./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1648339498 <...> DUID 00:04:a1:84:1b:e0:48:24:35:f8:15:f9:55:b5:79:ea:e6:3e forked to background, child pid 4660 [ 30.526709][ T4661] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.541459][ T4661] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.101' (ECDSA) to the list of known hosts. execve("./syz-executor1648339498", ["./syz-executor1648339498"], 0x7ffc1c785090 /* 10 vars */) = 0 brk(NULL) = 0x5555571f9000 brk(0x5555571f9c40) = 0x5555571f9c40 arch_prctl(ARCH_SET_FS, 0x5555571f9300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1648339498", 4096) = 28 brk(0x55555721ac40) = 0x55555721ac40 brk(0x55555721b000) = 0x55555721b000 mprotect(0x7f42918e5000, 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) = 0x7f428942b000 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"..., 4194304) = 4194304 munmap(0x7f428942b000, 4194304) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 syzkaller login: [ 55.115256][ T4992] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4992 'syz-executor164' ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 mkdir("./file0", 0777) = 0 [ 55.162194][ T4992] loop0: detected capacity change from 0 to 8192 [ 55.175545][ T4992] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 55.188636][ T4992] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 55.198234][ T4992] REISERFS (device loop0): using ordered data mode [ 55.204813][ T4992] reiserfs: using flush barriers [ 55.211024][ T4992] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 55.227761][ T4992] REISERFS (device loop0): checking transaction log (loop0) mount("/dev/loop0", "./file0", "reiserfs", MS_DIRSYNC, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 creat("./bus", 000) = 4 [ 55.270375][ T4992] REISERFS (device loop0): Using r5 hash to sort names [ 55.277498][ T4992] REISERFS (device loop0): using 3.5.x disk format [ 55.285030][ T4992] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 55.308504][ T4992] ------------[ cut here ]------------ [ 55.314199][ T4992] kernel BUG at fs/reiserfs/journal.c:505! [ 55.320208][ T4992] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 55.326306][ T4992] CPU: 1 PID: 4992 Comm: syz-executor164 Not tainted 6.4.0-syzkaller-00082-gc0a572d9d32f #0 [ 55.336379][ T4992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 55.346461][ T4992] RIP: 0010:reiserfs_in_journal+0xa96/0xaa0 [ 55.352360][ T4992] Code: f6 ff ff 48 8b 4c 24 30 80 e1 07 80 c1 03 38 c1 0f 8c 51 fd ff ff 48 8b 7c 24 30 e8 94 55 b2 ff e9 42 fd ff ff e8 4a 70 5a ff <0f> 0b 0f 1f 84 00 00 00 00 00 66 0f 1f 00 55 41 57 41 56 41 55 41 [ 55.372033][ T4992] RSP: 0018:ffffc90003afeea0 EFLAGS: 00010293 [ 55.378086][ T4992] RAX: ffffffff823115a6 RBX: ffffc90003b43048 RCX: ffff888027060000 [ 55.386074][ T4992] RDX: 0000000000000000 RSI: 0000000000000213 RDI: 0000000000000213 [ 55.394052][ T4992] RBP: ffffc90003b43050 R08: ffffffff82310ded R09: ffffed100e663209 [ 55.402089][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000213 [ 55.410039][ T4992] R13: ffffc90003b412e0 R14: ffff88807ca98000 R15: dffffc0000000000 [ 55.417992][ T4992] FS: 00005555571f9300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 55.426901][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.433465][ T4992] CR2: 0000000020003000 CR3: 0000000023c5d000 CR4: 00000000003506e0 [ 55.441417][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.449365][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.457320][ T4992] Call Trace: [ 55.460580][ T4992] [ 55.463497][ T4992] ? __die_body+0x5e/0xa0 [ 55.467809][ T4992] ? die+0x87/0xb0 [ 55.471506][ T4992] ? do_trap+0x11e/0x350 [ 55.475730][ T4992] ? reiserfs_in_journal+0xa96/0xaa0 [ 55.480992][ T4992] ? reiserfs_in_journal+0xa96/0xaa0 [ 55.486256][ T4992] ? do_error_trap+0x141/0x1f0 [ 55.491000][ T4992] ? reiserfs_in_journal+0xa96/0xaa0 [ 55.496267][ T4992] ? do_int3+0x30/0x30 [ 55.500315][ T4992] ? report_bug+0x3e4/0x500 [ 55.504809][ T4992] ? handle_invalid_op+0x2c/0x40 [ 55.509724][ T4992] ? reiserfs_in_journal+0xa96/0xaa0 [ 55.514988][ T4992] ? exc_invalid_op+0x33/0x50 [ 55.519643][ T4992] ? asm_exc_invalid_op+0x1a/0x20 [ 55.524650][ T4992] ? reiserfs_in_journal+0x2dd/0xaa0 [ 55.529928][ T4992] ? reiserfs_in_journal+0xa96/0xaa0 [ 55.535206][ T4992] ? reiserfs_in_journal+0xa96/0xaa0 [ 55.540481][ T4992] scan_bitmap_block+0x48b/0xff0 [ 55.545414][ T4992] ? oid_groups+0x500/0x500 [ 55.549906][ T4992] ? mutex_lock_nested+0x1b/0x20 [ 55.554828][ T4992] reiserfs_allocate_blocknrs+0x2ddd/0x5070 [ 55.560705][ T4992] ? search_by_key+0x4b60/0x4b60 [ 55.565624][ T4992] ? show_alloc_options+0xc00/0xc00 [ 55.570800][ T4992] ? journal_begin+0x1f3/0x360 [ 55.575558][ T4992] ? copy_item_head+0x22/0x30 [ 55.580214][ T4992] reiserfs_get_block+0x3280/0x5130 [ 55.585406][ T4992] ? make_le_item_head+0x570/0x570 [ 55.590502][ T4992] ? __generic_file_write_iter+0x17a/0x400 [ 55.596302][ T4992] ? generic_file_write_iter+0xaf/0x310 [ 55.601834][ T4992] ? vfs_write+0x782/0xaf0 [ 55.606240][ T4992] ? ksys_write+0x1a0/0x2c0 [ 55.610736][ T4992] ? do_syscall_64+0x41/0xc0 [ 55.615312][ T4992] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.621363][ T4992] ? mark_lock+0x9a/0x340 [ 55.625678][ T4992] ? __lock_acquire+0x1316/0x2070 [ 55.630692][ T4992] ? __lock_acquire+0x2070/0x2070 [ 55.635698][ T4992] ? folio_attach_private+0xce/0x1f0 [ 55.641140][ T4992] ? do_raw_spin_unlock+0x13b/0x8b0 [ 55.646499][ T4992] ? _raw_spin_unlock+0x28/0x40 [ 55.651329][ T4992] ? folio_create_buffers+0x132/0x250 [ 55.656754][ T4992] __block_write_begin_int+0x548/0x1a50 [ 55.662305][ T4992] ? folio_add_lru+0x353/0x6f0 [ 55.667073][ T4992] ? make_le_item_head+0x570/0x570 [ 55.672222][ T4992] ? PageUptodate+0x290/0x290 [ 55.676893][ T4992] ? folio_test_hugetlb+0xa0/0x1d0 [ 55.681993][ T4992] ? __block_write_begin+0x65/0x160 [ 55.687175][ T4992] ? reiserfs_write_begin+0x183/0x520 [ 55.692530][ T4992] reiserfs_write_begin+0x24d/0x520 [ 55.697713][ T4992] generic_perform_write+0x300/0x5e0 [ 55.702982][ T4992] ? generic_file_direct_write+0x460/0x460 [ 55.708768][ T4992] ? __file_remove_privs+0x650/0x650 [ 55.714033][ T4992] ? generic_write_checks+0x160/0x1c0 [ 55.719382][ T4992] __generic_file_write_iter+0x17a/0x400 [ 55.724998][ T4992] generic_file_write_iter+0xaf/0x310 [ 55.730349][ T4992] vfs_write+0x782/0xaf0 [ 55.734575][ T4992] ? file_end_write+0x250/0x250 [ 55.739412][ T4992] ? lockdep_hardirqs_on+0x98/0x140 [ 55.744589][ T4992] ? __fdget_pos+0x265/0x2f0 [ 55.749156][ T4992] ksys_write+0x1a0/0x2c0 [ 55.753471][ T4992] ? __ia32_sys_read+0x90/0x90 [ 55.758214][ T4992] ? syscall_enter_from_user_mode+0x32/0x230 [ 55.764177][ T4992] ? syscall_enter_from_user_mode+0x8c/0x230 [ 55.770138][ T4992] do_syscall_64+0x41/0xc0 [ 55.774537][ T4992] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.780416][ T4992] RIP: 0033:0x7f42918777b9 [ 55.784813][ T4992] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 55.804405][ T4992] RSP: 002b:00007ffd2e4c4638 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 55.812800][ T4992] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f42918777b9 [ 55.821291][ T4992] RDX: 000000000000fd14 RSI: 0000000020001700 RDI: 0000000000000004 [ 55.829247][ T4992] RBP: 00007f4291837050 R08: 0000000000000000 R09: 0000000000000000 [ 55.837201][ T4992] R10: 00000000000010f4 R11: 0000000000000246 R12: 00007f42918370e0 [ 55.845155][ T4992] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.853217][ T4992] [ 55.856228][ T4992] Modules linked in: [ 55.861107][ T4992] ---[ end trace 0000000000000000 ]--- [ 55.867308][ T4992] RIP: 0010:reiserfs_in_journal+0xa96/0xaa0 [ 55.873359][ T4992] Code: f6 ff ff 48 8b 4c 24 30 80 e1 07 80 c1 03 38 c1 0f 8c 51 fd ff ff 48 8b 7c 24 30 e8 94 55 b2 ff e9 42 fd ff ff e8 4a 70 5a ff <0f> 0b 0f 1f 84 00 00 00 00 00 66 0f 1f 00 55 41 57 41 56 41 55 41 [ 55.893101][ T4992] RSP: 0018:ffffc90003afeea0 EFLAGS: 00010293 [ 55.899276][ T4992] RAX: ffffffff823115a6 RBX: ffffc90003b43048 RCX: ffff888027060000 [ 55.907375][ T4992] RDX: 0000000000000000 RSI: 0000000000000213 RDI: 0000000000000213 [ 55.915780][ T4992] RBP: ffffc90003b43050 R08: ffffffff82310ded R09: ffffed100e663209 [ 55.924191][ T4992] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000213 [ 55.932375][ T4992] R13: ffffc90003b412e0 R14: ffff88807ca98000 R15: dffffc0000000000 [ 55.940518][ T4992] FS: 00005555571f9300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 55.949489][ T4992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.956096][ T4992] CR2: 0000000020003000 CR3: 0000000023c5d000 CR4: 00000000003506e0 [ 55.964114][ T4992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.972084][ T4992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.980447][ T4992] Kernel panic - not syncing: Fatal exception [ 55.991106][ T4992] Kernel Offset: disabled [ 55.995423][ T4992] Rebooting in 86400 seconds..