./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1240323471 <...> DUID 00:04:ac:03:58:10:d0:76:5c:28:30:a7:8a:8b:4a:a3:06:e2 forked to background, child pid 4812 [ 30.371228][ T4813] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.381029][ T4813] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.221' (ECDSA) to the list of known hosts. execve("./syz-executor1240323471", ["./syz-executor1240323471"], 0x7ffd66171ae0 /* 10 vars */) = 0 brk(NULL) = 0x5555565e2000 brk(0x5555565e2c40) = 0x5555565e2c40 arch_prctl(ARCH_SET_FS, 0x5555565e2300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1240323471", 4096) = 28 brk(0x555556603c40) = 0x555556603c40 brk(0x555556604000) = 0x555556604000 mprotect(0x7fc3419bc000, 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 5235 attached , child_tidptr=0x5555565e25d0) = 5235 [pid 5235] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5235] setsid() = 1 [pid 5235] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5235] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5235] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5235] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5235] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5235] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5235] unshare(CLONE_NEWNS) = 0 [pid 5235] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5235] unshare(CLONE_NEWIPC) = 0 [pid 5235] unshare(CLONE_NEWCGROUP) = 0 [pid 5235] unshare(CLONE_NEWUTS) = 0 [pid 5235] unshare(CLONE_SYSVSEM) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "16777216", 8) = 8 [pid 5235] close(3) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "536870912", 9) = 9 [pid 5235] close(3) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1024", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "8192", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1024", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1024", 4) = 4 [pid 5235] close(3) = 0 [pid 5235] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5235] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5235] close(3) = 0 [pid 5235] getpid() = 1 [pid 5235] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 0d fe ff ff e8 7c 19 a0 fe e9 c6 fb ff ff e8 72 19 a0 fe [ 55.132052][ T5236] RSP: 0000:ffffc90003c8fa80 EFLAGS: 00010293 [ 55.138281][ T5236] RAX: 0000000000000000 RBX: ffff8880755ca160 RCX: 0000000000000000 [ 55.146347][ T5236] RDX: ffff888020769d40 RSI: ffffffff83294328 RDI: 0000000000000005 [ 55.154328][ T5236] RBP: ffff88802943e050 R08: 0000000000000005 R09: 0000000000000000 [ 55.162407][ T5236] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 55.170438][ T5236] R13: 1ffff92000791f55 R14: ffff8880755ca5e8 R15: 0000000063660a0b [ 55.178464][ T5236] FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 55.187451][ T5236] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.194115][ T5236] CR2: 000055d6d2508f88 CR3: 000000002b424000 CR4: 00000000003506e0 [ 55.202136][ T5236] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.210184][ T5236] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.218278][ T5236] Call Trace: [ 55.221568][ T5236] [ 55.224500][ T5236] ? nilfs_sufile_mark_dirty+0x230/0x230 [ 55.230202][ T5236] ? memcpy+0x39/0x60 [ 55.234205][ T5236] nilfs_segctor_do_construct+0x1f78/0x6af0 [ 55.240182][ T5236] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 55.246674][ T5236] ? do_raw_spin_lock+0x120/0x2a0 [ 55.251697][ T5236] ? rwlock_bug.part.0+0x90/0x90 [ 55.256702][ T5236] ? do_raw_spin_unlock+0x171/0x230 [ 55.261919][ T5236] ? _raw_spin_unlock+0x24/0x40 [ 55.267180][ T5236] nilfs_segctor_construct+0x8e3/0xb30 [ 55.272681][ T5236] ? rcu_read_lock_sched_held+0x3a/0x70 [ 55.278320][ T5236] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 55.285093][ T5236] nilfs_segctor_thread+0x3c3/0xf30 [ 55.290312][ T5236] ? nilfs_segctor_construct+0xb30/0xb30 [ 55.296016][ T5236] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 55.301855][ T5236] ? __kthread_parkme+0x15f/0x220 [ 55.306952][ T5236] ? nilfs_segctor_construct+0xb30/0xb30 [ 55.312613][ T5236] kthread+0x2e4/0x3a0 [ 55.316806][ T5236] ? kthread_complete_and_exit+0x40/0x40 [ 55.322470][ T5236] ret_from_fork+0x1f/0x30 [ 55.326988][ T5236] [ 55.330025][ T5236] Kernel panic - not syncing: panic_on_warn set ... [ 55.336599][ T5236] CPU: 1 PID: 5236 Comm: segctord Not tainted 6.1.0-rc3-next-20221104-syzkaller #0 [ 55.346823][ T5236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 55.356871][ T5236] Call Trace: [ 55.360138][ T5236] [ 55.363065][ T5236] dump_stack_lvl+0xcd/0x134 [ 55.367655][ T5236] panic+0x2c8/0x622 [ 55.371543][ T5236] ? panic_print_sys_info.part.0+0x110/0x110 [ 55.377521][ T5236] ? __warn.cold+0x24b/0x350 [ 55.382115][ T5236] ? nilfs_sufile_set_segment_usage+0x518/0x6a0 [ 55.388356][ T5236] __warn.cold+0x25c/0x350 [ 55.392784][ T5236] ? nilfs_sufile_set_segment_usage+0x518/0x6a0 [ 55.399033][ T5236] report_bug+0x1bc/0x210 [ 55.403374][ T5236] handle_bug+0x3c/0x70 [ 55.407534][ T5236] exc_invalid_op+0x14/0x40 [ 55.412037][ T5236] asm_exc_invalid_op+0x16/0x20 [ 55.416888][ T5236] RIP: 0010:nilfs_sufile_set_segment_usage+0x518/0x6a0 [ 55.423746][ T5236] Code: 8d 53 fe 48 8b 6c 24 48 48 85 ed 0f 85 5b ff ff ff e9 63 ff ff ff e8 f7 8c 53 fe e8 52 34 d7 fd e9 db fe ff ff e8 e8 8c 53 fe <0f> 0b e9 0d fe ff ff e8 7c 19 a0 fe e9 c6 fb ff ff e8 72 19 a0 fe [ 55.443354][ T5236] RSP: 0000:ffffc90003c8fa80 EFLAGS: 00010293 [ 55.449423][ T5236] RAX: 0000000000000000 RBX: ffff8880755ca160 RCX: 0000000000000000 [ 55.457393][ T5236] RDX: ffff888020769d40 RSI: ffffffff83294328 RDI: 0000000000000005 [ 55.465365][ T5236] RBP: ffff88802943e050 R08: 0000000000000005 R09: 0000000000000000 [ 55.473332][ T5236] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 [ 55.481306][ T5236] R13: 1ffff92000791f55 R14: ffff8880755ca5e8 R15: 0000000063660a0b [ 55.489287][ T5236] ? nilfs_sufile_set_segment_usage+0x518/0x6a0 [ 55.495543][ T5236] ? nilfs_sufile_mark_dirty+0x230/0x230 [ 55.501179][ T5236] ? memcpy+0x39/0x60 [ 55.505172][ T5236] nilfs_segctor_do_construct+0x1f78/0x6af0 [ 55.511090][ T5236] ? nilfs_segctor_abort_construction+0xe20/0xe20 [ 55.517504][ T5236] ? do_raw_spin_lock+0x120/0x2a0 [ 55.522533][ T5236] ? rwlock_bug.part.0+0x90/0x90 [ 55.527479][ T5236] ? do_raw_spin_unlock+0x171/0x230 [ 55.532684][ T5236] ? _raw_spin_unlock+0x24/0x40 [ 55.537542][ T5236] nilfs_segctor_construct+0x8e3/0xb30 [ 55.543007][ T5236] ? rcu_read_lock_sched_held+0x3a/0x70 [ 55.548565][ T5236] ? trace_nilfs2_transaction_transition+0x227/0x2e0 [ 55.555255][ T5236] nilfs_segctor_thread+0x3c3/0xf30 [ 55.560462][ T5236] ? nilfs_segctor_construct+0xb30/0xb30 [ 55.566102][ T5236] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 55.571914][ T5236] ? __kthread_parkme+0x15f/0x220 [ 55.576942][ T5236] ? nilfs_segctor_construct+0xb30/0xb30 [ 55.582577][ T5236] kthread+0x2e4/0x3a0 [ 55.586647][ T5236] ? kthread_complete_and_exit+0x40/0x40 [ 55.592548][ T5236] ret_from_fork+0x1f/0x30 [ 55.596987][ T5236] [ 55.600231][ T5236] Kernel Offset: disabled [ 55.604626][ T5236] Rebooting in 86400 seconds..