./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2769543255 <...> DUID 00:04:e3:38:52:80:67:3f:e9:c9:a2:47:22:a3:59:23:7d:1e forked to background, child pid 4888 [ 48.379218][ T4889] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.405543][ T4889] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.98' (ED25519) to the list of known hosts. execve("./syz-executor2769543255", ["./syz-executor2769543255"], 0x7ffe9fc3f7b0 /* 10 vars */) = 0 brk(NULL) = 0x555568bbf000 brk(0x555568bbfd00) = 0x555568bbfd00 arch_prctl(ARCH_SET_FS, 0x555568bbf380) = 0 set_tid_address(0x555568bbf650) = 5224 set_robust_list(0x555568bbf660, 24) = 0 rseq(0x555568bbfca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2769543255", 4096) = 28 getrandom("\x5e\xae\x7e\x6d\x0f\xf3\x30\x54", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555568bbfd00 brk(0x555568be0d00) = 0x555568be0d00 brk(0x555568be1000) = 0x555568be1000 mprotect(0x7f351a893000, 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 mkdir("./syzkaller.flA87Z", 0700) = 0 chmod("./syzkaller.flA87Z", 0777) = 0 chdir("./syzkaller.flA87Z") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5225 attached [pid 5225] set_robust_list(0x555568bbf660, 24 [pid 5224] <... clone resumed>, child_tidptr=0x555568bbf650) = 5225 [pid 5225] <... set_robust_list resumed>) = 0 [pid 5225] chdir("./0") = 0 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5225] setpgid(0, 0) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 [pid 5225] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5225] write(1, "executing program\n", 18) = 18 [pid 5225] memfd_create("syzkaller", 0) = 3 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3512200000 [pid 5225] 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 [pid 5225] munmap(0x7f3512200000, 138412032) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5225] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5225] close(3) = 0 [pid 5225] close(4) = 0 [pid 5225] mkdir("./file0", 0777) = 0 syzkaller login: [ 82.867315][ T5225] loop0: detected capacity change from 0 to 32768 [ 82.888758][ T5225] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 82.897935][ T5225] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 82.932594][ T5225] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms [ 82.943353][ T59] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 82.950421][ T59] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 82.995235][ T59] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 44ms [ 83.003465][ T59] gfs2: fsid=syz:syz.0: jid=0: Done [ 83.009197][ T5225] gfs2: fsid=syz:syz.0: first mount done, others may mount [pid 5225] mount("/dev/loop0", "./file0", "gfs2", 0, "quota,lockproto=lock_nolock,statfs_quantum=0x0ffff,") = 0 [pid 5225] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5225] chdir("./file0") = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5225] exit_group(0) = ? [pid 5225] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=48 /* 0.48 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555568bc06f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 83.281757][ T5225] gfs2: fsid=syz:syz.0: found 1 quota changes newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 83.364962][ T5224] ------------[ cut here ]------------ [ 83.370684][ T5224] WARNING: CPU: 1 PID: 5224 at include/linux/backing-dev.h:254 __folio_mark_dirty+0x879/0xe20 [ 83.380955][ T5224] Modules linked in: [ 83.384870][ T5224] CPU: 1 UID: 0 PID: 5224 Comm: syz-executor276 Not tainted 6.11.0-rc7-syzkaller #0 [ 83.394242][ T5224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 83.404319][ T5224] RIP: 0010:__folio_mark_dirty+0x879/0xe20 [ 83.410137][ T5224] Code: f3 8b e8 ca 33 88 ff 90 0f 0b 90 90 e9 81 f9 ff ff e8 1b 10 c6 ff 4c 89 f7 48 8b 34 24 e8 1f 42 33 00 eb 87 e8 08 10 c6 ff 90 <0f> 0b 90 e9 cd fb ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 95 f9 [ 83.429759][ T5224] RSP: 0018:ffffc9000349f6b0 