./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2962093474 <...> syzkaller login: [ 57.611351][ T29] kauditd_printk_skb: 43 callbacks suppressed [ 57.611369][ T29] audit: type=1400 audit(1717370760.804:78): avc: denied { transition } for pid=4940 comm="sshd" path="/bin/sh" dev="sda1" ino=89 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 57.639983][ T29] audit: type=1400 audit(1717370760.804:79): avc: denied { noatsecure } for pid=4940 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 57.660798][ T29] audit: type=1400 audit(1717370760.814:80): avc: denied { write } for pid=4940 comm="sh" path="pipe:[4215]" dev="pipefs" ino=4215 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 57.684694][ T29] audit: type=1400 audit(1717370760.814:81): avc: denied { rlimitinh } for pid=4940 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 57.704245][ T29] audit: type=1400 audit(1717370760.814:82): avc: denied { siginh } for pid=4940 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 57.955952][ T29] audit: type=1400 audit(1717370761.144:83): avc: denied { read } for pid=4521 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 58.825660][ T29] audit: type=1400 audit(1717370762.014:84): avc: denied { append } for pid=4521 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 [ 58.854702][ T29] audit: type=1400 audit(1717370762.014:85): avc: denied { open } for pid=4521 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 [ 58.877951][ T29] audit: type=1400 audit(1717370762.014:86): avc: denied { getattr } for pid=4521 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 Warning: Permanently added '10.128.0.223' (ED25519) to the list of known hosts. execve("./syz-executor2962093474", ["./syz-executor2962093474"], 0x7ffd690d9630 /* 10 vars */) = 0 brk(NULL) = 0x555581924000 brk(0x555581924d00) = 0x555581924d00 arch_prctl(ARCH_SET_FS, 0x555581924380) = 0 set_tid_address(0x555581924650) = 5091 set_robust_list(0x555581924660, 24) = 0 rseq(0x555581924ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2962093474", 4096) = 28 getrandom("\x03\x8d\xf2\x62\x24\xec\xd2\xed", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555581924d00 brk(0x555581945d00) = 0x555581945d00 brk(0x555581946000) = 0x555581946000 mprotect(0x7feea6696000, 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 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x555581924660, 24) = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5091] <... clone resumed>, child_tidptr=0x555581924650) = 5092 [ 74.358792][ T29] audit: type=1400 audit(1717370777.544:87): avc: denied { execmem } for pid=5091 comm="syz-executor296" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 74.382189][ T29] audit: type=1400 audit(1717370777.574:88): avc: denied { read write } for pid=5091 comm="syz-executor296" 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 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] write(1, "executing program\n", 18executing program ) = 18 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fee9e000000 [ 74.407431][ T29] audit: type=1400 audit(1717370777.574:89): avc: denied { open } for pid=5091 comm="syz-executor296" 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 [ 74.432833][ T29] audit: type=1400 audit(1717370777.574:90): avc: denied { ioctl } for pid=5091 comm="syz-executor296" path="/dev/loop0" dev="devtmpfs" ino=648 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5092] 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"..., 20699119) = 20699119 [pid 5092] munmap(0x7fee9e000000, 138412032) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5092] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5092] close(3) = 0 [pid 5092] close(4) = 0 [pid 5092] mkdir("./file2", 0777) = 0 [ 74.700622][ T5092] loop0: detected capacity change from 0 to 40427 [ 74.733543][ T29] audit: type=1400 audit(1717370777.924:91): avc: denied { mounton } for pid=5092 comm="syz-executor296" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 74.768493][ T5092] F2FS-fs (loop0): Found nat_bits in checkpoint [pid 5092] mount("/dev/loop0", "./file2", "f2fs", 0, "") = 0 [pid 5092] openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] chdir("./file2") = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 