Hello, syzbot found the following issue on:
HEAD commit: eabcdba3ad40 Merge tag 'for-6.13-rc3-tag' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12514cf8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1234f097ee657d8b dashboard link: https://syzkaller.appspot.com/bug?extid=cf9a826a13c8657c38e9 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=160d22df980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7a4dff87674a/disk-eabcdba3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/266bc2b7ced3/vmlinux-eabcdba3.xz kernel image: https://storage.googleapis.com/syzbot-assets/ee4bcd9be832/bzImage-eabcdba3.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/7cb3486c31c1/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: [email protected] ------------[ cut here ]------------ Mixed reader flavors for srcu_struct at 0xffff888068604388. WARNING: CPU: 1 PID: 5992 at kernel/rcu/srcutree.c:474 srcu_readers_unlock_idx kernel/rcu/srcutree.c:473 [inline] WARNING: CPU: 1 PID: 5992 at kernel/rcu/srcutree.c:474 srcu_readers_active_idx_check kernel/rcu/srcutree.c:489 [inline] WARNING: CPU: 1 PID: 5992 at kernel/rcu/srcutree.c:474 try_check_zero+0x45a/0x4a0 kernel/rcu/srcutree.c:1108 Modules linked in: CPU: 1 UID: 0 PID: 5992 Comm: kworker/1:4 Not tainted 6.13.0-rc3-syzkaller-00073-geabcdba3ad40 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Workqueue: rcu_gp process_srcu RIP: 0010:srcu_readers_unlock_idx kernel/rcu/srcutree.c:473 [inline] RIP: 0010:srcu_readers_active_idx_check kernel/rcu/srcutree.c:489 [inline] RIP: 0010:try_check_zero+0x45a/0x4a0 kernel/rcu/srcutree.c:1108 Code: 8b 3d 7a c6 0e 0d e8 85 78 3a 0a e9 55 fd ff ff c6 05 01 99 7d 0e 01 90 48 c7 c7 c0 d6 0b 8c 48 8b 74 24 08 e8 67 28 db ff 90 <0f> 0b 90 90 e9 57 fe ff ff c6 05 df 98 7d 0e 01 90 48 c7 c7 c0 d6 RSP: 0018:ffffc900034efa50 EFLAGS: 00010246 RAX: 3561385088340b00 RBX: ffffe8ffffd57820 RCX: ffff888075a45a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81601962 R09: fffffbfff1cfa210 R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: ffff888068604390 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000009 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee10b2d000 CR3: 000000003263a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> srcu_advance_state kernel/rcu/srcutree.c:1724 [inline] process_srcu+0x11f/0x12e0 kernel/rcu/srcutree.c:1851 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at [email protected]. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
