Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.766794] REISERFS (device loop0): found reiserfs format "3.5" with standard journal [ 29.775326] REISERFS (device loop0): using ordered data mode [ 29.784690] reiserfs: using flush barriers [ 29.790495] REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 29.808618] REISERFS (device loop0): checking transaction log (loop0) [ 30.410897] ================================================================== [ 30.420502] BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x2030/0x2190 [ 30.428527] Read of size 4 at addr ffff8880876c5000 by task syz-executor847/7983 [ 30.436402] [ 30.438027] CPU: 1 PID: 7983 Comm: syz-executor847 Not tainted 4.14.213-syzkaller #0 [ 30.446230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.456126] Call Trace: [ 30.459202] dump_stack+0x1b2/0x283 [ 30.462833] print_address_description.cold+0x54/0x1d3 [ 30.468455] kasan_report_error.cold+0x8a/0x194 [ 30.473121] ? reiserfs_read_locked_inode+0x2030/0x2190 [ 30.478473] __asan_report_load_n_noabort+0x6b/0x80 [ 30.483573] ? reiserfs_read_locked_inode+0x2030/0x2190 [ 30.488977] reiserfs_read_locked_inode+0x2030/0x2190 [ 30.494307] ? sd_attrs_to_i_attrs+0x230/0x230 [ 30.499442] ? __ww_mutex_wakeup_for_backoff+0x200/0x210 [ 30.505417] reiserfs_fill_super+0x151f/0x28be [ 30.510397] ? reiserfs_remount+0x1390/0x1390 [ 30.515472] ? lock_downgrade+0x740/0x740 [ 30.520517] ? snprintf+0xa5/0xd0 [ 30.524109] ? ns_test_super+0x50/0x50 [ 30.529128] ? set_blocksize+0x125/0x380 [ 30.534010] mount_bdev+0x2b3/0x360 [ 30.537863] ? reiserfs_remount+0x1390/0x1390 [ 30.542391] mount_fs+0x92/0x2a0 [ 30.545752] vfs_kern_mount.part.0+0x5b/0x470 [ 30.550245] do_mount+0xe53/0x2a00 [ 30.553784] ? retint_kernel+0x2d/0x2d [ 30.557666] ? copy_mount_string+0x40/0x40 [ 30.561983] ? memset+0x20/0x40 [ 30.565338] ? copy_mount_options+0x1fa/0x2f0 [ 30.569911] ? copy_mnt_ns+0xa30/0xa30 [ 30.573791] SyS_mount+0xa8/0x120 [ 30.577544] ? copy_mnt_ns+0xa30/0xa30 [ 30.581434] do_syscall_64+0x1d5/0x640 [ 30.585445] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.590622] RIP: 0033:0x446dda [ 30.593798] RSP: 002b:00007ffdc0dc1258 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 30.601637] RAX: ffffffffffffffda RBX: 00007ffdc0dc12b0 RCX: 0000000000446dda [ 30.608946] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdc0dc1270 [ 30.616295] RBP: 00007ffdc0dc1270 R08: 00007ffdc0dc12b0 R09: 00007ffd00000015 [ 30.623606] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006 [ 30.630997] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 30.638267] [ 30.639882] The buggy address belongs to the page: [ 30.644995] page:ffffea00021db140 count:0 mapcount:0 mapping: (null) index:0x1 [ 30.653404] flags: 0xfff00000000000() [ 30.657217] raw: 00fff00000000000 0000000000000000 0000000000000001 00000000ffffffff [ 30.665143] raw: ffffea00021db1a0 ffff8880ba52dac8 0000000000000000 0000000000000000 [ 30.673313] page dumped because: kasan: bad access detected [ 30.679014] [ 30.680633] Memory state around the buggy address: [ 30.685686] ffff8880876c4f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.693035] ffff8880876c4f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.700469] >ffff8880876c5000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.707818] ^ [ 30.711172] ffff8880876c5080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.718763] ffff8880876c5100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 30.726166] ================================================================== [ 30.733602] Disabling lock debugging due to kernel taint [ 30.739223] Kernel panic - not syncing: panic_on_warn set ... [ 30.739223] [ 30.746720] CPU: 1 PID: 7983 Comm: syz-executor847 Tainted: G B 4.14.213-syzkaller #0 [ 30.755813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.765163] Call Trace: [ 30.767818] dump_stack+0x1b2/0x283 [ 30.771446] panic+0x1f9/0x42d [ 30.774642] ? add_taint.cold+0x16/0x16 [ 30.778606] kasan_end_report+0x43/0x49 [ 30.782911] kasan_report_error.cold+0xa7/0x194 [ 30.787681] ? reiserfs_read_locked_inode+0x2030/0x2190 [ 30.793027] __asan_report_load_n_noabort+0x6b/0x80 [ 30.798078] ? reiserfs_read_locked_inode+0x2030/0x2190 [ 30.803462] reiserfs_read_locked_inode+0x2030/0x2190 [ 30.808637] ? sd_attrs_to_i_attrs+0x230/0x230 [ 30.813202] ? __ww_mutex_wakeup_for_backoff+0x200/0x210 [ 30.818666] reiserfs_fill_super+0x151f/0x28be [ 30.823278] ? reiserfs_remount+0x1390/0x1390 [ 30.827757] ? lock_downgrade+0x740/0x740 [ 30.831888] ? snprintf+0xa5/0xd0 [ 30.835324] ? ns_test_super+0x50/0x50 [ 30.839215] ? set_blocksize+0x125/0x380 [ 30.843285] mount_bdev+0x2b3/0x360 [ 30.846907] ? reiserfs_remount+0x1390/0x1390 [ 30.851383] mount_fs+0x92/0x2a0 [ 30.854740] vfs_kern_mount.part.0+0x5b/0x470 [ 30.859282] do_mount+0xe53/0x2a00 [ 30.862815] ? retint_kernel+0x2d/0x2d [ 30.866677] ? copy_mount_string+0x40/0x40 [ 30.870896] ? memset+0x20/0x40 [ 30.874168] ? copy_mount_options+0x1fa/0x2f0 [ 30.878647] ? copy_mnt_ns+0xa30/0xa30 [ 30.882510] SyS_mount+0xa8/0x120 [ 30.885936] ? copy_mnt_ns+0xa30/0xa30 [ 30.889805] do_syscall_64+0x1d5/0x640 [ 30.893679] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.898842] RIP: 0033:0x446dda [ 30.902050] RSP: 002b:00007ffdc0dc1258 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 30.909736] RAX: ffffffffffffffda RBX: 00007ffdc0dc12b0 RCX: 0000000000446dda [ 30.916979] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdc0dc1270 [ 30.924241] RBP: 00007ffdc0dc1270 R08: 00007ffdc0dc12b0 R09: 00007ffd00000015 [ 30.931573] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006 [ 30.938830] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 30.946531] Kernel Offset: disabled [ 30.950171] Rebooting in 86400 seconds..