./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor800102475 <...> Warning: Permanently added '10.128.1.140' (ED25519) to the list of known hosts. execve("./syz-executor800102475", ["./syz-executor800102475"], 0x7ffc3e62a7f0 /* 10 vars */) = 0 brk(NULL) = 0x555555a5f000 brk(0x555555a5fd00) = 0x555555a5fd00 arch_prctl(ARCH_SET_FS, 0x555555a5f380) = 0 set_tid_address(0x555555a5f650) = 5013 set_robust_list(0x555555a5f660, 24) = 0 rseq(0x555555a5fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor800102475", 4096) = 27 getrandom("\x7a\x71\xc6\xe6\x51\xed\xed\xf0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a5fd00 brk(0x555555a80d00) = 0x555555a80d00 brk(0x555555a81000) = 0x555555a81000 mprotect(0x7fd13adb8000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 [ 61.939857][ T26] audit: type=1400 audit(1691171489.406:83): avc: denied { write } for pid=5010 comm="strace-static-x" path="pipe:[29500]" dev="pipefs" ino=29500 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 61.969343][ T5013] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5013 'syz-executor800' memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd1328f6000 [ 61.969587][ T26] audit: type=1400 audit(1691171489.436:84): avc: denied { execmem } for pid=5013 comm="syz-executor800" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 munmap(0x7fd1328f6000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 62.164121][ T26] audit: type=1400 audit(1691171489.636:85): avc: denied { read write } for pid=5013 comm="syz-executor800" name="loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 62.166741][ T5013] loop0: detected capacity change from 0 to 32768 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 62.195066][ T26] audit: type=1400 audit(1691171489.636:86): avc: denied { open } for pid=5013 comm="syz-executor800" path="/dev/loop0" dev="devtmpfs" ino=648 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 62.195111][ T26] audit: type=1400 audit(1691171489.636:87): avc: denied { ioctl } for pid=5013 comm="syz-executor800" path="/dev/loop0" dev="devtmpfs" ino=648 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 62.248822][ T26] audit: type=1400 audit(1691171489.716:88): avc: denied { mounton } for pid=5013 comm="syz-executor800" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 62.256373][ T5013] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 62.280061][ T5013] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 62.293062][ T5013] gfs2: fsid=syz:syz.s: journal 0 mapped with 3 extents in 0ms [ 62.340611][ T5013] gfs2: fsid=syz:syz.s: first mount done, others may mount [ 62.348713][ T5013] gfs2: fsid=syz:syz.s: ri_addr = 18 [ 62.348713][ T5013] ri_length = 1 [ 62.348713][ T5013] ri_data0 = 19 [ 62.348713][ T5013] ri_data = 2060 [ 62.348713][ T5013] ri_bitbytes = 514 [ 62.348713][ T5013] start=0 len=514 offset=128 [ 62.372428][ T5013] gfs2: fsid=syz:syz.s: R: n:18 f:00 b:0/0 i:0 q:0 r:0 e:0 [ 62.379944][ T5013] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 62.391660][ T5013] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 62.400064][ T5013] CPU: 0 PID: 5013 Comm: syz-executor800 Not tainted 6.5.0-rc4-syzkaller-00174-gc1a515d3c027 #0 [ 62.410477][ T5013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 62.420533][ T5013] RIP: 0010:gfs2_rgrp_dump+0x325/0x530 [ 62.426020][ T5013] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0e 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 73 68 49 8d 7e 0c 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a2 [ 62.445628][ T5013] RSP: 0018:ffffc900033cf410 EFLAGS: 00010203 [ 62.451700][ T5013] RAX: dffffc0000000000 RBX: ffff888078e15e58 RCX: 0000000000000000 [ 62.459676][ T5013] RDX: 0000000000000001 RSI: ffffffff83a1bd6d RDI: 000000000000000c [ 62.467647][ T5013] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 62.475614][ T5013] R10: 0000000000000040 R11: 0000000000000001 R12: ffffc900033cf488 [ 62.483583][ T5013] R13: ffff888078e15ed8 R14: 0000000000000000 R15: 0000000000000000 [ 62.491562][ T5013] FS: 0000555555a5f380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 62.500500][ T5013] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.507084][ T5013] CR2: 00000000005fdeb8 CR3: 0000000021f22000 CR4: 00000000003506f0 [ 62.515057][ T5013] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.523043][ T5013] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.531014][ T5013] Call Trace: [ 62.534287][ T5013] [ 62.537215][ T5013] ? die_addr+0x3b/0xa0 [ 62.541383][ T5013] ? exc_general_protection+0x154/0x230 [ 62.546954][ T5013] ? asm_exc_general_protection+0x26/0x30 [ 62.552680][ T5013] ? gfs2_rgrp_dump+0x2ed/0x530 [ 62.557542][ T5013] ? gfs2_rgrp_dump+0x325/0x530 [ 62.562406][ T5013] gfs2_consist_rgrpd_i+0xe3/0x1c0 [ 62.567524][ T5013] ? gfs2_consist_inode_i+0x150/0x150 [ 62.572910][ T5013] read_rindex_entry+0xf40/0x11c0 [ 62.577946][ T5013] ? gfs2_rbm_find+0x15f0/0x15f0 [ 62.582898][ T5013] ? gfs2_glock_nq+0x5cb/0x17b0 [ 62.587778][ T5013] gfs2_ri_update+0x73/0x500 [ 62.592400][ T5013] ? __gfs2_holder_init+0x18b/0x2f0 [ 62.597651][ T5013] gfs2_rindex_update+0x40a/0x480 [ 62.602724][ T5013] ? gfs2_ri_total+0x220/0x220 [ 62.607521][ T5013] ? init_inodes+0x20b1/0x2e30 [ 62.612294][ T5013] ? gfs2_lookup_simple+0xbc/0xf0 [ 62.617333][ T5013] ? gfs2_rename2+0xa0/0xa0 [ 62.621844][ T5013] ? lockdep_init_map_type+0x16d/0x7c0 [ 62.627516][ T5013] init_inodes+0x20b1/0x2e30 [ 62.632131][ T5013] ? end_bio_io_page+0xd0/0xd0 [ 62.636929][ T5013] ? init_sb+0x9d8/0x10e0 [ 62.641265][ T5013] ? vsprintf+0x30/0x30 [ 62.645431][ T5013] ? gfs2_fill_super+0x1a9e/0x2b10 [ 62.650549][ T5013] gfs2_fill_super+0x1a9e/0x2b10 [ 62.655494][ T5013] ? gfs2_reconfigure+0xee0/0xee0 [ 62.660524][ T5013] ? gfs2_fill_super+0x1736/0x2b10 [ 62.665639][ T5013] ? set_blocksize+0x2bd/0x360 [ 62.670411][ T5013] get_tree_bdev+0x43e/0x7d0 [ 62.675012][ T5013] ? gfs2_reconfigure+0xee0/0xee0 [ 62.680051][ T5013] gfs2_get_tree+0x4e/0x280 [ 62.684565][ T5013] vfs_get_tree+0x88/0x350 [ 62.688986][ T5013] path_mount+0x1492/0x1ed0 [ 62.693500][ T5013] ? lockdep_hardirqs_on+0x7d/0x100 [ 62.698741][ T5013] ? finish_automount+0xa50/0xa50 [ 62.703794][ T5013] ? putname+0x101/0x140 [ 62.708054][ T5013] __x64_sys_mount+0x293/0x310 [ 62.712830][ T5013] ? copy_mnt_ns+0xb60/0xb60 [ 62.717442][ T5013] ? lockdep_hardirqs_on+0x7d/0x100 [ 62.722695][ T5013] ? _raw_spin_unlock_irq+0x2e/0x50 [ 62.727942][ T5013] ? ptrace_notify+0xf4/0x130 [ 62.732644][ T5013] do_syscall_64+0x38/0xb0 [ 62.737077][ T5013] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.742983][ T5013] RIP: 0033:0x7fd13ad349ba [ 62.747401][ T5013] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 62.767013][ T5013] RSP: 002b:00007ffcd534cb18 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 62.775431][ T5013] RAX: ffffffffffffffda RBX: 00007ffcd534cb30 RCX: 00007fd13ad349ba [ 62.783410][ T5013] RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffcd534cb30 [ 62.791390][ T5013] RBP: 0000000000000004 R08: 00007ffcd534cb70 R09: 0000000000012511 [ 62.799362][ T5013] R10: 0000000000000002 R11: 0000000000000282 R12: 0000000000000002 [ 62.807347][ T5013] R13: 00007ffcd534cb70 R14: 0000000000000003 R15: 0000000001000000 [ 62.815339][ T5013] [ 62.818358][ T5013] Modules linked in: [ 62.822334][ T5013] ---[ end trace 0000000000000000 ]--- [ 62.824027][ T26] audit: type=1400 audit(1691171490.296:89): avc: denied { append } for pid=4451 comm="syslogd" name="messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 62.827783][ T5013] RIP: 0010:gfs2_rgrp_dump+0x325/0x530 [ 62.853922][ T26] audit: type=1400 audit(1691171490.296:90): avc: denied { open } for pid=4451 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 62.855313][ T5013] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0e 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 73 68 49 8d 7e 0c 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a2 [ 62.877904][ T26] audit: type=1400 audit(1691171490.296:91): avc: denied { getattr } for pid=4451 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=3 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 62.897255][ T5013] RSP: 0018:ffffc900033cf410 EFLAGS: 00010203 [ 62.897280][ T5013] RAX: dffffc0000000000 RBX: ffff888078e15e58 RCX: 0000000000000000 [ 62.897296][ T5013] RDX: 0000000000000001 RSI: ffffffff83a1bd6d RDI: 000000000000000c [ 62.897311][ T5013] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 62.897327][ T5013] R10: 0000000000000040 R11: 0000000000000001 R12: ffffc900033cf488 [ 62.897344][ T5013] R13: ffff888078e15ed8 R14: 0000000000000000 R15: 0000000000000000 [ 62.897359][ T5013] FS: 0000555555a5f380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 62.974798][ T5013] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.981397][ T5013] CR2: 00000000005fdeb8 CR3: 0000000021f22000 CR4: 00000000003506f0 [ 62.989374][ T5013] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.997384][ T5013] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.005382][ T5013] Kernel panic - not syncing: Fatal exception [ 63.011623][ T5013] Kernel Offset: disabled [ 63.015931][ T5013] Rebooting in 86400 seconds..