74.806156][ T5092] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5 [ 74.814967][ T29] audit: type=1400 audit(1717370778.004:92): avc: denied { mount } for pid=5092 comm="syz-executor296" name="/" dev="loop0" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 5092] openat(AT_FDCWD, "cpuacct.usage_sys", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5092] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [ 74.860508][ T29] audit: type=1400 audit(1717370778.044:93): avc: denied { write } for pid=5092 comm="syz-executor296" name="/" dev="loop0" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 74.882663][ T29] audit: type=1400 audit(1717370778.054:94): avc: denied { add_name } for pid=5092 comm="syz-executor296" name="cpuacct.usage_sys" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [pid 5092] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 [pid 5092] open("./bus", O_RDONLY) = 6 [pid 5092] ioctl(6, BLKROSET, [63]) = 0 [pid 5092] write(4, "#! ./file0\n", 11) = 11 [pid 5092] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000 [ 74.905094][ T29] audit: type=1400 audit(1717370778.054:95): avc: denied { create } for pid=5092 comm="syz-executor296" name="cpuacct.usage_sys" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 74.926766][ T29] audit: type=1400 audit(1717370778.054:96): avc: denied { read append open } for pid=5092 comm="syz-executor296" path="/root/file2/cpuacct.usage_sys" dev="loop0" ino=10 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 74.988756][ T5092] ------------[ cut here ]------------ [ 74.994561][ T5092] kernel BUG at fs/f2fs/file.c:105! [ 74.999802][ T5092] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 75.006744][ T5092] CPU: 0 PID: 5092 Comm: syz-executor296 Not tainted 6.10.0-rc1-syzkaller-00304-g83814698cf48 #0 [ 75.017241][ T5092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 75.027277][ T5092] RIP: 0010:f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.033447][ T5092] Code: e7 41 83 e7 01 4c 89 fe e8 84 39 c8 fd 4d 85 ff 0f 84 f6 f8 ff ff e8 46 3e c8 fd 49 83 ec 01 e9 eb f8 ff ff e8 38 3e c8 fd 90 <0f> 0b e8 30 3e c8 fd e8 5b 0a 3b fd e9 f0 f1 ff ff 48 89 4c 24 08 [ 75.053040][ T5092] RSP: 0018:ffffc9000316f828 EFLAGS: 00010293 [ 75.059090][ T5092] RAX: 0000000000000000 RBX: ffff88807aa48000 RCX: ffffffff83c58900 [ 75.067046][ T5092] RDX: ffff8880123a0000 RSI: ffffffff83c596b8 RDI: 0000000000000007 [ 75.075001][ T5092] RBP: ffffc9000316fb68 R08: 0000000000000007 R09: 0000000000000000 [ 75.082962][ T5092] R10: 0000000000000001 R11: ffffffff9393ffd0 R12: ffffc9000316f8a8 [ 75.090919][ T5092] R13: 0000000000000001 R14: ffffea00013dfbc0 R15: ffff88807aa484a8 [ 75.098875][ T5092] FS: 0000555581924380(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 [ 75.107796][ T5092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.114385][ T5092] CR2: 0000000020000280 CR3: 00000000791d4000 CR4: 00000000003506f0 [ 75.122360][ T5092] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.130325][ T5092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.138292][ T5092] Call Trace: [ 75.141567][ T5092] [ 75.144492][ T5092] ? show_regs+0x8c/0xa0 [ 75.148755][ T5092] ? die+0x36/0xa0 [ 75.152485][ T5092] ? do_trap+0x232/0x430 [ 75.156731][ T5092] ? f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.162286][ T5092] ? f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.167838][ T5092] ? do_error_trap+0xf4/0x230 [ 75.172518][ T5092] ? f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.178074][ T5092] ? handle_invalid_op+0x34/0x40 [ 75.183014][ T5092] ? f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.188564][ T5092] ? exc_invalid_op+0x2e/0x50 [ 75.193249][ T5092] ? asm_exc_invalid_op+0x1a/0x20 [ 75.198285][ T5092] ? f2fs_vm_page_mkwrite+0x8c0/0x1bb0 [ 75.203750][ T5092] ? f2fs_vm_page_mkwrite+0x1678/0x1bb0 [ 75.209307][ T5092] ? f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.214862][ T5092] ? f2fs_vm_page_mkwrite+0x1678/0x1bb0 [ 75.220420][ T5092] ? hlock_class+0x4e/0x130 [ 75.224927][ T5092] ? find_held_lock+0x2d/0x110 [ 75.229693][ T5092] ? __pfx_f2fs_vm_page_mkwrite+0x10/0x10 [ 75.235422][ T5092] ? __pfx_lock_release+0x10/0x10 [ 75.240455][ T5092] ? vm_normal_page+0x10e/0x270 [ 75.245311][ T5092] do_page_mkwrite+0x17d/0x390 [ 75.250076][ T5092] do_wp_page+0xc89/0x3380 [ 75.254500][ T5092] ? __pfx_lock_acquire+0x10/0x10 [ 75.259533][ T5092] ? __pfx_do_wp_page+0x10/0x10 [ 75.264390][ T5092] ? do_raw_spin_lock+0x12d/0x2c0 [ 75.269430][ T5092] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 75.274810][ T5092] __handle_mm_fault+0x2311/0x53f0 [ 75.279932][ T5092] ? __pfx_mt_find+0x10/0x10 [ 75.284519][ T5092] ? __pfx___handle_mm_fault+0x10/0x10 [ 75.289986][ T5092] ? find_vma+0xc0/0x140 [ 75.294232][ T5092] ? __pfx_find_vma+0x10/0x10 [ 75.298910][ T5092] handle_mm_fault+0x476/0xa00 [ 75.303691][ T5092] ? lock_mm_and_find_vma+0xa6/0x6a0 [ 75.308980][ T5092] do_user_addr_fault+0x2e5/0xe50 [ 75.314011][ T5092] exc_page_fault+0x5c/0xc0 [ 75.318523][ T5092] asm_exc_page_fault+0x26/0x30 [ 75.323376][ T5092] RIP: 0010:rep_movs_alternative+0x33/0x70 [ 75.329188][ T5092] Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb [ 75.348794][ T5092] RSP: 0018:ffffc9000316fdd8 EFLAGS: 00050212 [ 75.354861][ T5092] RAX: 00000000665cff9a RBX: 0000000000000010 RCX: 0000000000000010 [ 75.362833][ T5092] RDX: fffff5200062dfc8 RSI: ffffc9000316fe30 RDI: 0000000020000280 [ 75.370802][ T5092] RBP: 0000000020000280 R08: 0000000000000000 R09: fffff5200062dfc7 [ 75.378772][ T5092] R10: ffffc9000316fe3f R11: 0000000000000000 R12: ffffc9000316fe30 [ 75.386743][ T5092] R13: 0000000020000290 R14: 0000000000000000 R15: 0000000000000000 [ 75.394716][ T5092] _copy_to_user+0xac/0xc0 [ 75.399141][ T5092] put_timespec64+0xb6/0x120 [ 75.403739][ T5092] ? __pfx_put_timespec64+0x10/0x10 [ 75.408945][ T5092] ? ktime_get_real_ts64+0x16e/0x280 [ 75.414257][ T5092] __x64_sys_clock_gettime+0x1d5/0x270 [ 75.419719][ T5092] ? __pfx___x64_sys_clock_gettime+0x10/0x10 [ 75.425697][ T5092] ? lockdep_hardirqs_on+0x7c/0x110 [ 75.430907][ T5092] ? _raw_spin_unlock_irq+0x2e/0x50 [ 75.436109][ T5092] ? ptrace_notify+0xf1/0x130 [ 75.440790][ T5092] do_syscall_64+0xcd/0x250 [ 75.445296][ T5092] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.451200][ T5092] RIP: 0033:0x7feea661dc19 [ 75.455619][ T5092] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 75.475225][ T5092] RSP: 002b:00007ffeab229a38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4 [ 75.483636][ T5092] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feea661dc19 [ 75.491606][ T5092] RDX: 00007feea661dc19 RSI: 0000000020000280 RDI: 0000000000000000 [ 75.499572][ T5092] RBP: 00007feea66965f0 R08: 0000000000000000 R09: 0000000000000000 [ 75.507539][ T5092] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffeab229a70 [ 75.515505][ T5092] R13: 00007ffeab229c98 R14: 431bde82d7b634db R15: 00007feea666603b [ 75.523477][ T5092] [ 75.526488][ T5092] Modules linked in: [ 75.531037][ T5092] ---[ end trace 0000000000000000 ]--- [ 75.536512][ T5092] RIP: 0010:f2fs_vm_page_mkwrite+0x1679/0x1bb0 [ 75.542732][ T5092] Code: e7 41 83 e7 01 4c 89 fe e8 84 39 c8 fd 4d 85 ff 0f 84 f6 f8 ff ff e8 46 3e c8 fd 49 83 ec 01 e9 eb f8 ff ff e8 38 3e c8 fd 90 <0f> 0b e8 30 3e c8 fd e8 5b 0a 3b fd e9 f0 f1 ff ff 48 89 4c 24 08 [ 75.562368][ T5092] RSP: 0018:ffffc9000316f828 EFLAGS: 00010293 [ 75.568432][ T5092] RAX: 0000000000000000 RBX: ffff88807aa48000 RCX: ffffffff83c58900 [ 75.576435][ T5092] RDX: ffff8880123a0000 RSI: ffffffff83c596b8 RDI: 0000000000000007 [ 75.584448][ T5092] RBP: ffffc9000316fb68 R08: 0000000000000007 R09: 0000000000000000 [ 75.592437][ T5092] R10: 0000000000000001 R11: ffffffff9393ffd0 R12: ffffc9000316f8a8 [ 75.600434][ T5092] R13: 0000000000000001 R14: ffffea00013dfbc0 R15: ffff88807aa484a8 [ 75.608396][ T5092] FS: 0000555581924380(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 [ 75.617356][ T5092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.623969][ T5092] CR2: 0000000020000280 CR3: 00000000791d4000 CR4: 00000000003506f0 [ 75.631959][ T5092] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.639931][ T5092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.647920][ T5092] Kernel panic - not syncing: Fatal exception [ 75.654193][ T5092] Kernel Offset: disabled [ 75.658512][ T5092] Rebooting in 86400 seconds..