./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor775729104 <...> Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts. execve("./syz-executor775729104", ["./syz-executor775729104"], 0x7ffc33167e10 /* 10 vars */) = 0 brk(NULL) = 0x555556ba2000 brk(0x555556ba2c40) = 0x555556ba2c40 arch_prctl(ARCH_SET_FS, 0x555556ba2300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor775729104", 4096) = 27 brk(0x555556bc3c40) = 0x555556bc3c40 brk(0x555556bc4000) = 0x555556bc4000 mprotect(0x7fb245d49000, 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./strace-static-x86_64: Process 3607 attached , child_tidptr=0x555556ba25d0) = 3607 [pid 3607] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3607] setsid() = 1 [pid 3607] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3607] unshare(CLONE_NEWNS) = 0 [pid 3607] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3607] unshare(CLONE_NEWIPC) = 0 [pid 3607] unshare(CLONE_NEWCGROUP) = 0 [pid 3607] unshare(CLONE_NEWUTS) = 0 [pid 3607] unshare(CLONE_SYSVSEM) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "16777216", 8) = 8 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "536870912", 9) = 9 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "8192", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3607] close(3) = 0 [pid 3607] getpid() = 1 [pid 3607] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 1a fe ff ff e8 5c 3b 3d fe e8 57 38 b6 fd e9 ca fe ff ff [ 40.661597][ T3608] RSP: 0018:ffffc900039df620 EFLAGS: 00010293 [ 40.667687][ T3608] RAX: ffffffff834a4e18 RBX: 0000000000000004 RCX: ffff888027883b00 [ 40.675707][ T3608] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 40.683662][ T3608] RBP: ffffc900039df710 R08: ffffffff834a4c21 R09: ffffffff83459693 [ 40.691686][ T3608] R10: 0000000000000002 R11: ffff888027883b00 R12: 0000000000000050 [ 40.699689][ T3608] R13: ffff88801d8bf000 R14: 1ffff9200073bed0 R15: ffff8880753ea160 [ 40.707708][ T3608] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 40.716668][ T3608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.723249][ T3608] CR2: 00007fb245cb0ea0 CR3: 0000000027537000 CR4: 00000000003506e0 [ 40.731240][ T3608] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.739227][ T3608] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.747229][ T3608] Call Trace: [ 40.750507][ T3608] [ 40.753429][ T3608] ? nilfs_sufile_mark_dirty+0x240/0x240 [ 40.759088][ T3608] ? nilfs_bmap_write+0x39/0xd0 [ 40.763939][ T3608] ? memcpy+0x3c/0x60 [ 40.767965][ T3608] nilfs_segctor_do_construct+0x4b4a/0x6fe0 [ 40.773896][ T3608] ? nilfs_transaction_unlock+0x210/0x210 [ 40.779636][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 40.785271][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 40.791307][ T3608] ? __up_read+0x690/0x690 [ 40.795749][ T3608] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 40.801193][ T3608] ? do_raw_spin_lock+0x148/0x360 [ 40.806246][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 40.811276][ T3608] ? do_raw_spin_unlock+0x134/0x8a0 [ 40.816502][ T3608] ? _raw_spin_unlock+0x24/0x40 [ 40.821373][ T3608] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 40.826876][ T3608] nilfs_segctor_construct+0x143/0x8d0 [ 40.832359][ T3608] ? trace_nilfs2_transaction_transition+0xc9/0x240 [ 40.839001][ T3608] nilfs_segctor_thread+0x534/0x1180 [ 40.844296][ T3608] ? __kthread_parkme+0xbd/0x1c0 [ 40.849304][ T3608] ? nilfs_construction_timeout+0x40/0x40 [ 40.855033][ T3608] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 40.860945][ T3608] ? _raw_spin_unlock+0x40/0x40 [ 40.865820][ T3608] ? wake_bit_function+0x240/0x240 [ 40.870920][ T3608] ? _raw_spin_unlock+0x40/0x40 [ 40.875807][ T3608] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 40.881788][ T3608] ? __kthread_parkme+0x166/0x1c0 [ 40.886841][ T3608] kthread+0x266/0x300 [ 40.890913][ T3608] ? nilfs_construction_timeout+0x40/0x40 [ 