./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3732077127 <...> Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts. execve("./syz-executor3732077127", ["./syz-executor3732077127"], 0x7ffc6a778eb0 /* 10 vars */) = 0 brk(NULL) = 0x5555571fa000 brk(0x5555571fac40) = 0x5555571fac40 arch_prctl(ARCH_SET_FS, 0x5555571fa300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3732077127", 4096) = 28 brk(0x55555721bc40) = 0x55555721bc40 brk(0x55555721c000) = 0x55555721c000 mprotect(0x7f9278623000, 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 ftruncate(3, 135266304) = 0 pwrite64(3, "\x96\x26\x7e\xf7\x32\x60\xfc\xee\xeb\x07\x19\x31\x33\x38\x51\x24\x0f\x0c\xfe\x4a\x9b\xcf\xfc\xc0\xfe\x06\x8a\x16\x8f\xb0\xe2\xb5\x99\x6a\x8f\xd1\x8d\xc6\x3d\xee\x79\x6d\xb9\x9a\x00\x06\x57\xc5\x87\xbf\x7a\xbe\x78\x95\x17\x12\xb3\x82\x64\x9d", 60, 4) = 60 pwrite64(3, "\x3c\x17\x7f\x52\x16\xfa\x70\x33\x4e\x8d\xac\x8e\xb3\x3b\xab\xdc\x52\xdb\x8a\x85\x5c\x4a\x39\xde\x6c\x89\xcf\x7a\x7b\x64\xa8\x1d\x63\x22\x86\x58\x77\x9d\xa0\x09\xbb\x42\xc5\xb7\x7f\x3c\x1a\xd1\x18\xa2\xf1\xfd\xde\x59\x9a\xec\xef\xe1\x99\x04\x53\x9e\xcf\x75\x5c\xd3\xba\x46\x53\x89\x9b\x0e\xe8\xd1\xbb\x70\xe2\x15\xb0\x8f\x31\xd2\x53\xaa\x9c\xd6\x47\xef\x13\x9a\xc0\x32\xb3\x11\xb0\xc8\xaf\x5a\xe4\x71"..., 122, 64) = 122 pwrite64(3, "\x7e\x32\xd3\x17\x72\xce\xa3\x71\x7c\x3a\x04\xb4\xfc\x4b\x66", 15, 186) = 15 pwrite64(3, "\xe2\xe1\xf5\xe0\x95\x21\xe9\x3c\x02\x00\x18\x00\x0c\x00\x24", 15, 1024) = 15 pwrite64(3, "\x06\x00\x00\x00\x00\x45\x42\x3f\x62\xba\xe6\xa3\x60\xf5\x17\xe4\x76\x06\x63\xdb\x33\x1e\xca\xfd\x0a\x59\x41\xc4\x0f\xca\xa2\xac\x40\x98\xae\xf0\xeb\x87\x24\x83\x4f\x3d\x66\x34\x8c\xbe\x08\xde\xe4\x10\xe3\x28\x1c\x00\xa8\x6a\x73\x62\x7e\x22\xdb\x7b\x6e\xdc\xc5\xd0\x59\xea\x3d\x39\x41\x97\x6b\xb0\x31\x42\x36\xae\x62\x4f\xc8\x36\xca\xb9\xa4\xc5\xdd\x24\x83\x33\x4a\xc9\x76\xac\xb5\x8e\x1f\x7b\xe5\x92"..., 181, 1152) = 181 pwrite64(3, "\x4a\x64\x80\xb1\x76\xcd\xf2\x09\xa5\xbd\x67\x01\xd5\x6a\x6c\x71\x60\xa8\x05\xf1\x6a\x4d\xe7\x3b\x89\xa0\xdd\x26\x87\xb6\xa6\x63\xef\xf9\xf9\x40\x7e\xd5\x69\xf2\x38\x94\xab\x02\x95\x34\xd0\xe6\x52\xd0\x40\xa3\xfd\xa3\x65\xc1\x73\x25\xe9\xf3\x89\x1c\x46\x07\xd0\xbc\x6a\x62\x80\x9c\x0c\x1b\xab\x0d\x03\x08\xd2\x76\x57\x40\x90\xec\x1f\x90\x59\x3b\x19\xa5\x77\x6d\x6f\xc4\x19\xb9\xe7\x6e\xe9\x8f\x59\x12"..., 172, 2047) = 172 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "erofs", 0, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 close(3) = 0 [ 34.705165][ T3611] loop0: detected capacity change from 0 to 264192 [ 34.714040][ T3611] erofs: (device loop0): mounted with root inode @ nid 36. [ 34.724843][ T3611] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 34.736589][ T3611] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 34.745008][ T3611] CPU: 0 PID: 3611 Comm: syz-executor373 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 [ 34.755081][ T3611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 34.765139][ T3611] RIP: 0010:erofs_bread+0x33/0x760 [ 34.770242][ T3611] Code: 53 48 83 ec 28 89 cb 41 89 d6 48 