EFLAGS: 00010093 [ 83.435833][ T5224] RAX: ffffffff81cd7c58 RBX: 0000000000000000 RCX: ffff88802abe1e00 [ 83.443810][ T5224] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 83.451784][ T5224] RBP: ffff888022c94cf8 R08: ffffffff81cd7821 R09: 1ffff1100459299f [ 83.459769][ T5224] R10: dffffc0000000000 R11: ffffed10045929a0 R12: 0000000000000001 [ 83.467747][ T5224] R13: ffff888022c94b88 R14: ffffea0000bde280 R15: 1ffff1100459299f [ 83.475721][ T5224] FS: 0000555568bbf380(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 [ 83.484651][ T5224] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.491236][ T5224] CR2: 0000555568bc86f8 CR3: 0000000079be8000 CR4: 00000000003506f0 [ 83.499211][ T5224] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.507185][ T5224] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.515158][ T5224] Call Trace: [ 83.518441][ T5224] [ 83.521374][ T5224] ? __warn+0x163/0x4e0 [ 83.525541][ T5224] ? __folio_mark_dirty+0x879/0xe20 [ 83.530748][ T5224] ? report_bug+0x2b3/0x500 [ 83.535263][ T5224] ? __folio_mark_dirty+0x879/0xe20 [ 83.540488][ T5224] ? handle_bug+0x3e/0x70 [ 83.544828][ T5224] ? exc_invalid_op+0x1a/0x50 [ 83.549524][ T5224] ? asm_exc_invalid_op+0x1a/0x20 [ 83.554560][ T5224] ? __folio_mark_dirty+0x441/0xe20 [ 83.559771][ T5224] ? __folio_mark_dirty+0x878/0xe20 [ 83.565011][ T5224] ? __folio_mark_dirty+0x879/0xe20 [ 83.570249][ T5224] mark_buffer_dirty+0x2a4/0x520 [ 83.575284][ T5224] gfs2_unpin+0x129/0xa60 [ 83.579650][ T5224] buf_lo_after_commit+0x14f/0x1a0 [ 83.584780][ T5224] ? __pfx_buf_lo_after_commit+0x10/0x10 [ 83.590437][ T5224] gfs2_log_flush+0x118d/0x2610 [ 83.595327][ T5224] ? __pfx_gfs2_log_flush+0x10/0x10 [ 83.600553][ T5224] ? kfree+0x149/0x360 [ 83.604631][ T5224] do_sync+0xa0b/0xc60 [ 83.608719][ T5224] ? __pfx_do_sync+0x10/0x10 [ 83.613351][ T5224] ? do_raw_spin_unlock+0x13c/0x8b0 [ 83.618564][ T5224] gfs2_quota_sync+0x3bc/0x4a0 [ 83.623351][ T5224] gfs2_sync_fs+0x4d/0xc0 [ 83.627693][ T5224] sync_filesystem+0xed/0x230 [ 83.632382][ T5224] generic_shutdown_super+0x72/0x2d0 [ 83.637678][ T5224] kill_block_super+0x44/0x90 [ 83.642368][ T5224] deactivate_locked_super+0xc4/0x130 [ 83.647766][ T5224] cleanup_mnt+0x41f/0x4b0 [ 83.652187][ T5224] ? lockdep_hardirqs_on+0x99/0x150 [ 83.657392][ T5224] task_work_run+0x24f/0x310 [ 83.662016][ T5224] ? __pfx_task_work_run+0x10/0x10 [ 83.667131][ T5224] ? path_umount+0x284/0xf70 [ 83.671762][ T5224] ptrace_notify+0x2d2/0x380 [ 83.676361][ T5224] ? __pfx_path_umount+0x10/0x10 [ 83.681308][ T5224] ? __pfx_ptrace_notify+0x10/0x10 [ 83.686433][ T5224] ? __x64_sys_umount+0x123/0x170 [ 83.691470][ T5224] ? __pfx___x64_sys_umount+0x10/0x10 [ 83.696868][ T5224] syscall_exit_work+0xc6/0x190 [ 83.701736][ T5224] syscall_exit_to_user_mode+0x279/0x370 [ 83.707401][ T5224] do_syscall_64+0x100/0x230 [ 83.712067][ T5224] ? clear_bhb_loop+0x35/0x90 [ 83.716773][ T5224] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 83.722688][ T5224] RIP: 0033:0x7f351a7e8307 [ 83.727123][ T5224] Code: 0a 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 83.746735][ T5224] RSP: 002b:00007ffff98d39f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 83.755174][ T5224] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f351a7e8307 [ 83.763162][ T5224] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffff98d3ab0 [ 83.771140][ T5224] RBP: 00007ffff98d3ab0 R08: 0000000000000000 R09: 0000000000000000 [ 83.779138][ T5224] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffff98d4b10 [ 83.787115][ T5224] R13: 0000555568bc06c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 83.795139][ T5224] [ 83.798162][ T5224] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 83.805437][ T5224] CPU: 1 UID: 0 PID: 5224 Comm: syz-executor276 Not tainted 6.11.0-rc7-syzkaller #0 [ 83.814816][ T5224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 83.824901][ T5224] Call Trace: [ 83.828190][ T5224] [ 83.831125][ T5224] dump_stack_lvl+0x241/0x360 [ 83.835829][ T5224] ? __pfx_dump_stack_lvl+0x10/0x10 [ 83.841064][ T5224] ? __pfx__printk+0x10/0x10 [ 83.845670][ T5224] ? _printk+0xd5/0x120 [ 83.849858][ T5224] ? vscnprintf+0x5d/0x90 [ 83.854208][ T5224] panic+0x349/0x860 [ 83.858128][ T5224] ? __warn+0x172/0x4e0 [ 83.862304][ T5224] ? __pfx_panic+0x10/0x10 [ 83.866737][ T5224] ? show_trace_log_lvl+0x4e6/0x520 [ 83.871972][ T5224] __warn+0x346/0x4e0 [ 83.875981][ T5224] ? __folio_mark_dirty+0x879/0xe20 [ 83.881195][ T5224] report_bug+0x2b3/0x500 [ 83.885546][ T5224] ? __folio_mark_dirty+0x879/0xe20 [ 83.890846][ T5224] handle_bug+0x3e/0x70 [ 83.895032][ T5224] exc_invalid_op+0x1a/0x50 [ 83.899573][ T5224] asm_exc_invalid_op+0x1a/0x20 [ 83.904572][ T5224] RIP: 0010:__folio_mark_dirty+0x879/0xe20 [ 83.910428][ T5224] Code: f3 8b e8 ca 33 88 ff 90 0f 0b 90 90 e9 81 f9 ff ff e8 1b 10 c6 ff 4c 89 f7 48 8b 34 24 e8 1f 42 33 00 eb 87 e8 08 10 c6 ff 90 <0f> 0b 90 e9 cd fb ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 95 f9 [ 83.930045][ T5224] RSP: 0018:ffffc9000349f6b0 EFLAGS: 00010093 [ 83.936121][ T5224] RAX: ffffffff81cd7c58 RBX: 0000000000000000 RCX: ffff88802abe1e00 [ 83.944094][ T5224] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 83.952091][ T5224] RBP: ffff888022c94cf8 R08: ffffffff81cd7821 R09: 1ffff1100459299f [ 83.960066][ T5224] R10: dffffc0000000000 R11: ffffed10045929a0 R12: 0000000000000001 [ 83.968043][ T5224] R13: ffff888022c94b88 R14: ffffea0000bde280 R15: 1ffff1100459299f [ 83.976029][ T5224] ? __folio_mark_dirty+0x441/0xe20 [ 83.981230][ T5224] ? __folio_mark_dirty+0x878/0xe20 [ 83.986445][ T5224] mark_buffer_dirty+0x2a4/0x520 [ 83.991426][ T5224] gfs2_unpin+0x129/0xa60 [ 83.995776][ T5224] buf_lo_after_commit+0x14f/0x1a0 [ 84.000911][ T5224] ? __pfx_buf_lo_after_commit+0x10/0x10 [ 84.006577][ T5224] gfs2_log_flush+0x118d/0x2610 [ 84.011451][ T5224] ? __pfx_gfs2_log_flush+0x10/0x10 [ 84.016663][ T5224] ? kfree+0x149/0x360 [ 84.020832][ T5224] do_sync+0xa0b/0xc60 [ 84.024920][ T5224] ? __pfx_do_sync+0x10/0x10 [ 84.029527][ T5224] ? do_raw_spin_unlock+0x13c/0x8b0 [ 84.034750][ T5224] gfs2_quota_sync+0x3bc/0x4a0 [ 84.039551][ T5224] gfs2_sync_fs+0x4d/0xc0 [ 84.043890][ T5224] sync_filesystem+0xed/0x230 [ 84.048601][ T5224] generic_shutdown_super+0x72/0x2d0 [ 84.053917][ T5224] kill_block_super+0x44/0x90 [ 84.058608][ T5224] deactivate_locked_super+0xc4/0x130 [ 84.063996][ T5224] cleanup_mnt+0x41f/0x4b0 [ 84.068444][ T5224] ? lockdep_hardirqs_on+0x99/0x150 [ 84.073647][ T5224] task_work_run+0x24f/0x310 [ 84.078247][ T5224] ? __pfx_task_work_run+0x10/0x10 [ 84.083378][ T5224] ? path_umount+0x284/0xf70 [ 84.088004][ T5224] ptrace_notify+0x2d2/0x380 [ 84.092600][ T5224] ? __pfx_path_umount+0x10/0x10 [ 84.097639][ T5224] ? __pfx_ptrace_notify+0x10/0x10 [ 84.102784][ T5224] ? __x64_sys_umount+0x123/0x170 [ 84.107903][ T5224] ? __pfx___x64_sys_umount+0x10/0x10 [ 84.113307][ T5224] syscall_exit_work+0xc6/0x190 [ 84.118168][ T5224] syscall_exit_to_user_mode+0x279/0x370 [ 84.123813][ T5224] do_syscall_64+0x100/0x230 [ 84.128410][ T5224] ? clear_bhb_loop+0x35/0x90 [ 84.133118][ T5224] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.139036][ T5224] RIP: 0033:0x7f351a7e8307 [ 84.143463][ T5224] Code: 0a 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 84.163096][ T5224] RSP: 002b:00007ffff98d39f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 84.171530][ T5224] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f351a7e8307 [ 84.179545][ T5224] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffff98d3ab0 [ 84.187569][ T5224] RBP: 00007ffff98d3ab0 R08: 0000000000000000 R09: 0000000000000000 [ 84.195646][ T5224] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffff98d4b10 [ 84.203649][ T5224] R13: 0000555568bc06c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 84.211653][ T5224] [ 84.214934][ T5224] Kernel Offset: disabled [ 84.219465][ T5224] Rebooting in 86400 seconds..