./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2339708465 <...> Warning: Permanently added '10.128.0.178' (ECDSA) to the list of known hosts. execve("./syz-executor2339708465", ["./syz-executor2339708465"], 0x7fffdf5ac9b0 /* 10 vars */) = 0 brk(NULL) = 0x555556c5e000 brk(0x555556c5ec40) = 0x555556c5ec40 arch_prctl(ARCH_SET_FS, 0x555556c5e300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2339708465", 4096) = 28 brk(0x555556c7fc40) = 0x555556c7fc40 brk(0x555556c80000) = 0x555556c80000 mprotect(0x7f9ae90fa000, 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 io_uring_setup(10458, {flags=0, 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|0x1000, sq_off={head=0, tail=64, ring_mask=256, ring_entries=264, flags=276, dropped=272, array=524608}, cq_off={head=128, tail=192, ring_mask=260, ring_entries=268, overflow=284, cqes=320, flags=280}}) = 3 mmap(0x206d3000, 590144, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE, 3, 0) = 0x206d3000 mmap(0x20ffa000, 1048576, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE, 3, 0x10000000) = 0x20ffa000 socketpair(AF_TIPC, SOCK_STREAM, 0, [4, 5]) = 0 socketpair(AF_TIPC, SOCK_STREAM, 0, [6, 7]) = 0 io_uring_setup(10458, {flags=0, 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|0x1000, sq_off={head=0, tail=64, ring_mask=256, ring_entries=264, flags=276, dropped=272, array=524608}, cq_off={head=128, tail=192, ring_mask=260, ring_entries=268, overflow=284, cqes=320, flags=280}}) = 8 mmap(0x206d3000, 590144, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE, 8, 0) = 0x206d3000 mmap(0x20ffa000, 1048576, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE, 8, 0x10000000) = 0x20ffa000 socket(AF_INET6, SOCK_DGRAM, IPPROTO_L2TP) = 9 io_uring_setup(7648, {flags=0, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=8192, cq_entries=16384, 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|0x1000, sq_off={head=0, tail=64, ring_mask=256, ring_entries=264, flags=276, dropped=272, array=262464}, cq_off={head=128, tail=192, ring_mask=260, ring_entries=268, overflow=284, cqes=320, flags=280}}) = 10 ioctl(-1, AUTOFS_DEV_IOCTL_PROTOSUBVER, 0x20000000) = -1 EBADF (Bad file descriptor) io_uring_register(10, IORING_REGISTER_PERSONALITY, NULL, 0) = 1 [ 51.095190][ T3614] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 51.106995][ T3614] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 51.115490][ T3614] CPU: 1 PID: 3614 Comm: syz-executor233 Not tainted 6.0.0-rc2-syzkaller-00044-gdf0219d11b6f #0 [ 51.126180][ T3614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 51.136504][ T3614] RIP: 0010:__io_sync_cancel+0x10d/0x1c0 [ 51.142172][ T3614] Code: 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 49 8b 86 f8 00 00 00 48 8d 1c d8 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 8e 00 00 00 48 8b 1b 48 8d 7d 08 48 b8 00 00 00 [ 51.161912][ T3614] RSP: 0018:ffffc900038ffc20 EFLAGS: 00010246 [ 51.168002][ T3614] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 51.176085][ T3614] RDX: 0000000000000000 RSI: ffffffff83f87914 RDI: ffff888146d8a0f8 [ 51.184075][ T3614] RBP: ffffc900038ffce0 R08: 0000000000000004 R09: 0000000000000000 [ 51.192052][ T3614] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 51.200053][ T3614] R13: ffff88801c9df800 R14: ffff888146d8a000 R15: 0000000000000000 [ 51.208027][ T3614] FS: 0000555556c5e300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 51.217091][ T3614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.224030][ T3614] CR2: 00000000005d84c8 CR3: 0000000070564000 CR4: 00000000003506e0 [ 51.232176][ T3614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.240147][ T3614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.248206][ T3614] Call Trace: [ 51.251593][ T3614] [ 51.254559][ T3614] io_sync_cancel+0x240/0x630 [ 51.259862][ T3614] ? init_hash_table+0xf0/0xf0 [ 51.264915][ T3614] ? trace_contention_end+0xea/0x150 [ 51.270213][ T3614] ? __mutex_lock+0x231/0x1350 [ 51.274996][ T3614] ? ptrace_stop.part.0+0x5ec/0xa80 [ 51.280266][ T3614] ? __do_sys_io_uring_register+0x1d5/0x1110 [ 51.286255][ T3614] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 51.292068][ T3614] ? rwlock_bug.part.0+0x90/0x90 [ 51.297443][ T3614] ? _raw_spin_lock_irq+0x41/0x50 [ 51.302481][ T3614] ? find_held_lock+0x2d/0x110 [ 51.307337][ T3614] __do_sys_io_uring_register+0x5c9/0x1110 [ 51.313153][ T3614] ? io_cqring_event_overflow+0x730/0x730 [ 51.318876][ T3614] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.324163][ T3614] ? lockdep_hardirqs_on+0x79/0x100 [ 51.329378][ T3614] ? _raw_spin_unlock_irq+0x2a/0x40 [ 51.334583][ T3614] ? ptrace_notify+0xfa/0x140 [ 51.339272][ T3614] do_syscall_64+0x35/0xb0 [ 51.343938][ T3614] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.349876][ T3614] RIP: 0033:0x7f9ae908dd29 [ 51.354309][ T3614] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 51.374108][ T3614] RSP: 002b:00007ffc2e5075e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab [ 51.382530][ T3614] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9ae908dd29 [ 51.390504][ T3614] RDX: 0000000020000000 RSI: 0000000000000018 RDI: 000000000000000a [ 51.398473][ T3614] RBP: 00007f9ae9051ed0 R08: 0000000000000000 R09: 0000000000000000 [ 51.406444][ T3614] R10: 0000000000000001 R11: 0000000000000246 R12: 00007f9ae9051f60 [ 51.414432][ T3614] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.422433][ T3614] [ 51.425466][ T3614] Modules linked in: [ 51.429911][ T3614] ---[ end trace 0000000000000000 ]--- [ 51.435419][ T3614] RIP: 0010:__io_sync_cancel+0x10d/0x1c0 [ 51.441243][ T3614] Code: 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 49 8b 86 f8 00 00 00 48 8d 1c d8 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 8e 00 00 00 48 8b 1b 48 8d 7d 08 48 b8 00 00 00 [ 51.461144][ T3614] RSP: 0018:ffffc900038ffc20 EFLAGS: 00010246 [ 51.467242][ T3614] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 51.475364][ T3614] RDX: 0000000000000000 RSI: ffffffff83f87914 RDI: ffff888146d8a0f8 [ 51.484748][ T3614] RBP: ffffc900038ffce0 R08: 0000000000000004 R09: 0000000000000000 [ 51.492867][ T3614] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 51.500904][ T3614] R13: ffff88801c9df800 R14: ffff888146d8a000 R15: 0000000000000000 [ 51.509076][ T3614] FS: 0000555556c5e300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 51.518118][ T3614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.524778][ T3614] CR2: 00007f622cf74268 CR3: 0000000070564000 CR4: 00000000003506f0 [ 51.532828][ T3614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.540898][ T3614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.548890][ T3614] Kernel panic - not syncing: Fatal exception [ 51.555105][ T3614] Kernel Offset: disabled [ 51.559436][ T3614] Rebooting in 86400 seconds..