89 f5 49 89 fd 49 bc 00 00 00 00 00 fc ff df e8 78 b3 a5 fd 48 83 c5 30 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 0e 1e f9 fd 89 5c 24 04 4c 8b 7d [ 34.789837][ T3611] RSP: 0018:ffffc90003bdf2e0 EFLAGS: 00010206 [ 34.795884][ T3611] RAX: 0000000000000006 RBX: 0000000000000001 RCX: ffff888018de5880 [ 34.803836][ T3611] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003bdf4e0 [ 34.811786][ T3611] RBP: 0000000000000030 R08: ffffffff83e25022 R09: ffffc90003bdf4e0 [ 34.819752][ T3611] R10: fffff5200077be9f R11: 1ffff9200077be9c R12: dffffc0000000000 [ 34.827716][ T3611] R13: ffffc90003bdf4e0 R14: 000000007ec94954 R15: 000032487ec94954 [ 34.835674][ T3611] FS: 00005555571fa300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 34.844585][ T3611] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.851150][ T3611] CR2: 00007fa00d733260 CR3: 000000007d91f000 CR4: 00000000003506f0 [ 34.859104][ T3611] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.867053][ T3611] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.875002][ T3611] Call Trace: [ 34.878260][ T3611] [ 34.881171][ T3611] ? zero_user_segments+0x673/0x6e0 [ 34.886352][ T3611] z_erofs_do_read_page+0x219c/0x36c0 [ 34.891712][ T3611] ? z_erofs_pcluster_readmore+0x450/0x450 [ 34.897496][ T3611] ? rcu_read_lock_sched_held+0x5d/0x110 [ 34.903111][ T3611] ? PageHeadHuge+0x8a/0x1d0 [ 34.907680][ T3611] z_erofs_pcluster_readmore+0x292/0x450 [ 34.913291][ T3611] z_erofs_read_folio+0x28a/0x650 [ 34.918290][ T3611] ? __filemap_add_folio+0xd51/0x1980 [ 34.923641][ T3611] ? __filemap_add_folio+0xd51/0x1980 [ 34.928991][ T3611] ? z_erofs_rcu_callback+0x190/0x190 [ 34.934337][ T3611] ? rcu_read_lock_sched_held+0x5d/0x110 [ 34.939964][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 34.945935][ T3611] ? __mod_memcg_lruvec_state+0x164/0x200 [ 34.951637][ T3611] ? __lock_acquire+0x1f60/0x1f60 [ 34.956644][ T3611] ? rcu_read_lock_sched_held+0x5d/0x110 [ 34.962265][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 34.968230][ T3611] ? rcu_read_lock_sched_held+0x5d/0x110 [ 34.973844][ T3611] ? local_lock_release+0x96/0x170 [ 34.978958][ T3611] ? trace_lock_release+0x7b/0x1a0 [ 34.984049][ T3611] ? local_lock_release+0x96/0x170 [ 34.989141][ T3611] ? lock_release+0x81/0x820 [ 34.993712][ T3611] ? read_lock_is_recursive+0x10/0x10 [ 34.999060][ T3611] ? __filemap_add_folio+0xe20/0x1980 [ 35.004416][ T3611] ? folio_add_lru+0x480/0x960 [ 35.009161][ T3611] filemap_read_folio+0x187/0x7d0 [ 35.014167][ T3611] ? alloc_pages+0x520/0x7b0 [ 35.018741][ T3611] ? z_erofs_rcu_callback+0x190/0x190 [ 35.024094][ T3611] ? maybe_unlock_mmap_for_io+0x130/0x130 [ 35.029796][ T3611] ? folio_alloc+0x47/0x50 [ 35.034188][ T3611] ? filemap_alloc_folio+0x1ac/0x1c0 [ 35.039453][ T3611] do_read_cache_folio+0x2d3/0x790 [ 35.044558][ T3611] ? z_erofs_rcu_callback+0x190/0x190 [ 35.049931][ T3611] erofs_bread+0x20a/0x760 [ 35.054343][ T3611] erofs_namei+0x1bd/0xdb0 [ 35.058771][ T3611] ? erofs_dax_huge_fault+0x30/0x30 [ 35.063956][ T3611] ? lock_release+0x81/0x820 [ 35.068540][ T3611] ? rcu_read_lock_sched_held+0x5d/0x110 [ 35.074163][ T3611] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 35.080131][ T3611] ? do_raw_spin_lock+0x148/0x360 [ 35.085145][ T3611] erofs_lookup+0xd6/0x1b0 [ 35.089548][ T3611] ? erofs_namei+0xdb0/0xdb0 [ 35.094132][ T3611] ? __d_alloc+0x557/0x750 [ 35.098530][ T3611] ? _raw_spin_unlock+0x24/0x40 [ 35.103361][ T3611] ? d_alloc+0x193/0x1d0 [ 35.107598][ T3611] __lookup_hash+0x115/0x240 [ 35.112193][ T3611] filename_create+0x25f/0x4f0 [ 35.116953][ T3611] ? kern_path_create+0x180/0x180 [ 35.121960][ T3611] ? __lock_acquire+0x1f60/0x1f60 [ 35.126977][ T3611] ? check_heap_object+0x23e/0x820 [ 35.132087][ T3611] do_mkdirat+0xb5/0x550 [ 35.136771][ T3611] ? __check_object_size+0x15a/0x210 [ 35.142066][ T3611] ? vfs_mkdir+0x590/0x590 [ 35.146469][ T3611] ? getname_flags+0x1ea/0x4e0 [ 35.151227][ T3611] __x64_sys_mkdirat+0x85/0x90 [ 35.155976][ T3611] do_syscall_64+0x3d/0xb0 [ 35.160377][ T3611] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 35.166253][ T3611] RIP: 0033:0x7f92785b7039 [ 35.170733][ T3611] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 [ 35.190318][ T3611] RSP: 002b:00007ffd2273aad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 [ 35.198709][ T3611] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f92785b7039 [ 35.206658][ T3611] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 [ 35.214610][ T3611] RBP: 00007f9278576830 R08: 00005555571fa2c0 R09: 0000000000000000 [ 35.222559][ T3611] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f92785768c0 [ 35.230505][ T3611] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.238460][ T3611] [ 35.241455][ T3611] Modules linked in: [ 35.245895][ T3611] ---[ end trace 0000000000000000 ]--- [ 35.251365][ T3611] RIP: 0010:erofs_bread+0x33/0x760 [ 35.256518][ T3611] Code: 53 48 83 ec 28 89 cb 41 89 d6 48 89 f5 49 89 fd 49 bc 00 00 00 00 00 fc ff df e8 78 b3 a5 fd 48 83 c5 30 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 0e 1e f9 fd 89 5c 24 04 4c 8b 7d [ 35.276247][ T3611] RSP: 0018:ffffc90003bdf2e0 EFLAGS: 00010206 [ 35.282334][ T3611] RAX: 0000000000000006 RBX: 0000000000000001 RCX: ffff888018de5880 [ 35.292080][ T3611] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003bdf4e0 [ 35.300092][ T3611] RBP: 0000000000000030 R08: ffffffff83e25022 R09: ffffc90003bdf4e0 [ 35.308269][ T3611] R10: fffff5200077be9f R11: 1ffff9200077be9c R12: dffffc0000000000 [ 35.316267][ T3611] R13: ffffc90003bdf4e0 R14: 000000007ec94954 R15: 000032487ec94954 [ 35.324221][ T3611] FS: 00005555571fa300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 35.333237][ T3611] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.339839][ T3611] CR2: 00005593dd0b6000 CR3: 000000007d91f000 CR4: 00000000003506f0 [ 35.347827][ T3611] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.355817][ T3611] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.363770][ T3611] Kernel panic - not syncing: Fatal exception [ 35.369983][ T3611] Kernel Offset: disabled [ 35.374292][ T3611] Rebooting in 86400 seconds..