./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1543169817 <...> Warning: Permanently added '10.128.0.135' (ECDSA) to the list of known hosts. execve("./syz-executor1543169817", ["./syz-executor1543169817"], 0x7fff3cb9c780 /* 10 vars */) = 0 brk(NULL) = 0x555555f47000 brk(0x555555f47c40) = 0x555555f47c40 arch_prctl(ARCH_SET_FS, 0x555555f47300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1543169817", 4096) = 28 brk(0x555555f68c40) = 0x555555f68c40 brk(0x555555f69000) = 0x555555f69000 mprotect(0x7fea23f0e000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555f475d0) = 5072 ./strace-static-x86_64: Process 5072 attached [pid 5072] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5072] setsid() = 1 [pid 5072] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5072] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5072] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5072] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5072] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5072] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5072] unshare(CLONE_NEWNS) = 0 [pid 5072] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5072] unshare(CLONE_NEWIPC) = 0 [pid 5072] unshare(CLONE_NEWCGROUP) = 0 [pid 5072] unshare(CLONE_NEWUTS) = 0 [pid 5072] unshare(CLONE_SYSVSEM) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "16777216", 8) = 8 [pid 5072] close(3) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "536870912", 9) = 9 [pid 5072] close(3) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1024", 4) = 4 [pid 5072] close(3) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "8192", 4) = 4 [pid 5072] close(3) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1024", 4) = 4 [pid 5072] close(3) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1024", 4) = 4 [pid 5072] close(3) = 0 [pid 5072] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5072] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5072] close(3) = 0 [pid 5072] getpid() = 1 [pid 5072] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 15 fe ff ff 41 bd fb ff ff ff e9 58 fa ff ff 4c 89 f7 e8 [ 52.478601][ T1026] RSP: 0018:ffffc90004aff4a0 EFLAGS: 00010293 [ 52.484734][ T1026] RAX: 0000000000000000 RBX: 1ffff9200095fe96 RCX: 0000000000000000 [ 52.492776][ T1026] RDX: ffff88801fad57c0 RSI: ffffffff8247222d RDI: 0000000000000005 [ 52.500762][ T1026] RBP: ffff88801e3401b0 R08: 0000000000000005 R09: 00000000000000f7 [ 52.508789][ T1026] R10: 0000000000000058 R11: 0000000000000000 R12: 0000000000000058 [ 52.516828][ T1026] R13: 0000000000000000 R14: ffff88801e340140 R15: ffffc90004aff4e0 [ 52.525122][ T1026] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 52.534178][ T1026] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.540784][ T1026] CR2: 000055d91d1cbb18 CR3: 000000000c48e000 CR4: 00000000003506f0 [ 52.549672][ T1026] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.558033][ T1026] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.566214][ T1026] Call Trace: [ 52.569540][ T1026] [ 52.572586][ T1026] ? hfsplus_cat_read_inode+0x9c0/0x9c0 [ 52.578198][ T1026] ? find_held_lock+0x2d/0x110 [ 52.583074][ T1026] ? hfsplus_ext_write_extent+0xcb/0x200 [ 52.588737][ T1026] ? lock_downgrade+0x6e0/0x6e0 [ 