./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4262222098 <...> Warning: Permanently added '10.128.0.156' (ED25519) to the list of known hosts. execve("./syz-executor4262222098", ["./syz-executor4262222098"], 0x7fffaca574f0 /* 10 vars */) = 0 brk(NULL) = 0x555556dd9000 brk(0x555556dd9d00) = 0x555556dd9d00 arch_prctl(ARCH_SET_FS, 0x555556dd9380) = 0 set_tid_address(0x555556dd9650) = 5044 set_robust_list(0x555556dd9660, 24) = 0 rseq(0x555556dd9ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4262222098", 4096) = 28 getrandom("\xdb\x87\x0f\xb4\x7c\x22\x00\xf4", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556dd9d00 brk(0x555556dfad00) = 0x555556dfad00 brk(0x555556dfb000) = 0x555556dfb000 mprotect(0x7f7d98f19000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7d90a64000 [ 71.885993][ T5044] syz-executor426[5044]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 munmap(0x7f7d90a64000, 16777216) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 72.075345][ T5044] loop0: detected capacity change from 0 to 32768 [ 72.089135][ T5044] BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 scanned by syz-executor426 (5044) [ 72.111719][ T5044] BTRFS info (device loop0): using sha256 (sha256-avx2) checksum algorithm [ 72.120767][ T5044] BTRFS info (device loop0): using free space tree mount("/dev/loop0", "./file0", "btrfs", MS_NODIRATIME, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 ioctl(3, BTRFS_IOC_SUBVOL_SETFLAGS, BTRFS_SUBVOL_RDONLY) = 0 openat(AT_FDCWD, "/dev/ppp", O_RDONLY) = 4 [ 72.147324][ T5044] BTRFS info (device loop0): enabling ssd optimizations [ 72.154402][ T5044] BTRFS info (device loop0): auto enabling async discard [ 72.207239][ T5044] ------------[ cut here ]------------ [ 72.213073][ T5044] WARNING: CPU: 1 PID: 5044 at fs/read_write.c:504 __kernel_write_iter+0x69b/0x7c0 [ 72.222577][ T5044] Modules linked in: [ 72.226516][ T5044] CPU: 1 PID: 5044 Comm: syz-executor426 Not tainted 6.6.0-rc2-syzkaller-00309-g8018e02a8703 #0 [ 72.237044][ T5044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 72.247446][ T5044] RIP: 0010:__kernel_write_iter+0x69b/0x7c0 [ 72.253492][ T5044] Code: 25 28 00 00 00 48 3b 84 24 e0 00 00 00 0f 85 2c 01 00 00 4c 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 35 1f 96 ff <0f> 0b 49 c7 c6 f7 ff ff ff eb a5 e8 25 1f 96 ff 4c 8b 74 24 18 eb [ 72.274001][ T5044] RSP: 0018:ffffc90003b2f700 EFLAGS: 00010293 [ 72.280182][ T5044] RAX: ffffffff81f7eb3b RBX: 00000000000a001d RCX: ffff888022d23b80 [ 72.288283][ T5044] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 72.296298][ T5044] RBP: ffffc90003b2f830 R08: ffffffff81f7e57c R09: 0000000000000000 [ 72.304418][ T5044] R10: ffffc90003b2f8a0 R11: fffff52000765f19 R12: 1ffff92000765eec [ 72.312605][ T5044] R13: 1ffff1100383cb7a R14: ffff88801c1e5b80 R15: dffffc0000000000 [ 72.320692][ T5044] FS: 0000555556dd9380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 72.329748][ T5044] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.336380][ T5044] CR2: 00000000005fdeb8 CR3: 000000007bc99000 CR4: 00000000003506e0 [ 72.344547][ T5044] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.352640][ T5044] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.360729][ T5044] Call Trace: [ 72.364078][ T5044] [ 72.367040][ T5044] ? __warn+0x162/0x4a0 [ 72.371350][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.376698][ T5044] ? report_bug+0x2b3/0x500 [ 