./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor942538225 <...> Warning: Permanently added '10.128.0.99' (ECDSA) to the list of known hosts. execve("./syz-executor942538225", ["./syz-executor942538225"], 0x7ffec161b460 /* 10 vars */) = 0 brk(NULL) = 0x555555a81000 brk(0x555555a81c40) = 0x555555a81c40 arch_prctl(ARCH_SET_FS, 0x555555a81300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor942538225", 4096) = 27 brk(0x555555aa2c40) = 0x555555aa2c40 brk(0x555555aa3000) = 0x555555aa3000 mprotect(0x7f1c6abb3000, 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) = 0x7f1c626f4000 [ 41.864495][ T5019] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5019 'syz-executor942' 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(0x7f1c626f4000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 mount("/dev/loop0", "./file0", "jfs", MS_NOSUID|MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME|MS_LAZYTIME, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 ioctl(0, BTRFS_IOC_SEND, NULL) = -1 ENOTTY (Inappropriate ioctl for device) open(NULL, O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = -1 EFAULT (Bad address) mmap(0x20000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_LOCKED|1< [ 42.183287][ T5019] dump_stack_lvl+0x136/0x150 [ 42.187967][ T5019] __ubsan_handle_shift_out_of_bounds+0x221/0x5a0 [ 42.194373][ T5019] extAlloc.cold+0x8d/0x92 [ 42.198780][ T5019] ? jfs_ioc_trim+0x5c0/0x5c0 [ 42.203437][ T5019] ? down_write_nested+0x153/0x200 [ 42.208528][ T5019] ? find_held_lock+0x2d/0x110 [ 42.213268][ T5019] jfs_get_block+0x665/0xa90 [ 42.217845][ T5019] ? jfs_read_folio+0x20/0x20 [ 42.222517][ T5019] ? folio_flags.constprop.0+0x53/0x150 [ 42.228060][ T5019] ? do_raw_spin_unlock+0x175/0x230 [ 42.233252][ T5019] ? _raw_spin_unlock+0x28/0x40 [ 42.238099][ T5019] __block_write_begin_int+0x3b1/0x14a0 [ 42.243633][ T5019] ? jfs_read_folio+0x20/0x20 [ 42.248306][ T5019] ? invalidate_bh_lrus_cpu+0x170/0x170 [ 42.253839][ T5019] ? fault_in_readable+0x129/0x210 [ 42.258936][ T5019] ? folio_flags.constprop.0+0x53/0x150 [ 42.264474][ T5019] ? jfs_read_folio+0x20/0x20 [ 42.269143][ T5019] block_write_begin+0xb9/0x4d0 [ 42.273987][ T5019] jfs_write_begin+0x31/0xd0 [ 42.278569][ T5019] generic_perform_write+0x26b/0x5d0 [ 42.283855][ T5019] ? generic_file_readonly_mmap+0x190/0x190 [ 42.289743][ T5019] ? new_inode+0x280/0x280 [ 42.294150][ T5019] ? generic_write_checks_count+0x2c0/0x2c0 [ 42.300061][ T5019] __generic_file_write_iter+0x1f8/0x240 [ 42.305703][ T5019] generic_file_write_iter+0xe3/0x350 [ 42.311076][ T5019] vfs_write+0x981/0xda0 [ 42.315334][ T5019] ? kernel_write+0x680/0x680 [ 42.320029][ T5019] ? recalc_sigpending_tsk+0x18b/0x1d0 [ 42.325484][ T5019] ? find_held_lock+0x2d/0x110 [ 42.330244][ T5019] ? lock_downgrade+0x690/0x690 [ 42.335104][ T5019] ? __fget_light+0x201/0x270 [ 42.339780][ T5019] ksys_write+0x122/0x250 [ 42.344104][ T5019] ? __ia32_sys_read+0xb0/0xb0 [ 42.348861][ T5019] ? lockdep_hardirqs_on+0x7d/0x100 [ 42.354052][ T5019] ? _raw_spin_unlock_irq+0x2e/0x50 [ 42.359246][ T5019] ? ptrace_notify+0xfe/0x140 [ 42.363913][ T5019] do_syscall_64+0x39/0xb0 [ 42.368327][ T5019] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.374418][ T5019] RIP: 0033:0x7f1c6ab408d9 [ 42.378888][ T5019] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 42.398773][ T5019] RSP: 002b:00007ffecda49bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.407184][ T5019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1c6ab408d9 [ 42.415156][ T5019] RDX: 000000003af4701e RSI: 0000000020000240 RDI: 0000000000000004 [ 42.423134][ T5019] RBP: 00007f1c6ab00170 R08: 0000000000000000 R09: 0000000000000000 [ 42.431106][ T5019] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1c6ab00200 [ 42.439071][ T5019] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 42.447046][ T5019] [ 42.450530][ T5019] ================================================================================ [ 42.459834][ T5019] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 42.467007][ T5019] CPU: 0 PID: 5019 Comm: syz-executor942 Not tainted 6.4.0-syzkaller-12454-g1c7873e33645 #0 [ 42.477053][ T5019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 [ 42.487094][ T5019] Call Trace: [ 42.490355][ T5019] [ 42.493340][ T5019] dump_stack_lvl+0xd9/0x150 [ 42.497964][ T5019] panic+0x686/0x730 [ 42.501855][ T5019] ? panic_smp_self_stop+0xa0/0xa0 [ 42.506947][ T5019] ? syslog_print_all+0x3a0/0x3a0 [ 42.511956][ T5019] check_panic_on_warn+0xb1/0xc0 [ 42.516882][ T5019] __ubsan_handle_shift_out_of_bounds+0x249/0x5a0 [ 42.523307][ T5019] extAlloc.cold+0x8d/0x92 [ 42.527711][ T5019] ? jfs_ioc_trim+0x5c0/0x5c0 [ 42.532379][ T5019] ? down_write_nested+0x153/0x200 [ 42.537479][ T5019] ? find_held_lock+0x2d/0x110 [ 42.542224][ T5019] jfs_get_block+0x665/0xa90 [ 42.546796][ T5019] ? jfs_read_folio+0x20/0x20 [ 42.551455][ T5019] ? folio_flags.constprop.0+0x53/0x150 [ 42.556980][ T5019] ? do_raw_spin_unlock+0x175/0x230 [ 42.562164][ T5019] ? _raw_spin_unlock+0x28/0x40 [ 42.567027][ T5019] __block_write_begin_int+0x3b1/0x14a0 [ 42.572583][ T5019] ? jfs_read_folio+0x20/0x20 [ 42.577268][ T5019] ? invalidate_bh_lrus_cpu+0x170/0x170 [ 42.582802][ T5019] ? fault_in_readable+0x129/0x210 [ 42.587901][ T5019] ? folio_flags.constprop.0+0x53/0x150 [ 42.593456][ T5019] ? jfs_read_folio+0x20/0x20 [ 42.598128][ T5019] block_write_begin+0xb9/0x4d0 [ 42.602972][ T5019] jfs_write_begin+0x31/0xd0 [ 42.607573][ T5019] generic_perform_write+0x26b/0x5d0 [ 42.612861][ T5019] ? generic_file_readonly_mmap+0x190/0x190 [ 42.618753][ T5019] ? new_inode+0x280/0x280 [ 42.623166][ T5019] ? generic_write_checks_count+0x2c0/0x2c0 [ 42.629051][ T5019] __generic_file_write_iter+0x1f8/0x240 [ 42.634678][ T5019] generic_file_write_iter+0xe3/0x350 [ 42.640064][ T5019] vfs_write+0x981/0xda0 [ 42.644304][ T5019] ? kernel_write+0x680/0x680 [ 42.648972][ T5019] ? recalc_sigpending_tsk+0x18b/0x1d0 [ 42.654445][ T5019] ? find_held_lock+0x2d/0x110 [ 42.659210][ T5019] ? lock_downgrade+0x690/0x690 [ 42.664079][ T5019] ? __fget_light+0x201/0x270 [ 42.668754][ T5019] ksys_write+0x122/0x250 [ 42.673081][ T5019] ? __ia32_sys_read+0xb0/0xb0 [ 42.677840][ T5019] ? lockdep_hardirqs_on+0x7d/0x100 [ 42.683027][ T5019] ? _raw_spin_unlock_irq+0x2e/0x50 [ 42.688223][ T5019] ? ptrace_notify+0xfe/0x140 [ 42.692888][ T5019] do_syscall_64+0x39/0xb0 [ 42.697300][ T5019] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.703188][ T5019] RIP: 0033:0x7f1c6ab408d9 [ 42.707596][ T5019] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 42.727195][ T5019] RSP: 002b:00007ffecda49bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.735597][ T5019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1c6ab408d9 [ 42.743557][ T5019] RDX: 000000003af4701e RSI: 0000000020000240 RDI: 0000000000000004 [ 42.751520][ T5019] RBP: 00007f1c6ab00170 R08: 0000000000000000 R09: 0000000000000000 [ 42.759739][ T5019] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1c6ab00200 [ 42.767697][ T5019] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 42.775669][ T5019] [ 42.779268][ T5019] Kernel Offset: disabled [ 42.783742][ T5019] Rebooting in 86400 seconds..