syzbot


kernel BUG in rxrpc_release_call (2)

Status: upstream: reported on 2022/12/29 19:12
Reported-by: syzbot+e77b2d97f80a321039c6@syzkaller.appspotmail.com
First crash: 476d, last: 410d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel BUG in rxrpc_release_call 2 701d 782d 0/1 auto-obsoleted due to no activity on 2022/09/16 06:10

Sample crash report:
rxrpc: Assertion failed - 6(0x6) == 12(0xc) is false
------------[ cut here ]------------
kernel BUG at net/rxrpc/call_object.c:494!
syz-executor.4 (23481) used greatest stack depth: 21880 bytes left
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9336 Comm: kworker/0:3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: kafsd afs_delete_async_call
RIP: 0010:rxrpc_release_call.cold+0x2a/0x2c net/rxrpc/call_object.c:494
Code: e8 99 c8 4e f9 44 89 e6 41 b9 0c 00 00 00 41 b8 0c 00 00 00 48 c7 c1 00 c8 61 89 48 89 f2 48 c7 c7 40 c8 61 89 e8 df f9 df ff <0f> 0b e8 6d c8 4e f9 48 c7 c7 a0 d1 61 89 e8 cc f9 df ff 0f 0b e8
RSP: 0018:ffff888047fffc60 EFLAGS: 00010282
RAX: 0000000000000034 RBX: ffff8880a1ecd1c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1008ffff7e
RBP: ffff8880948b7680 R08: 0000000000000034 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000006
R13: ffff8880992cb6f0 R14: ffffffff87569543 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fbe064b00 CR3: 00000000b31c8000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rxrpc_kernel_end_call+0x53/0x100 net/rxrpc/af_rxrpc.c:355
 afs_put_call+0x236/0xa40 fs/afs/rxrpc.c:171
 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
audit: type=1804 audit(1678072243.050:196): pid=23478 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir965867026/syzkaller.gQqt7T/658/bus" dev="sda1" ino=14052 res=1
Modules linked in:
---[ end trace ff743af8959b0034 ]---
RIP: 0010:rxrpc_release_call.cold+0x2a/0x2c net/rxrpc/call_object.c:494
Code: e8 99 c8 4e f9 44 89 e6 41 b9 0c 00 00 00 41 b8 0c 00 00 00 48 c7 c1 00 c8 61 89 48 89 f2 48 c7 c7 40 c8 61 89 e8 df f9 df ff <0f> 0b e8 6d c8 4e f9 48 c7 c7 a0 d1 61 89 e8 cc f9 df ff 0f 0b e8
RSP: 0018:ffff888047fffc60 EFLAGS: 00010282
RAX: 0000000000000034 RBX: ffff8880a1ecd1c0 RCX: 0000000000000000
audit: type=1800 audit(1678072243.300:197): pid=23511 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.0" name="cgroup.controllers" dev="sda1" ino=13990 res=0
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1008ffff7e
RBP: ffff8880948b7680 R08: 0000000000000034 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000006
R13: ffff8880992cb6f0 R14: ffffffff87569543 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb8426c1b8 CR3: 000000009f501000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/06 03:10 linux-4.19.y 3f8a27f9e27b f8902b57 .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in rxrpc_release_call
2022/12/29 19:11 linux-4.19.y 3f8a27f9e27b 44712fbc .config console log report info [disk image] [vmlinux] ci2-linux-4-19 kernel BUG in rxrpc_release_call
* Struck through repros no longer work on HEAD.