./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor592631366 <...> Warning: Permanently added '10.128.1.105' (ECDSA) to the list of known hosts. execve("./syz-executor592631366", ["./syz-executor592631366"], 0x7ffc8780f2e0 /* 10 vars */) = 0 brk(NULL) = 0x5555574b9000 brk(0x5555574b9c40) = 0x5555574b9c40 arch_prctl(ARCH_SET_FS, 0x5555574b9300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor592631366", 4096) = 27 brk(0x5555574dac40) = 0x5555574dac40 brk(0x5555574db000) = 0x5555574db000 mprotect(0x7f6fe3b2d000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6fdb674000 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"..., 262144) = 262144 munmap(0x7f6fdb674000, 262144) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 22.613274][ T30] audit: type=1400 audit(1671913603.119:62): avc: denied { execmem } for pid=421 comm="syz-executor592" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.618407][ T421] loop0: detected capacity change from 0 to 512 [ 22.635338][ T30] audit: type=1400 audit(1671913603.119:63): avc: denied { read write } for pid=421 comm="syz-executor592" name="loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.662674][ T30] audit: type=1400 audit(1671913603.119:64): avc: denied { open } for pid=421 comm="syz-executor592" path="/dev/loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.674954][ T421] EXT4-fs error (device loop0): ext4_map_blocks:596: inode #2: block 2: comm syz-executor592: lblock 0 mapped to illegal pblock 2 (length 1) [ 22.686715][ T30] audit: type=1400 audit(1671913603.119:65): avc: denied { ioctl } for pid=421 comm="syz-executor592" path="/dev/loop0" dev="devtmpfs" ino=111 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.701088][ T421] Kernel panic - not syncing: EXT4-fs (device loop0): panic forced after error [ 22.726173][ T30] audit: type=1400 audit(1671913603.139:66): avc: denied { mounton } for pid=421 comm="syz-executor592" path="/root/file0" dev="sda1" ino=1138 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.734767][ T421] CPU: 1 PID: 421 Comm: syz-executor592 Not tainted 5.15.78-syzkaller-00911-gc73b4619ad86 #0 [ 22.734784][ T421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 22.734792][ T421] Call Trace: [ 22.734797][ T421] [ 22.783022][ T421] dump_stack_lvl+0x151/0x1b7 [ 22.787535][ T421] ? bfq_pos_tree_add_move+0x43e/0x43e [ 22.792828][ T421] dump_stack+0x15/0x17 [ 22.796821][ T421] panic+0x258/0x727 [ 22.800554][ T421] ? ext4_handle_error+0x579/0x780 [ 22.805499][ T421] ? fb_is_primary_device+0xd4/0xd4 [ 22.810539][ T421] ? __kasan_check_read+0x11/0x20 [ 22.815393][ T421] ? ext4_commit_super+0x3b6/0x470 [ 22.820340][ T421] ext4_handle_error+0x772/0x780 [ 22.825123][ T421] __ext4_error_inode+0x236/0x4d0 [ 22.829973][ T421] ? _raw_write_unlock+0x2d/0x60 [ 22.834750][ T421] ? ext4_handle_error+0x780/0x780 [ 22.839698][ T421] ? __down_common+0x4f0/0x4f0 [ 22.844294][ T421] ? ext4_inode_block_valid+0x2eb/0x3f0 [ 22.849676][ T421] ext4_map_blocks+0x1214/0x1e20 [ 22.854450][ T421] ? ext4_issue_zeroout+0x260/0x260 [ 22.859484][ T421] ext4_getblk+0x19c/0x6f0 [ 22.863739][ T421] ? stack_trace_save+0x1f0/0x1f0 [ 22.868595][ T421] ? ext4_get_block_unwritten+0x40/0x40 [ 22.873977][ T421] ? arch_stack_walk+0xf8/0x140 [ 22.878670][ T421] ? __kasan_check_write+0x14/0x20 [ 22.883616][ T421] ? _raw_spin_lock_irqsave+0xf8/0x210 [ 22.888905][ T421] ext4_bread+0x2f/0x180 [ 