./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2110764641 <...> Warning: Permanently added '10.128.0.202' (ED25519) to the list of known hosts. execve("./syz-executor2110764641", ["./syz-executor2110764641"], 0x7ffea454b6f0 /* 10 vars */) = 0 brk(NULL) = 0x555555ac2000 brk(0x555555ac2d00) = 0x555555ac2d00 arch_prctl(ARCH_SET_FS, 0x555555ac2380) = 0 set_tid_address(0x555555ac2650) = 5035 set_robust_list(0x555555ac2660, 24) = 0 rseq(0x555555ac2ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2110764641", 4096) = 28 getrandom("\xbf\x84\x84\xdf\x9e\x97\xa3\x5c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555ac2d00 brk(0x555555ae3d00) = 0x555555ae3d00 brk(0x555555ae4000) = 0x555555ae4000 mprotect(0x7f6f617d2000, 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) = 0x7f6f5931c000 [ 41.761189][ T5035] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5035 'syz-executor211' 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(0x7f6f5931c000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./bus", 0777) = 0 mount("/dev/loop0", "./bus", "jfs", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME|MS_LAZYTIME, "") = 0 openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 chdir("./bus") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 openat(AT_FDCWD, "blkio.bfq.io_service_bytes_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 41.862293][ T5035] loop0: detected capacity change from 0 to 32768 [ 42.009739][ T5035] ================================================================================ [ 42.019050][ T5035] UBSAN: shift-out-of-bounds in fs/jfs/jfs_extent.c:314:16 [ 42.026229][ T5035] shift exponent -1 is negative [ 42.031133][ T5035] CPU: 1 PID: 5035 Comm: syz-executor211 Not tainted 6.5.0-rc4-next-20230801-syzkaller #0 [ 42.041031][ T5035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 42.051073][ T5035] Call Trace: [ 42.054335][ T5035] [ 42.057251][ T5035] dump_stack_lvl+0x125/0x1b0 [ 42.061924][ T5035] __ubsan_handle_shift_out_of_bounds+0x27a/0x600 [ 42.068360][ T5035] extAlloc.cold+0x8b/0xc5 [ 42.072774][ T5035] ? jfs_ioc_trim+0x5c0/0x5c0 [ 42.077436][ T5035] ? down_write_nested+0x153/0x200 [ 42.082536][ T5035] ? lock_acquire+0x464/0x510 [ 42.087219][ T5035] ? lock_sync+0x190/0x190 [ 42.091643][ T5035] jfs_get_block+0x428/0xb20 [ 42.096251][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.100936][ T5035] ? folio_flags.constprop.0+0x56/0x150 [ 42.106474][ T5035] ? do_raw_spin_unlock+0x173/0x230 [ 42.111666][ T5035] ? _raw_spin_unlock+0x28/0x40 [ 42.116504][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.121170][ T5035] __block_write_begin_int+0x3c0/0x1470 [ 42.126706][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.131384][ T5035] ? invalidate_bh_lrus_cpu+0x170/0x170 [ 42.136926][ T5035] block_write_begin+0xb1/0x490 [ 42.141784][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.146477][ T5035] jfs_write_begin+0x31/0xd0 [ 42.151080][ T5035] generic_perform_write+0x278/0x600 [ 42.156371][ T5035] ? folio_add_wait_queue+0x1c0/0x1c0 [ 42.161758][ T5035] ? new_inode+0x270/0x270 [ 42.166190][ T5035] ? generic_write_checks_count+0x2d0/0x2d0 [ 42.172090][ T5035] __generic_file_write_iter+0x1f9/0x240 [ 42.177730][ T5035] generic_file_write_iter+0xe3/0x350 [ 42.183135][ T5035] vfs_write+0x650/0xe40 [ 42.187375][ T5035] ? kernel_write+0x6c0/0x6c0 [ 42.192048][ T5035] ? rcu_is_watching+0x12/0xb0 [ 42.196812][ T5035] ksys_write+0x12f/0x250 [ 42.201150][ T5035] ? __ia32_sys_read+0xb0/0xb0 [ 42.205908][ T5035] ? _raw_spin_unlock_irq+0x2e/0x50 [ 42.211105][ T5035] ? ptrace_notify+0xf4/0x130 [ 42.215779][ T5035] do_syscall_64+0x38/0xb0 [ 42.220193][ T5035] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.226087][ T5035] RIP: 0033:0x7f6f61759639 [ 