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WARNING: CPU: 1 PID: 572 at drivers/block/ublk_drv.c:1579 ublk_uring_cmd_cancel_fn+0x34f/0x410 drivers/block/ublk_drv.c:1579
Modules linked in:
CPU: 1 UID: 0 PID: 572 Comm: kworker/u8:7 Not tainted syzkaller #0 8d85372ea85b8b58e113dd235868dd27b02ab40e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:ublk_uring_cmd_cancel_fn+0x34f/0x410 drivers/block/ublk_drv.c:1579
Code: 5d e9 95 be 54 02 cc e8 8f 48 32 fe 0f 0b eb e3 e8 86 48 32 fe 0f 0b eb da e8 7d 48 32 fe 0f 0b e9 4d fe ff ff e8 71 48 32 fe <0f> 0b eb c5 44 89 e1 80 e1 07 fe c1 38 c1 0f 8c 0c fd ff ff 4c 89
RSP: 0018:ffffc90010dbf990 EFLAGS: 00010293
RAX: ffffffff8355742f RBX: 1ffff11021a4b3bd RCX: ffff88811e2c0000
RDX: 0000000000000000 RSI: 00000000000002ff RDI: 00000000000003c9
RBP: ffffc90010dbf9e0 R08: 0000000000000003 R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff83556410 R12: ffff888119d4b900
R13: ffff88810d259dc0 R14: ffff88811cbf0000 R15: ffff88811cbf0010
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f93b85f40 CR3: 00000000074aa000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ublk_ch_uring_cmd+0x6f/0xa0 drivers/block/ublk_drv.c:1975
 io_uring_try_cancel_uring_cmd+0x19e/0x280 io_uring/uring_cmd.c:68
 io_uring_try_cancel_requests+0x4ce/0x5a5 io_uring/io_uring.c:3192
 io_ring_exit_work+0x23c/0x83b io_uring/io_uring.c:2978
 process_one_work kernel/workqueue.c:3261 [inline]
 process_scheduled_works+0x7d4/0x1020 kernel/workqueue.c:3342
 worker_thread+0xc51/0x1370 kernel/workqueue.c:3423
 kthread+0x2c9/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
---[ end trace 0000000000000000 ]---