22.892988][ T421] __ext4_read_dirblock+0xd7/0x8d0 [ 22.899256][ T421] ? stack_trace_snprint+0x100/0x100 [ 22.904370][ T421] dx_probe+0xcd/0x15a0 [ 22.908361][ T421] ? __kasan_slab_alloc+0xc4/0xe0 [ 22.913220][ T421] ? __kasan_slab_alloc+0xb2/0xe0 [ 22.918079][ T421] ? kmem_cache_alloc+0x189/0x2f0 [ 22.922945][ T421] ? __d_alloc+0x2d/0x6b0 [ 22.927107][ T421] ? d_alloc_parallel+0xe0/0x12b0 [ 22.931972][ T421] ? __lookup_slow+0x14e/0x400 [ 22.936567][ T421] ? lookup_one_unlocked+0x452/0x690 [ 22.941688][ T421] ? htree_dirblock_to_tree+0x1100/0x1100 [ 22.947242][ T421] ? ext4_fill_super+0x8cde/0x9650 [ 22.952536][ T421] ? legacy_get_tree+0xf0/0x190 [ 22.957227][ T421] ? vfs_get_tree+0x88/0x290 [ 22.961662][ T421] __ext4_find_entry+0x571/0x1b90 [ 22.966512][ T421] ? ext4_ci_compare+0x650/0x650 [ 22.971286][ T421] ? ext4_fname_setup_ci_filename+0x6b/0x490 [ 22.977097][ T421] ? generic_set_encrypted_ci_d_ops+0x90/0xf0 [ 22.983009][ T421] ext4_lookup+0x3de/0xb20 [ 22.987255][ T421] ? ext4_add_entry+0x1290/0x1290 [ 22.992114][ T421] __lookup_slow+0x2b3/0x400 [ 22.996540][ T421] ? lookup_one_len+0x6a0/0x6a0 [ 23.001230][ T421] lookup_one_unlocked+0x452/0x690 [ 23.006173][ T421] ? lookup_one+0x6d0/0x6d0 [ 23.010513][ T421] ? __proc_create+0x829/0xbb0 [ 23.015112][ T421] ? ext4_init_orphan_info+0x162/0x10d0 [ 23.020496][ T421] lookup_positive_unlocked+0x2c/0xb0 [ 23.025701][ T421] dquot_quota_on_mount+0x5a/0xe0 [ 23.030561][ T421] ext4_orphan_cleanup+0x56b/0x10b0 [ 23.035602][ T421] ? ext4_orphan_del+0xc30/0xc30 [ 23.040368][ T421] ? errseq_check_and_advance+0x62/0x130 [ 23.045837][ T421] ext4_fill_super+0x8cde/0x9650 [ 23.050616][ T421] ? ext4_mount+0x40/0x40 [ 23.054776][ T421] ? vscnprintf+0x80/0x80 [ 23.058941][ T421] ? mutex_unlock+0xa2/0x110 [ 23.063368][ T421] ? set_blocksize+0x208/0x3a0 [ 23.067969][ T421] ? sb_set_blocksize+0xb7/0xf0 [ 23.072658][ T421] mount_bdev+0x280/0x3b0 [ 23.076822][ T421] ? ext4_mount+0x40/0x40 [ 23.080988][ T421] ext4_mount+0x34/0x40 [ 23.084981][ T421] legacy_get_tree+0xf0/0x190 [ 23.089492][ T421] ? ext4_errno_to_code+0x140/0x140 [ 23.094528][ T421] vfs_get_tree+0x88/0x290 [ 23.098781][ T421] do_new_mount+0x289/0xad0 [ 23.103123][ T421] ? do_move_mount_old+0x160/0x160 [ 23.108074][ T421] ? security_capable+0xb2/0xd0 [ 23.112753][ T421] ? ns_capable+0x8a/0xf0 [ 23.116920][ T421] path_mount+0x60b/0x1050 [ 23.121958][ T421] __se_sys_mount+0x2d2/0x3c0 [ 23.126475][ T421] ? __x64_sys_mount+0xd0/0xd0 [ 23.131065][ T421] ? vfs_mkdir+0x580/0x580 [ 23.135320][ T421] __x64_sys_mount+0xbf/0xd0 [ 23.139745][ T421] do_syscall_64+0x44/0xd0 [ 23.144000][ T421] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.149728][ T421] RIP: 0033:0x7f6fe3ac1bca [ 23.153981][ T421] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 23.173421][ T421] RSP: 002b:00007ffe72713208 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 23.181665][ T421] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6fe3ac1bca [ 23.189478][ T421] RDX: 0000000020000440 RSI: 0000000020000480 RDI: 00007ffe72713220 [ 23.197291][ T421] RBP: 00007ffe72713220 R08: 00007ffe72713260 R09: 0000000000000474 [ 23.205098][ T421] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 23.214710][ T421] R13: 00005555574b92c0 R14: 0000000000000000 R15: 00007ffe72713260 [ 23.222542][ T421] [ 23.225550][ T421] Kernel Offset: disabled [ 23.229673][ T421] Rebooting in 86400 seconds..