42.230495][ T5035] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 42.250099][ T5035] RSP: 002b:00007ffddf154cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.258521][ T5035] RAX: ffffffffffffffda RBX: 00007ffddf154ec8 RCX: 00007f6f61759639 [ 42.266486][ T5035] RDX: 000000000208e24b RSI: 00000000200000c0 RDI: 0000000000000004 [ 42.274464][ T5035] RBP: 00007f6f617d2610 R08: 0000000000000000 R09: 00007ffddf154ec8 [ 42.282430][ T5035] R10: 0000000000005e08 R11: 0000000000000246 R12: 0000000000000001 [ 42.290395][ T5035] R13: 00007ffddf154eb8 R14: 0000000000000001 R15: 0000000000000001 [ 42.298368][ T5035] [ 42.301483][ T5035] ================================================================================ [ 42.310795][ T5035] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 42.317980][ T5035] CPU: 1 PID: 5035 Comm: syz-executor211 Not tainted 6.5.0-rc4-next-20230801-syzkaller #0 [ 42.327861][ T5035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 42.337907][ T5035] Call Trace: [ 42.341178][ T5035] [ 42.344100][ T5035] dump_stack_lvl+0xd9/0x1b0 [ 42.348796][ T5035] panic+0x6a4/0x750 [ 42.352713][ T5035] ? panic_smp_self_stop+0xa0/0xa0 [ 42.357995][ T5035] ? syslog_print_all+0x3f0/0x3f0 [ 42.363022][ T5035] check_panic_on_warn+0xab/0xb0 [ 42.367959][ T5035] __ubsan_handle_shift_out_of_bounds+0x2a2/0x600 [ 42.374384][ T5035] extAlloc.cold+0x8b/0xc5 [ 42.378804][ T5035] ? jfs_ioc_trim+0x5c0/0x5c0 [ 42.383478][ T5035] ? down_write_nested+0x153/0x200 [ 42.388586][ T5035] ? lock_acquire+0x464/0x510 [ 42.393261][ T5035] ? lock_sync+0x190/0x190 [ 42.397692][ T5035] jfs_get_block+0x428/0xb20 [ 42.402292][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.406975][ T5035] ? folio_flags.constprop.0+0x56/0x150 [ 42.412521][ T5035] ? do_raw_spin_unlock+0x173/0x230 [ 42.417723][ T5035] ? _raw_spin_unlock+0x28/0x40 [ 42.422574][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.427251][ T5035] __block_write_begin_int+0x3c0/0x1470 [ 42.432795][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.437489][ T5035] ? invalidate_bh_lrus_cpu+0x170/0x170 [ 42.443033][ T5035] block_write_begin+0xb1/0x490 [ 42.447880][ T5035] ? jfs_read_folio+0x20/0x20 [ 42.452557][ T5035] jfs_write_begin+0x31/0xd0 [ 42.457155][ T5035] generic_perform_write+0x278/0x600 [ 42.462439][ T5035] ? folio_add_wait_queue+0x1c0/0x1c0 [ 42.467804][ T5035] ? new_inode+0x270/0x270 [ 42.472224][ T5035] ? generic_write_checks_count+0x2d0/0x2d0 [ 42.478115][ T5035] __generic_file_write_iter+0x1f9/0x240 [ 42.483744][ T5035] generic_file_write_iter+0xe3/0x350 [ 42.489128][ T5035] vfs_write+0x650/0xe40 [ 42.493366][ T5035] ? kernel_write+0x6c0/0x6c0 [ 42.498051][ T5035] ? rcu_is_watching+0x12/0xb0 [ 42.502813][ T5035] ksys_write+0x12f/0x250 [ 42.507151][ T5035] ? __ia32_sys_read+0xb0/0xb0 [ 42.511909][ T5035] ? _raw_spin_unlock_irq+0x2e/0x50 [ 42.517117][ T5035] ? ptrace_notify+0xf4/0x130 [ 42.521789][ T5035] do_syscall_64+0x38/0xb0 [ 42.526208][ T5035] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.532121][ T5035] RIP: 0033:0x7f6f61759639 [ 42.536542][ T5035] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 [ 42.556232][ T5035] RSP: 002b:00007ffddf154cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.564725][ T5035] RAX: ffffffffffffffda RBX: 00007ffddf154ec8 RCX: 00007f6f61759639 [ 42.572688][ T5035] RDX: 000000000208e24b RSI: 00000000200000c0 RDI: 0000000000000004 [ 42.580650][ T5035] RBP: 00007f6f617d2610 R08: 0000000000000000 R09: 00007ffddf154ec8 [ 42.588614][ T5035] R10: 0000000000005e08 R11: 0000000000000246 R12: 0000000000000001 [ 42.596577][ T5035] R13: 00007ffddf154eb8 R14: 0000000000000001 R15: 0000000000000001 [ 42.604546][ T5035] [ 42.607742][ T5035] Kernel Offset: disabled [ 42.612048][ T5035] Rebooting in 86400 seconds..