./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2987338856 <...> Warning: Permanently added '10.128.0.44' (ED25519) to the list of known hosts. execve("./syz-executor2987338856", ["./syz-executor2987338856"], 0x7ffe35454360 /* 10 vars */) = 0 brk(NULL) = 0x555556744000 brk(0x555556744e00) = 0x555556744e00 arch_prctl(ARCH_SET_FS, 0x555556744480) = 0 set_tid_address(0x555556744750) = 5042 set_robust_list(0x555556744760, 24) = 0 rseq(0x555556744da0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2987338856", 4096) = 28 getrandom("\x77\xbd\x4e\xfc\xd6\x0c\xb8\x9b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556744e00 brk(0x555556765e00) = 0x555556765e00 brk(0x555556766000) = 0x555556766000 mprotect(0x7f28f8b41000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f28f8a9dc60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f28f8aa4ef0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f28f8a9dc60, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f28f8aa4ef0}, NULL, 8) = 0 io_uring_setup(18137, {flags=0, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=32768, cq_entries=65536, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0x2000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=1048640}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 3 mmap(NULL, 1179712, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f28f8973000 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- io_uring_setup(9465, {flags=IORING_SETUP_COOP_TASKRUN|0x10000, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=16384, cq_entries=32768, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0x2000, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40}}) = 4 mmap(NULL, 524352, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 4, 0) = 0x7f28f88f2000 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 4, 0x10000000) = 0x7f28f87f2000 openat(AT_FDCWD, "/proc/thread-self/fdinfo/4", O_RDWR) = 5 [ 89.748371][ T5042] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 89.760177][ T5042] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 89.768682][ T5042] CPU: 0 PID: 5042 Comm: syz-executor298 Not tainted 6.5.0-syzkaller-08894-gb97d64c72259 #0 [ 89.778754][ T5042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 89.788813][ T5042] RIP: 0010:io_uring_show_fdinfo+0x4dc/0x1d70 [ 89.794897][ T5042] Code: 24 10 42 8d 1c 38 48 8b 44 24 38 80 38 00 0f 85 4c 14 00 00 49 8b 84 24 d0 00 00 00 44 21 f3 48 8d 1c 98 48 89 d8 48 c1 e8 03 <42> 0f b6 14 28 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 89.814685][ T5042] RSP: 0018:ffffc900039cfc88 EFLAGS: 00010246 [ 89.820761][ T5042] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 89.828759][ T5042] RDX: ffff88802c8bd940 RSI: ffffffff841ce130 RDI: 0000000000000005 [ 89.836758][ T5042] RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 [ 89.844733][ T5042] R10: 0000000000000001 R11: ffffffff8a40008b R12: ffff8880261c6000 [ 89.852718][ T5042] R13: dffffc0000000000 R14: 0000000000003fff R15: 0000000000000000 [ 89.860695][ T5042] FS: 0000555556744480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 89.869633][ T5042] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.876226][ T5042] CR2: 0000000020000084 CR3: 00000000742a6000 CR4: 00000000003506f0 [ 89.884204][ T5042] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.892182][ T5042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.900278][ T5042] Call Trace: [ 89.903562][ T5042] [ 89.906499][ T5042] ? show_regs+0x8f/0xa0 [ 89.910756][ T5042] ? die_addr+0x4f/0xd0 [ 89.914927][ T5042] ? exc_general_protection+0x154/0x230 [ 89.920493][ T5042] ? asm_exc_general_protection+0x26/0x30 [ 89.926318][ T5042] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 89.932442][ T5042] ? io_uring_show_fdinfo+0x4b0/0x1d70 [ 89.937914][ T5042] ? io_uring_show_fdinfo+0x4dc/0x1d70 [ 89.943388][ T5042] ? io_uring_show_fdinfo+0x4b0/0x1d70 [ 89.948902][ T5042] ? io_sqpoll_wq_cpu_affinity+0xe0/0xe0 [ 89.954549][ T5042] ? spin_bug+0x1d0/0x1d0 [ 89.958903][ T5042] ? io_sqpoll_wq_cpu_affinity+0xe0/0xe0 [ 89.964547][ T5042] seq_show+0x587/0x8b0 [ 89.968721][ T5042] traverse.part.0.constprop.0+0xff/0x630 [ 89.974553][ T5042] ? reacquire_held_locks+0x4b0/0x4b0 [ 89.979961][ T5042] seq_lseek+0x2b6/0x450 [ 89.984279][ T5042] ksys_lseek+0x134/0x1a0 [ 89.988624][ T5042] do_syscall_64+0x38/0xb0 [ 89.993069][ T5042] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 89.998978][ T5042] RIP: 0033:0x7f28f8acdfe9 [ 90.003400][ T5042] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 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 [ 90.023017][ T5042] RSP: 002b:00007ffd990d0b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000008 [ 90.031450][ T5042] RAX: ffffffffffffffda RBX: 00007ffd990d0b50 RCX: 00007f28f8acdfe9 [ 90.039459][ T5042] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 90.047439][ T5042] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 90.055422][ T5042] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 90.063497][ T5042] R13: 00007ffd990d0db8 R14: 0000000000000001 R15: 0000000000000001 [ 90.071493][ T5042] [ 90.074523][ T5042] Modules linked in: [ 90.080993][ T5042] ---[ end trace 0000000000000000 ]--- [ 90.086504][ T5042] RIP: 0010:io_uring_show_fdinfo+0x4dc/0x1d70 [ 90.092660][ T5042] Code: 24 10 42 8d 1c 38 48 8b 44 24 38 80 38 00 0f 85 4c 14 00 00 49 8b 84 24 d0 00 00 00 44 21 f3 48 8d 1c 98 48 89 d8 48 c1 e8 03 <42> 0f b6 14 28 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 90.113138][ T5042] RSP: 0018:ffffc900039cfc88 EFLAGS: 00010246 [ 90.119432][ T5042] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 90.127444][ T5042] RDX: ffff88802c8bd940 RSI: ffffffff841ce130 RDI: 0000000000000005 [ 90.135444][ T5042] RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 [ 90.143469][ T5042] R10: 0000000000000001 R11: ffffffff8a40008b R12: ffff8880261c6000 [ 90.151582][ T5042] R13: dffffc0000000000 R14: 0000000000003fff R15: 0000000000000000 [ 90.159622][ T5042] FS: 0000555556744480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 90.168602][ T5042] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.175199][ T5042] CR2: 0000000020000084 CR3: 00000000742a6000 CR4: 00000000003506f0 [ 90.183217][ T5042] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.191419][ T5042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.199462][ T5042] Kernel panic - not syncing: Fatal exception [ 90.205809][ T5042] Kernel Offset: disabled [ 90.210143][ T5042] Rebooting in 86400 seconds..