72.381325][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.386780][ T5044] ? handle_bug+0x3d/0x70 [ 72.391351][ T5044] ? exc_invalid_op+0x1a/0x50 [ 72.396079][ T5044] ? asm_exc_invalid_op+0x1a/0x20 [ 72.401229][ T5044] ? __kernel_write_iter+0xdc/0x7c0 [ 72.406483][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.411929][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.417288][ T5044] ? verify_lock_unused+0x140/0x140 [ 72.422615][ T5044] ? vfs_read+0xb00/0xb00 [ 72.427216][ T5044] ? iov_iter_kvec+0x4e/0x1e0 [ 72.432097][ T5044] kernel_write+0x1d8/0x350 [ 72.436653][ T5044] ? __kernel_write+0x170/0x170 [ 72.441585][ T5044] ? btrfs_wait_ordered_extents+0xdbc/0xe20 [ 72.447522][ T5044] ? send_subvol+0x11c/0x49b0 [ 72.452302][ T5044] send_subvol+0x1ab/0x49b0 [ 72.456852][ T5044] ? __mutex_unlock_slowpath+0x21c/0x750 [ 72.462584][ T5044] ? btrfs_wait_ordered_extents+0xc34/0xe20 [ 72.468567][ T5044] ? mutex_unlock+0x10/0x10 [ 72.473088][ T5044] ? do_raw_spin_unlock+0x13b/0x8b0 [ 72.478531][ T5044] ? ensure_commit_roots_uptodate+0x280/0x280 [ 72.484647][ T5044] ? btrfs_mod_outstanding_extents+0x390/0x390 [ 72.490914][ T5044] ? sort+0xdb/0x110 [ 72.494837][ T5044] ? sort_r+0x1410/0x1430 [ 72.499229][ T5044] ? rcu_is_watching+0x15/0xb0 [ 72.504022][ T5044] ? btrfs_grab_root+0x320/0x320 [ 72.509161][ T5044] ? ensure_commit_roots_uptodate+0x26b/0x280 [ 72.515282][ T5044] btrfs_ioctl_send+0x2113/0x2750 [ 72.520444][ T5044] _btrfs_ioctl_send+0x2ff/0x430 [ 72.525449][ T5044] ? smack_file_ioctl+0x2a1/0x3a0 [ 72.530586][ T5044] ? btrfs_ioctl_set_received_subvol_32+0xb90/0xb90 [ 72.537217][ T5044] ? smack_file_alloc_security+0xe0/0xe0 [ 72.542945][ T5044] ? do_notify_parent+0x1100/0x1100 [ 72.548231][ T5044] btrfs_ioctl+0x90a/0xd40 [ 72.552660][ T5044] ? btrfs_ioctl_get_supported_features+0x50/0x50 [ 72.559133][ T5044] __se_sys_ioctl+0xf8/0x170 [ 72.563767][ T5044] do_syscall_64+0x41/0xc0 [ 72.568270][ T5044] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 72.574625][ T5044] RIP: 0033:0x7f7d98ea1689 [ 72.579131][ T5044] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 [ 72.598834][ T5044] RSP: 002b:00007ffd11b010c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 72.607258][ T5044] RAX: ffffffffffffffda RBX: 00007ffd11b01298 RCX: 00007f7d98ea1689 [ 72.615325][ T5044] RDX: 0000000020000140 RSI: 0000000040489426 RDI: 0000000000000003 [ 72.623650][ T5044] RBP: 00007f7d98f19610 R08: 00007ffd11b01298 R09: 00007ffd11b01298 [ 72.631707][ T5044] R10: 00007ffd11b01298 R11: 0000000000000246 R12: 0000000000000001 [ 72.639758][ T5044] R13: 00007ffd11b01288 R14: 0000000000000001 R15: 0000000000000001 [ 72.647814][ T5044] [ 72.650861][ T5044] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 72.658145][ T5044] CPU: 1 PID: 5044 Comm: syz-executor426 Not tainted 6.6.0-rc2-syzkaller-00309-g8018e02a8703 #0 [ 72.668564][ T5044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 72.678637][ T5044] Call Trace: [ 72.681928][ T5044] [ 72.684887][ T5044] dump_stack_lvl+0x1e7/0x2d0 [ 72.689586][ T5044] ? nf_tcp_handle_invalid+0x650/0x650 [ 72.695309][ T5044] ? panic+0x770/0x770 [ 72.699414][ T5044] ? vscnprintf+0x5d/0x80 [ 72.703760][ T5044] panic+0x30f/0x770 [ 72.707672][ T5044] ? __warn+0x171/0x4a0 [ 72.711840][ T5044] ? __memcpy_flushcache+0x2b0/0x2b0 [ 72.717152][ T5044] __warn+0x314/0x4a0 [ 72.721145][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.726457][ T5044] report_bug+0x2b3/0x500 [ 72.731581][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.737101][ T5044] handle_bug+0x3d/0x70 [ 72.741295][ T5044] exc_invalid_op+0x1a/0x50 [ 72.745825][ T5044] asm_exc_invalid_op+0x1a/0x20 [ 72.750687][ T5044] RIP: 0010:__kernel_write_iter+0x69b/0x7c0 [ 72.756606][ T5044] Code: 25 28 00 00 00 48 3b 84 24 e0 00 00 00 0f 85 2c 01 00 00 4c 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 35 1f 96 ff <0f> 0b 49 c7 c6 f7 ff ff ff eb a5 e8 25 1f 96 ff 4c 8b 74 24 18 eb [ 72.776221][ T5044] RSP: 0018:ffffc90003b2f700 EFLAGS: 00010293 [ 72.782300][ T5044] RAX: ffffffff81f7eb3b RBX: 00000000000a001d RCX: ffff888022d23b80 [ 72.790325][ T5044] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 72.798303][ T5044] RBP: ffffc90003b2f830 R08: ffffffff81f7e57c R09: 0000000000000000 [ 72.807082][ T5044] R10: ffffc90003b2f8a0 R11: fffff52000765f19 R12: 1ffff92000765eec [ 72.815240][ T5044] R13: 1ffff1100383cb7a R14: ffff88801c1e5b80 R15: dffffc0000000000 [ 72.823229][ T5044] ? __kernel_write_iter+0xdc/0x7c0 [ 72.828621][ T5044] ? __kernel_write_iter+0x69b/0x7c0 [ 72.834115][ T5044] ? verify_lock_unused+0x140/0x140 [ 72.839352][ T5044] ? vfs_read+0xb00/0xb00 [ 72.844431][ T5044] ? iov_iter_kvec+0x4e/0x1e0 [ 72.849163][ T5044] kernel_write+0x1d8/0x350 [ 72.853688][ T5044] ? __kernel_write+0x170/0x170 [ 72.858657][ T5044] ? btrfs_wait_ordered_extents+0xdbc/0xe20 [ 72.864585][ T5044] ? send_subvol+0x11c/0x49b0 [ 72.869282][ T5044] send_subvol+0x1ab/0x49b0 [ 72.873805][ T5044] ? __mutex_unlock_slowpath+0x21c/0x750 [ 72.879461][ T5044] ? btrfs_wait_ordered_extents+0xc34/0xe20 [ 72.885396][ T5044] ? mutex_unlock+0x10/0x10 [ 72.890092][ T5044] ? do_raw_spin_unlock+0x13b/0x8b0 [ 72.896490][ T5044] ? ensure_commit_roots_uptodate+0x280/0x280 [ 72.902598][ T5044] ? btrfs_mod_outstanding_extents+0x390/0x390 [ 72.908772][ T5044] ? sort+0xdb/0x110 [ 72.912683][ T5044] ? sort_r+0x1410/0x1430 [ 72.917019][ T5044] ? rcu_is_watching+0x15/0xb0 [ 72.921816][ T5044] ? btrfs_grab_root+0x320/0x320 [ 72.926772][ T5044] ? ensure_commit_roots_uptodate+0x26b/0x280 [ 72.932877][ T5044] btrfs_ioctl_send+0x2113/0x2750 [ 72.937933][ T5044] _btrfs_ioctl_send+0x2ff/0x430 [ 72.942892][ T5044] ? smack_file_ioctl+0x2a1/0x3a0 [ 72.948459][ T5044] ? btrfs_ioctl_set_received_subvol_32+0xb90/0xb90 [ 72.955063][ T5044] ? smack_file_alloc_security+0xe0/0xe0 [ 72.960717][ T5044] ? do_notify_parent+0x1100/0x1100 [ 72.965946][ T5044] btrfs_ioctl+0x90a/0xd40 [ 72.970387][ T5044] ? btrfs_ioctl_get_supported_features+0x50/0x50 [ 72.977447][ T5044] __se_sys_ioctl+0xf8/0x170 [ 72.982059][ T5044] do_syscall_64+0x41/0xc0 [ 72.986485][ T5044] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 72.992387][ T5044] RIP: 0033:0x7f7d98ea1689 [ 72.996822][ T5044] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 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 [ 73.016442][ T5044] RSP: 002b:00007ffd11b010c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.024871][ T5044] RAX: ffffffffffffffda RBX: 00007ffd11b01298 RCX: 00007f7d98ea1689 [ 73.032939][ T5044] RDX: 0000000020000140 RSI: 0000000040489426 RDI: 0000000000000003 [ 73.041009][ T5044] RBP: 00007f7d98f19610 R08: 00007ffd11b01298 R09: 00007ffd11b01298 [ 73.049092][ T5044] R10: 00007ffd11b01298 R11: 0000000000000246 R12: 0000000000000001 [ 73.057088][ T5044] R13: 00007ffd11b01288 R14: 0000000000000001 R15: 0000000000000001 [ 73.065081][ T5044] [ 73.068235][ T5044] Kernel Offset: disabled [ 73.072639][ T5044] Rebooting in 86400 seconds..