52.593764][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 52.599341][ T1026] ? trace_contention_end+0x173/0x1e0 [ 52.604799][ T1026] ? __mutex_lock+0x231/0x1360 [ 52.609604][ T1026] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 52.615564][ T1026] ? wait_for_completion_io_timeout+0x20/0x20 [ 52.621681][ T1026] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 52.627769][ T1026] ? do_raw_spin_lock+0x124/0x2b0 [ 52.633524][ T1026] ? rwlock_bug.part.0+0x90/0x90 [ 52.638499][ T1026] ? lock_acquire+0x32/0xc0 [ 52.643369][ T1026] ? do_writepages+0x3fe/0x640 [ 52.648217][ T1026] ? hfsplus_ext_write_extent+0xcb/0x200 [ 52.653966][ T1026] ? hfsplus_ext_cmp_key+0x300/0x300 [ 52.659282][ T1026] ? __writeback_single_inode+0x323/0x14d0 [ 52.665172][ T1026] ? lock_downgrade+0x6e0/0x6e0 [ 52.670074][ T1026] ? do_raw_spin_lock+0x124/0x2b0 [ 52.675376][ T1026] hfsplus_write_inode+0x93/0x4e0 [ 52.680473][ T1026] __writeback_single_inode+0xd38/0x14d0 [ 52.686213][ T1026] writeback_sb_inodes+0x54d/0xfb0 [ 52.691362][ T1026] ? sync_inode_metadata+0xe0/0xe0 [ 52.696575][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 52.702172][ T1026] ? queue_io+0x427/0x620 [ 52.706686][ T1026] wb_writeback+0x2c5/0xdd0 [ 52.711207][ T1026] ? __writeback_inodes_wb+0x280/0x280 [ 52.716756][ T1026] wb_workfn+0x2d4/0xdc0 [ 52.721021][ T1026] ? inode_wait_for_writeback+0x40/0x40 [ 52.726809][ T1026] ? lock_release+0x810/0x810 [ 52.731589][ T1026] ? process_one_work+0x8a1/0x1750 [ 52.736782][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 52.742386][ T1026] ? trace_lock_acquire+0x1f1/0x290 [ 52.747684][ T1026] process_one_work+0x9bf/0x1750 [ 52.752975][ T1026] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 52.758372][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 52.763995][ T1026] ? rwlock_bug.part.0+0x90/0x90 [ 52.768955][ T1026] ? lock_acquire+0x32/0xc0 [ 52.773564][ T1026] ? worker_thread+0x16d/0x1090 [ 52.778471][ T1026] worker_thread+0x669/0x1090 [ 52.783272][ T1026] ? __kthread_parkme+0x163/0x220 [ 52.788344][ T1026] ? process_one_work+0x1750/0x1750 [ 52.793674][ T1026] kthread+0x2e8/0x3a0 [ 52.797937][ T1026] ? kthread_complete_and_exit+0x40/0x40 [ 52.803636][ T1026] ret_from_fork+0x1f/0x30 [ 52.808092][ T1026] [ 52.811109][ T1026] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 52.818379][ T1026] CPU: 0 PID: 1026 Comm: kworker/u4:5 Not tainted 6.2.0-rc3-next-20230109-syzkaller #0 [ 52.828003][ T1026] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 52.838068][ T1026] Workqueue: writeback wb_workfn (flush-7:0) [ 52.844056][ T1026] Call Trace: [ 52.847327][ T1026] [ 52.850251][ T1026] dump_stack_lvl+0xd1/0x138 [ 52.854844][ T1026] panic+0x2cc/0x626 [ 52.858738][ T1026] ? panic_print_sys_info.part.0+0x112/0x112 [ 52.864727][ T1026] ? hfsplus_cat_write_inode+0x6dd/0x7a0 [ 52.870363][ T1026] check_panic_on_warn.cold+0x19/0x35 [ 52.875739][ T1026] __warn+0xf2/0x1a0 [ 52.879635][ T1026] ? hfsplus_cat_write_inode+0x6dd/0x7a0 [ 52.885270][ T1026] report_bug+0x1c0/0x210 [ 52.889601][ T1026] handle_bug+0x3c/0x70 [ 52.893755][ T1026] exc_invalid_op+0x18/0x50 [ 52.898283][ T1026] asm_exc_invalid_op+0x1a/0x20 [ 52.903130][ T1026] RIP: 0010:hfsplus_cat_write_inode+0x6dd/0x7a0 [ 52.909371][ T1026] Code: ff ff e8 46 72 88 ff e9 