syzbot


kernel BUG in hfs_bnode_put

Status: upstream: reported C repro on 2022/12/07 09:36
Reported-by: syzbot+3b67f7623706f6c58417@syzkaller.appspotmail.com
First crash: 563d, last: 563d
Fix bisection: failed (error log, bisect log)
  
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in hfs_bnode_put hfs C error 5 511d 565d 22/27 fixed on 2023/06/08 14:41
linux-4.14 kernel BUG in hfs_bnode_put C 1 477d 557d 0/1 upstream: reported C repro on 2022/12/12 23:46

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/hfs/bnode.c:478!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 213 Comm: kworker/u4:3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:hfs_bnode_put.part.0+0x20d/0x260 fs/hfs/bnode.c:478
Code: 65 ff 48 89 ef e8 f3 f8 ff ff 48 8b 3c 24 e8 ea fd 1b 06 48 89 ef e8 52 72 00 00 48 89 ef e8 ba fa ff ff eb c5 e8 43 33 65 ff <0f> 0b 48 8b 7c 24 08 e8 97 0f 9b ff e9 c8 fe ff ff 4c 89 ef e8 8a
RSP: 0018:ffff8880b4dd76c8 EFLAGS: 00010293
RAX: ffff8880b4fd6640 RBX: 0000000000000000 RCX: ffffffff81fd509c
RDX: 0000000000000000 RSI: ffffffff81fd522d RDI: 0000000000000005
RBP: ffff8880a8e49100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809cd70c40
R13: ffff8880a8e49178 R14: 0000000000000000 R15: ffff88809ce11a28
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feba8849f70 CR3: 00000000aa2e6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hfs_bnode_put+0x1b/0x30 fs/hfs/bnode.c:471
 hfs_btree_write+0x3ba/0x470 fs/hfs/btree.c:185
 hfs_write_inode+0x56d/0x930 fs/hfs/inode.c:438
 write_inode fs/fs-writeback.c:1244 [inline]
 __writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
 writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
 __writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1716
 wb_writeback+0x841/0xcc0 fs/fs-writeback.c:1822
 wb_check_start_all fs/fs-writeback.c:1946 [inline]
 wb_do_writeback fs/fs-writeback.c:1972 [inline]
 wb_workfn+0xbf4/0x1250 fs/fs-writeback.c:2006
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace b03018190d96a4da ]---
RIP: 0010:hfs_bnode_put.part.0+0x20d/0x260 fs/hfs/bnode.c:478
Code: 65 ff 48 89 ef e8 f3 f8 ff ff 48 8b 3c 24 e8 ea fd 1b 06 48 89 ef e8 52 72 00 00 48 89 ef e8 ba fa ff ff eb c5 e8 43 33 65 ff <0f> 0b 48 8b 7c 24 08 e8 97 0f 9b ff e9 c8 fe ff ff 4c 89 ef e8 8a
RSP: 0018:ffff8880b4dd76c8 EFLAGS: 00010293
RAX: ffff8880b4fd6640 RBX: 0000000000000000 RCX: ffffffff81fd509c
RDX: 0000000000000000 RSI: ffffffff81fd522d RDI: 0000000000000005
RBP: ffff8880a8e49100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809cd70c40
R13: ffff8880a8e49178 R14: 0000000000000000 R15: ffff88809ce11a28
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feba8849f70 CR3: 00000000aa2e6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/12/07 09:35 linux-4.19.y 3f8a27f9e27b d88f3abb .config console log report syz C [disk image] [vmlinux] [mounted in repro] ci2-linux-4-19 kernel BUG in hfs_bnode_put
* Struck through repros no longer work on HEAD.