 82 f7 ff ff 4c 89 e7 e8 a8 97 f0 ff e9 75 f7 ff ff e8 8e d3 b6 ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 [ 18.222308][ T365] RSP: 0018:ffffc90000bf7b48 EFLAGS: 00010293 [ 18.228519][ T365] RAX: ffffffff81b5db92 RBX: 0000000000001843 RCX: ffff888106dd62c0 [ 18.236568][ T365] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 18.244564][ T365] RBP: ffffc90000bf7bc8 R08: ffffffff81b5d33d R09: ffffc90000bf7ac0 [ 18.252517][ T365] R10: fffff5200017ef5a R11: 1ffff9200017ef58 R12: ffffc90000bf7d60 [ 18.260524][ T365] R13: 0000000000000001 R14: ffff88811a10c660 R15: dffffc0000000000 [ 18.268504][ T365] FS: 00005555570d0300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 18.277567][ T365] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.284214][ T365] CR2: 0000000020000140 CR3: 0000000107596000 CR4: 00000000003506a0 [ 18.292184][ T365] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.300187][ T365] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.308190][ T365] Kernel panic - not syncing: Fatal exception [ 18.314328][ T365] Kernel Offset: disabled [ 18.318636][ T365] Rebooting in 86400 seconds..