42 fa ff ff 4c 89 e7 e8 f9 71 88 ff e9 0b fc ff ff e8 2f 8b 3a ff 0f 0b e9 44 fc ff ff e8 23 8b 3a ff <0f> 0b e9 15 fe ff ff 41 bd fb ff ff ff e9 58 fa ff ff 4c 89 f7 e8 [ 52.929062][ T1026] RSP: 0018:ffffc90004aff4a0 EFLAGS: 00010293 [ 52.935142][ T1026] RAX: 0000000000000000 RBX: 1ffff9200095fe96 RCX: 0000000000000000 [ 52.943119][ T1026] RDX: ffff88801fad57c0 RSI: ffffffff8247222d RDI: 0000000000000005 [ 52.951089][ T1026] RBP: ffff88801e3401b0 R08: 0000000000000005 R09: 00000000000000f7 [ 52.959053][ T1026] R10: 0000000000000058 R11: 0000000000000000 R12: 0000000000000058 [ 52.967025][ T1026] R13: 0000000000000000 R14: ffff88801e340140 R15: ffffc90004aff4e0 [ 52.974999][ T1026] ? hfsplus_cat_write_inode+0x6dd/0x7a0 [ 52.980641][ T1026] ? hfsplus_cat_read_inode+0x9c0/0x9c0 [ 52.986192][ T1026] ? find_held_lock+0x2d/0x110 [ 52.990957][ T1026] ? hfsplus_ext_write_extent+0xcb/0x200 [ 52.996594][ T1026] ? lock_downgrade+0x6e0/0x6e0 [ 53.001455][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 53.007015][ T1026] ? trace_contention_end+0x173/0x1e0 [ 53.012403][ T1026] ? __mutex_lock+0x231/0x1360 [ 53.017173][ T1026] ? __mutex_unlock_slowpath+0x157/0x5e0 [ 53.022802][ T1026] ? wait_for_completion_io_timeout+0x20/0x20 [ 53.028865][ T1026] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 53.034844][ T1026] ? do_raw_spin_lock+0x124/0x2b0 [ 53.039864][ T1026] ? rwlock_bug.part.0+0x90/0x90 [ 53.044797][ T1026] ? lock_acquire+0x32/0xc0 [ 53.049295][ T1026] ? do_writepages+0x3fe/0x640 [ 53.054055][ T1026] ? hfsplus_ext_write_extent+0xcb/0x200 [ 53.059687][ T1026] ? hfsplus_ext_cmp_key+0x300/0x300 [ 53.064989][ T1026] ? __writeback_single_inode+0x323/0x14d0 [ 53.070801][ T1026] ? lock_downgrade+0x6e0/0x6e0 [ 53.075655][ T1026] ? do_raw_spin_lock+0x124/0x2b0 [ 53.080695][ T1026] hfsplus_write_inode+0x93/0x4e0 [ 53.085743][ T1026] __writeback_single_inode+0xd38/0x14d0 [ 53.091390][ T1026] writeback_sb_inodes+0x54d/0xfb0 [ 53.096517][ T1026] ? sync_inode_metadata+0xe0/0xe0 [ 53.101641][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 53.107184][ T1026] ? queue_io+0x427/0x620 [ 53.111512][ T1026] wb_writeback+0x2c5/0xdd0 [ 53.116034][ T1026] ? __writeback_inodes_wb+0x280/0x280 [ 53.121514][ T1026] wb_workfn+0x2d4/0xdc0 [ 53.125767][ T1026] ? inode_wait_for_writeback+0x40/0x40 [ 53.131324][ T1026] ? lock_release+0x810/0x810 [ 53.136000][ T1026] ? process_one_work+0x8a1/0x1750 [ 53.141127][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 53.146682][ T1026] ? trace_lock_acquire+0x1f1/0x290 [ 53.151902][ T1026] process_one_work+0x9bf/0x1750 [ 53.156872][ T1026] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 53.162266][ T1026] ? rcu_read_lock_sched_held+0x3e/0x70 [ 53.167835][ T1026] ? rwlock_bug.part.0+0x90/0x90 [ 53.172781][ T1026] ? lock_acquire+0x32/0xc0 [ 53.177372][ T1026] ? worker_thread+0x16d/0x1090 [ 53.182234][ T1026] worker_thread+0x669/0x1090 [ 53.186951][ T1026] ? __kthread_parkme+0x163/0x220 [ 53.191993][ T1026] ? process_one_work+0x1750/0x1750 [ 53.197204][ T1026] kthread+0x2e8/0x3a0 [ 53.201291][ T1026] ? kthread_complete_and_exit+0x40/0x40 [ 53.206929][ T1026] ret_from_fork+0x1f/0x30 [ 53.211359][ T1026] [ 53.214567][ T1026] Kernel Offset: disabled [ 53.218971][ T1026] Rebooting in 86400 seconds..