bisecting fixing commit since 87ef12027b9b1dd0e0b12cf311fbcb19f9d92539 building syzkaller on 3642839c105d2c84160c10866805f903a22fa343 testing commit 87ef12027b9b1dd0e0b12cf311fbcb19f9d92539 with gcc (GCC) 8.1.0 run #0: crashed: WARNING in corrupted run #1: crashed: WARNING in unlock_new_inode run #2: crashed: WARNING in corrupted run #3: crashed: WARNING in unlock_new_inode run #4: crashed: WARNING in unlock_new_inode run #5: crashed: WARNING in unlock_new_inode run #6: crashed: WARNING in corrupted run #7: crashed: WARNING in unlock_new_inode run #8: crashed: WARNING in unlock_new_inode run #9: crashed: WARNING in unlock_new_inode testing current HEAD 5c6207539aea8b22490f9569db5aa72ddfd0d486 testing commit 5c6207539aea8b22490f9569db5aa72ddfd0d486 with gcc (GCC) 8.1.0 run #0: crashed: WARNING in unlock_new_inode run #1: crashed: WARNING in unlock_new_inode run #2: crashed: WARNING in unlock_new_inode run #3: crashed: WARNING in unlock_new_inode run #4: crashed: WARNING in unlock_new_inode run #5: crashed: WARNING in unlock_new_inode run #6: crashed: WARNING in unlock_new_inode run #7: crashed: WARNING in unlock_new_inode run #8: crashed: WARNING in unlock_new_inode run #9: crashed: WARNING in corrupted revisions tested: 2, total time: 18m42.56170717s (build: 10m22.337549916s, test: 7m2.452882251s) the crash still happens on HEAD crash: WARNING in corrupted REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop3): checking transaction log (loop3) REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): using 3.5.x disk format ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4528 at fs/inode.c:984 unlock_new_inode.cold.33+0xc/0x3a fs/inode.c:984 REISERFS (device loop3): Using r5 hash to sort names Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 4528 Comm: syz-executor2 Not tainted 5.3.0-rc2+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x115/0x167 lib/dump_stack.c:113 REISERFS (device loop3): using 3.5.x disk format panic+0x223/0x4ee kernel/panic.c:219 __warn.cold.10+0x1b/0x45 kernel/panic.c:576 ------------[ cut here ]------------ report_bug+0x1a4/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291 WARNING: CPU: 0 PID: 4553 at fs/inode.c:984 unlock_new_inode.cold.33+0xc/0x3a fs/inode.c:984 Modules linked in: invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1026 CPU: 0 PID: 4553 Comm: syz-executor3 Not tainted 5.3.0-rc2+ #1 RIP: 0010:unlock_new_inode.cold.33+0xc/0x3a fs/inode.c:984 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Code: 2d 90 ff ff 89 75 ec e8 f9 bf f2 ff 8b 75 ec eb b3 89 75 ec e8 ec bf f2 ff 8b 75 ec eb c4 48 c7 c7 20 52 13 87 e8 7a 58 ae ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 RIP: 0010:unlock_new_inode.cold.33+0xc/0x3a fs/inode.c:984 RSP: 0018:ffff8881ca0df4e0 EFLAGS: 00010282 Code: 2d 90 ff ff 89 75 ec e8 f9 bf f2 ff 8b 75 ec eb b3 89 75 ec e8 ec bf f2 ff 8b 75 ec eb c4 48 c7 c7 20 52 13 87 e8 7a 58 ae ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 RAX: 0000000000000024 RBX: ffff8881ba786730 RCX: ffffffff82e452fe RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881db1277cc RSP: 0018:ffff8881d02974e0 EFLAGS: 00010282 RBP: ffff8881ca0df500 R08: ffffed103b6260e9 R09: ffffed103b6260e9 R10: ffffed103b6260e8 R11: ffff8881db130747 R12: ffff8881ba786800 RAX: 0000000000000024 RBX: ffff8881ba7d2730 RCX: 0000000000000006 R13: ffff8881ba7867b8 R14: 00000000fffffff4 R15: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffff8881d0297500 R08: 0000000000000006 R09: fffffbfff12c6459 reiserfs_new_inode+0x3aa/0x2130 