40.896667][ T3608] ? kthread_blkcg+0xd0/0xd0 [ 40.901257][ T3608] ret_from_fork+0x1f/0x30 [ 40.905712][ T3608] [ 40.908729][ T3608] Kernel panic - not syncing: panic_on_warn set ... [ 40.915303][ T3608] CPU: 1 PID: 3608 Comm: segctord Not tainted 6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0 [ 40.925080][ T3608] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 40.935114][ T3608] Call Trace: [ 40.938377][ T3608] [ 40.941290][ T3608] dump_stack_lvl+0x1b1/0x28e [ 40.945958][ T3608] ? fortify_panic+0x13/0x13 [ 40.950537][ T3608] ? panic+0x715/0x715 [ 40.954601][ T3608] ? vscnprintf+0x59/0x80 [ 40.958921][ T3608] ? nilfs_sufile_set_segment_usage+0x4c0/0x5c0 [ 40.965150][ T3608] panic+0x2d6/0x715 [ 40.969037][ T3608] ? __warn+0x131/0x220 [ 40.973186][ T3608] ? fb_is_primary_device+0xcc/0xcc [ 40.978392][ T3608] ? ret_from_fork+0x1f/0x30 [ 40.982977][ T3608] ? nilfs_sufile_set_segment_usage+0x4d8/0x5c0 [ 40.989207][ T3608] __warn+0x1fa/0x220 [ 40.993177][ T3608] ? nilfs_sufile_set_segment_usage+0x4d8/0x5c0 [ 40.999404][ T3608] report_bug+0x1b3/0x2d0 [ 41.003728][ T3608] handle_bug+0x3d/0x70 [ 41.007872][ T3608] exc_invalid_op+0x16/0x40 [ 41.012364][ T3608] asm_exc_invalid_op+0x16/0x20 [ 41.017202][ T3608] RIP: 0010:nilfs_sufile_set_segment_usage+0x4d8/0x5c0 [ 41.024038][ T3608] Code: 25 28 00 00 00 48 3b 84 24 a0 00 00 00 0f 85 fa 00 00 00 44 89 f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 68 3b 3d fe <0f> 0b e9 1a fe ff ff e8 5c 3b 3d fe e8 57 38 b6 fd e9 ca fe ff ff [ 41.043629][ T3608] RSP: 0018:ffffc900039df620 EFLAGS: 00010293 [ 41.049685][ T3608] RAX: ffffffff834a4e18 RBX: 0000000000000004 RCX: ffff888027883b00 [ 41.057643][ T3608] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 41.065602][ T3608] RBP: ffffc900039df710 R08: ffffffff834a4c21 R09: ffffffff83459693 [ 41.073559][ T3608] R10: 0000000000000002 R11: ffff888027883b00 R12: 0000000000000050 [ 41.081516][ T3608] R13: ffff88801d8bf000 R14: 1ffff9200073bed0 R15: ffff8880753ea160 [ 41.089483][ T3608] ? nilfs_mdt_read_block+0xb3/0x460 [ 41.094756][ T3608] ? nilfs_sufile_set_segment_usage+0x2e1/0x5c0 [ 41.100982][ T3608] ? nilfs_sufile_set_segment_usage+0x4d8/0x5c0 [ 41.107222][ T3608] ? nilfs_sufile_mark_dirty+0x240/0x240 [ 41.112841][ T3608] ? nilfs_bmap_write+0x39/0xd0 [ 41.117691][ T3608] ? memcpy+0x3c/0x60 [ 41.121670][ T3608] nilfs_segctor_do_construct+0x4b4a/0x6fe0 [ 41.127599][ T3608] ? nilfs_transaction_unlock+0x210/0x210 [ 41.133307][ T3608] ? rcu_read_lock_sched_held+0x87/0x110 [ 41.138930][ T3608] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 41.144912][ T3608] ? __up_read+0x690/0x690 [ 41.149322][ T3608] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 41.154769][ T3608] ? do_raw_spin_lock+0x148/0x360 [ 41.159780][ T3608] ? __lock_acquire+0x1f60/0x1f60 [ 41.164798][ T3608] ? do_raw_spin_unlock+0x134/0x8a0 [ 41.169988][ T3608] ? _raw_spin_unlock+0x24/0x40 [ 41.174825][ T3608] ? nilfs_segctor_confirm+0x24b/0x2d0 [ 41.180276][ T3608] nilfs_segctor_construct+0x143/0x8d0 [ 41.185730][ T3608] ? trace_nilfs2_transaction_transition+0xc9/0x240 [ 41.192398][ T3608] nilfs_segctor_thread+0x534/0x1180 [ 41.197673][ T3608] ? __kthread_parkme+0xbd/0x1c0 [ 41.202620][ T3608] ? nilfs_construction_timeout+0x40/0x40 [ 41.208334][ T3608] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 41.214213][ T3608] ? _raw_spin_unlock+0x40/0x40 [ 41.219052][ T3608] ? wake_bit_function+0x240/0x240 [ 41.224151][ T3608] ? _raw_spin_unlock+0x40/0x40 [ 41.228989][ T3608] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 41.234960][ T3608] ? __kthread_parkme+0x166/0x1c0 [ 41.239976][ T3608] kthread+0x266/0x300 [ 41.244037][ T3608] ? nilfs_construction_timeout+0x40/0x40 [ 41.249743][ T3608] ? kthread_blkcg+0xd0/0xd0 [ 41.254326][ T3608] ret_from_fork+0x1f/0x30 [ 41.258742][ T3608] [ 41.262024][ T3608] Kernel Offset: disabled [ 41.266405][ T3608] Rebooting in 86400 seconds..