./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2837090079 <...> Warning: Permanently added '10.128.0.110' (ED25519) to the list of known hosts. execve("./syz-executor2837090079", ["./syz-executor2837090079"], 0x7ffccc9e07a0 /* 10 vars */) = 0 brk(NULL) = 0x555555bf4000 brk(0x555555bf4d00) = 0x555555bf4d00 arch_prctl(ARCH_SET_FS, 0x555555bf4380) = 0 set_tid_address(0x555555bf4650) = 5014 set_robust_list(0x555555bf4660, 24) = 0 rseq(0x555555bf4ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2837090079", 4096) = 28 getrandom("\x71\x35\xb3\xe3\x83\x98\x55\x6c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555bf4d00 brk(0x555555c15d00) = 0x555555c15d00 brk(0x555555c16000) = 0x555555c16000 mprotect(0x7f8d63571000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 [ 62.476562][ T26] audit: type=1400 audit(1691137359.238:83): avc: denied { write } for pid=5011 comm="strace-static-x" path="pipe:[30190]" dev="pipefs" ino=30190 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8d5b0af000 [ 62.514796][ T26] audit: type=1400 audit(1691137359.278:84): avc: denied { execmem } for pid=5014 comm="syz-executor283" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 62.516346][ T5014] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5014 'syz-executor283' 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(0x7f8d5b0af000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 62.733085][ T26] audit: type=1400 audit(1691137359.488:85): avc: denied { read write } for pid=5014 comm="syz-executor283" 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 [ 62.735173][ T5014] loop0: detected capacity change from 0 to 32768 [ 62.758265][ T26] audit: type=1400 audit(1691137359.488:86): avc: denied { open } for pid=5014 comm="syz-executor283" 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 [ 62.776357][ T5014] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 62.797403][ T5014] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 62.801137][ T26] audit: type=1400 audit(1691137359.498:87): avc: denied { ioctl } for pid=5014 comm="syz-executor283" 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 [ 62.811897][ T5014] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms [ 62.830704][ T26] audit: type=1400 audit(1691137359.528:88): avc: denied { mounton } for pid=5014 comm="syz-executor283" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 62.864157][ T5014] general protection fault, probably for non-canonical address 0xdffffc0000000097: 0000 [#1] PREEMPT SMP KASAN [ 62.875880][ T5014] KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] [ 62.884276][ T5014] CPU: 1 PID: 5014 Comm: syz-executor283 Not tainted 6.5.0-rc4-syzkaller-00051-g7bafbd4027ae #0 [ 62.894703][ T5014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 62.904764][ T5014] RIP: 0010:gfs2_rindex_update+0xbd/0x480 [ 62.910585][ T5014] Code: 0f 85 9c 03 00 00 49 8b 85 40 07 00 00 48 8d b8 b8 04 00 00 48 89 44 24 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 78 03 00 00 48 8b 44 24 30 48 8d 7c 24 60 b9 07 [ 62.932472][ T5014] RSP: 0018:ffffc9000337f350 EFLAGS: 00010202 [ 62.939652][ T5014] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 62.948047][ T5014] RDX: 0000000000000097 RSI: ffffffff83a14f31 RDI: 00000000000004b8 [ 62.956670][ T5014] RBP: ffffc9000337f460 R08: 0000000000000005 R09: 0000000000000000 [ 62.964643][ T5014] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 62.972622][ T5014] R13: ffff8880728c8000 R14: ffff888071b907b8 R15: 0000000000000000 [ 62.980595][ T5014] FS: 0000555555bf4380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 62.989531][ T5014] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.996120][ T5014] CR2: 000055beb942d468 CR3: 000000002e36e000 CR4: 00000000003506e0 [ 63.004098][ T5014] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.012092][ T5014] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.020086][ T5014] Call Trace: [ 63.023365][ T5014] [ 63.026298][ T5014] ? die_addr+0x3b/0xa0 [ 63.030471][ T5014] ? exc_general_protection+0x154/0x230 [ 63.036056][ T5014] ? asm_exc_general_protection+0x26/0x30 [ 63.041794][ T5014] ? gfs2_rindex_update+0x81/0x480 [ 63.046922][ T5014] ? gfs2_rindex_update+0xbd/0x480 [ 63.052054][ T5014] ? gfs2_ri_total+0x220/0x220 [ 63.056829][ T5014] ? gfs2_meta_buffer+0x195/0x3f0 [ 63.061873][ T5014] ? gfs2_journal_wipe+0xde0/0xde0 [ 63.067004][ T5014] ? __fillup_metapath+0x1c8/0x260 [ 63.072127][ T5014] punch_hole+0xe11/0x3800 [ 63.076557][ T5014] ? __wait_on_bit+0x121/0x170 [ 63.081335][ T5014] ? wait_for_completion_io_timeout+0x20/0x20 [ 63.087420][ T5014] ? out_of_line_wait_on_bit+0xdb/0x110 [ 63.092977][ T5014] ? __wait_on_bit+0x170/0x170 [ 63.097756][ T5014] ? __gfs2_iomap_get+0x1850/0x1850 [ 63.103517][ T5014] ? gfs2_meta_read+0x4b0/0x9d0 [ 63.108566][ T5014] ? map_id_range_down+0x2b6/0x3a0 [ 63.113696][ T5014] ? gfs2_journal_wipe+0xde0/0xde0 [ 63.118850][ T5014] ? gfs2_truncatei_resume+0x37/0x70 [ 63.124167][ T5014] gfs2_truncatei_resume+0x37/0x70 [ 63.129299][ T5014] inode_go_held+0x1bc/0x200 [ 63.133904][ T5014] ? inode_go_dump+0x240/0x240 [ 63.138679][ T5014] gfs2_instantiate+0x1dc/0x240 [ 63.143542][ T5014] gfs2_glock_wait+0x210/0x330 [ 63.148679][ T5014] ? gfs2_glock_async_wait+0x7f0/0x7f0 [ 63.154168][ T5014] gfs2_glock_nq+0xd9f/0x17b0 [ 63.158927][ T5014] ? __gfs2_holder_init+0x18b/0x2f0 [ 63.164159][ T5014] init_inodes+0x25c1/0x2e30 [ 63.168776][ T5014] ? end_bio_io_page+0xd0/0xd0 [ 63.173581][ T5014] ? gfs2_fill_super+0x1a9e/0x2b10 [ 63.178719][ T5014] ? init_sb+0x9d8/0x10e0 [ 63.183071][ T5014] ? vsprintf+0x30/0x30 [ 63.187340][ T5014] ? gfs2_fill_super+0x1a9e/0x2b10 [ 63.192471][ T5014] gfs2_fill_super+0x1a9e/0x2b10 [ 63.197422][ T5014] ? gfs2_reconfigure+0xee0/0xee0 [ 63.202474][ T5014] ? gfs2_fill_super+0x1736/0x2b10 [ 63.207597][ T5014] ? set_blocksize+0x2bd/0x360 [ 63.212471][ T5014] get_tree_bdev+0x43e/0x7d0 [ 63.217082][ T5014] ? gfs2_reconfigure+0xee0/0xee0 [ 63.223004][ T5014] gfs2_get_tree+0x4e/0x280 [ 63.227531][ T5014] vfs_get_tree+0x88/0x350 [ 63.231961][ T5014] path_mount+0x1492/0x1ed0 [ 63.236500][ T5014] ? lockdep_hardirqs_on+0x7d/0x100 [ 63.241722][ T5014] ? finish_automount+0xa50/0xa50 [ 63.246771][ T5014] ? putname+0x101/0x140 [ 63.251022][ T5014] __x64_sys_mount+0x293/0x310 [ 63.255797][ T5014] ? copy_mnt_ns+0xb60/0xb60 [ 63.260395][ T5014] ? lockdep_hardirqs_on+0x7d/0x100 [ 63.265693][ T5014] ? _raw_spin_unlock_irq+0x2e/0x50 [ 63.270996][ T5014] ? ptrace_notify+0xf4/0x130 [ 63.275679][ T5014] do_syscall_64+0x38/0xb0 [ 63.280113][ T5014] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 63.286034][ T5014] RIP: 0033:0x7f8d634ed8ca [ 63.290456][ T5014] 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 [ 63.310074][ T5014] RSP: 002b:00007ffe0a1e2ca8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 63.318494][ T5014] RAX: ffffffffffffffda RBX: 00007ffe0a1e2cc0 RCX: 00007f8d634ed8ca [ 63.326470][ T5014] RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffe0a1e2cc0 [ 63.334445][ T5014] RBP: 0000000000000004 R08: 00007ffe0a1e2d00 R09: 000000000001254b [ 63.342418][ T5014] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 63.350392][ T5014] R13: 00007ffe0a1e2d00 R14: 0000000000000003 R15: 0000000001000000 [ 63.358369][ T5014] [ 63.361384][ T5014] Modules linked in: [ 63.365748][ T5014] ---[ end trace 0000000000000000 ]--- [ 63.367093][ T26] audit: type=1400 audit(1691137360.128:89): 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 [ 63.371216][ T5014] RIP: 0010:gfs2_rindex_update+0xbd/0x480 [ 63.398284][ T26] audit: type=1400 audit(1691137360.128:90): 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 [ 63.399175][ T5014] Code: 0f 85 9c 03 00 00 49 8b 85 40 07 00 00 48 8d b8 b8 04 00 00 48 89 44 24 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 78 03 00 00 48 8b 44 24 30 48 8d 7c 24 60 b9 07 [ 63.422310][ T26] audit: type=1400 audit(1691137360.128:91): 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 [ 63.441651][ T5014] RSP: 0018:ffffc9000337f350 EFLAGS: 00010202 [ 63.470535][ T5014] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 63.478572][ T5014] RDX: 0000000000000097 RSI: ffffffff83a14f31 RDI: 00000000000004b8 [ 63.486639][ T5014] RBP: ffffc9000337f460 R08: 0000000000000005 R09: 0000000000000000 [ 63.494646][ T5014] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 63.502622][ T5014] R13: ffff8880728c8000 R14: ffff888071b907b8 R15: 0000000000000000 [ 63.510636][ T5014] FS: 0000555555bf4380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 63.519688][ T5014] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.526388][ T5014] CR2: 00000000005fdeb8 CR3: 000000002e36e000 CR4: 00000000003506f0 [ 63.534409][ T5014] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.542597][ T5014] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.550671][ T5014] Kernel panic - not syncing: Fatal exception [ 63.556952][ T5014] Kernel Offset: disabled [ 63.561272][ T5014] Rebooting in 86400 seconds..