fs/reiserfs/inode.c:2160 R10: fffffbfff12c6458 R11: ffffffff896322c7 R12: ffff8881ba7d2800 R13: ffff8881ba7d27b8 R14: 00000000fffffff4 R15: 0000000000000000 FS: 00007fdebcfd5700(0000) GS:ffff8881db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe634d92000 CR3: 00000001c114e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reiserfs_new_inode+0x3aa/0x2130 fs/reiserfs/inode.c:2160 reiserfs_mkdir+0x420/0x840 fs/reiserfs/namei.c:838 xattr_mkdir.constprop.18+0x96/0xc0 fs/reiserfs/xattr.c:76 create_privroot fs/reiserfs/xattr.c:875 [inline] reiserfs_xattr_init+0x45b/0x9bc fs/reiserfs/xattr.c:994 reiserfs_fill_super+0x1b7e/0x2800 fs/reiserfs/super.c:2171 reiserfs_mkdir+0x420/0x840 fs/reiserfs/namei.c:838 xattr_mkdir.constprop.18+0x96/0xc0 fs/reiserfs/xattr.c:76 create_privroot fs/reiserfs/xattr.c:875 [inline] reiserfs_xattr_init+0x45b/0x9bc fs/reiserfs/xattr.c:994 reiserfs_fill_super+0x1b7e/0x2800 fs/reiserfs/super.c:2171 mount_bdev+0x27b/0x340 fs/super.c:1283 get_super_block+0x10/0x20 fs/reiserfs/super.c:2599 legacy_get_tree+0x103/0x1f0 fs/fs_context.c:661 vfs_get_tree+0x8b/0x360 fs/super.c:1413 mount_bdev+0x27b/0x340 fs/super.c:1283 do_new_mount fs/namespace.c:2791 [inline] do_mount+0x584/0x1b40 fs/namespace.c:3111 get_super_block+0x10/0x20 fs/reiserfs/super.c:2599 legacy_get_tree+0x103/0x1f0 fs/fs_context.c:661 vfs_get_tree+0x8b/0x360 fs/super.c:1413 do_new_mount fs/namespace.c:2791 [inline] do_mount+0x584/0x1b40 fs/namespace.c:3111 ksys_mount+0xba/0xe0 fs/namespace.c:3320 __do_sys_mount fs/namespace.c:3334 [inline] __se_sys_mount fs/namespace.c:3331 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3331 do_syscall_64+0xd6/0x550 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457eaa ksys_mount+0xba/0xe0 fs/namespace.c:3320 Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 8f fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 8f fb ff c3 66 0f 1f 84 00 00 00 00 00 __do_sys_mount fs/namespace.c:3334 [inline] __se_sys_mount fs/namespace.c:3331 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3331 RSP: 002b:00007f7fcc4f8bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 do_syscall_64+0xd6/0x550 arch/x86/entry/common.c:296 RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000457eaa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7fcc4f8c00 entry_SYSCALL_64_after_hwframe+0x49/0xbe RBP: 0000000000000006 R08: 0000000020011500 R09: 0000000020000000 RIP: 0033:0x457eaa R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 000000000000067d R14: 00000000006fcc58 R15: 0000000000000000 Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 8f fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 8f fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fdebcfd4bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000457eaa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fdebcfd4c00 RBP: 0000000000000006 R08: 0000000020011500 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 000000000000067d R14: 00000000006fcc58 R15: 0000000000000000 irq event stamp: 18026 hardirqs last enabled at (18025): [] trace_hardirqs_on_thunk+0x1a/0x20 arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (18026): [] trace_hardirqs_off_thunk+0x1a/0x20 arch/x86/entry/thunk_64.S:42 softirqs last enabled at (17980): [] __do_softirq+0x68b/0x94c kernel/softirq.c:319 softirqs last disabled at (17969): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (17969): [] irq_exit+0x1bb/0x1e0 kernel/softirq.c:413 ---[ end trace c45ff6ade6a64615 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..