BUG: TASK stack guard page was hit at ffffc900059e7ff8 (stack is ffffc900059e8000..ffffc900059f0000) Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 UID: 0 PID: 5936 Comm: iou-wrk-5934 Not tainted 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:mark_lock+0xb0/0xc60 kernel/locking/lockdep.c:4727 Code: fe 09 0f 87 e3 00 00 00 41 83 fe 08 49 89 fc 48 89 f3 0f 84 97 00 00 00 41 bd 01 00 00 00 44 89 f1 41 d3 e5 4d 63 ed 48 89 df 0b 6a ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 60 48 89 f9 RSP: 0018:ffffc900059e8000 EFLAGS: 00010006 RAX: 0000000000000000 RBX: ffff88802a2b53b0 RCX: 0000000000000008 RDX: 0000000000000002 RSI: ffff88802a2b53b0 RDI: ffff88802a2b53b0 RBP: ffffc900059e8140 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff96e51cc7 R11: 0000000000000001 R12: ffff88802a2b4880 R13: 0000000000000100 R14: 0000000000000008 R15: 1ffff92000b3d006 FS: 00005555675fe380(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc900059e7ff8 CR3: 00000000324c4000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <#DF> mark_usage kernel/locking/lockdep.c:4670 [inline] __lock_acquire+0x9f1/0x3c40 kernel/locking/lockdep.c:5180 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 rmqueue_bulk mm/page_alloc.c:2309 [inline] __rmqueue_pcplist+0x6bb/0x1600 mm/page_alloc.c:3003 rmqueue_pcplist mm/page_alloc.c:3045 [inline] rmqueue mm/page_alloc.c:3076 [inline] get_page_from_freelist+0x3d2/0x2f80 mm/page_alloc.c:3473 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2589 [inline] new_slab+0x2c9/0x410 mm/slub.c:2642 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] __do_kmalloc_node mm/slub.c:4297 [inline] __kmalloc_noprof+0x2ec/0x510 mm/slub.c:4310 kmalloc_noprof include/linux/slab.h:905 [inline] p9_fcall_init+0x97/0x260 net/9p/client.c:233 p9_tag_alloc+0x21c/0x870 net/9p/client.c:300 p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644 p9_client_rpc+0x1c3/0xc10 net/9p/client.c:691 p9_client_flush.isra.0+0x1ff/0x420 net/9p/client.c:609 p9_client_zc_rpc.constprop.0+0x7d2/0x880 net/9p/client.c:826 p9_client_read_once+0x443/0x820 net/9p/client.c:1570 p9_client_read+0x13f/0x1b0 net/9p/client.c:1534 v9fs_issue_read+0x115/0x340 fs/9p/vfs_addr.c:76 netfs_retry_read_subrequests fs/netfs/read_retry.c:62 [inline] netfs_retry_reads+0x1508/0x1d40 fs/netfs/read_retry.c:234 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_retry_reads+0x159a/0x1d40 fs/netfs/read_retry.c:237 netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:374 netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:409 netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:103 [inline] netfs_unbuffered_read fs/netfs/direct_read.c:127 [inline] netfs_unbuffered_read_iter_locked+0x12e1/0x19a0 fs/netfs/direct_read.c:221 netfs_unbuffered_read_iter+0xc5/0x100 fs/netfs/direct_read.c:256 v9fs_file_read_iter+0xbf/0x100 fs/9p/vfs_file.c:361 io_iter_do_read io_uring/rw.c:770 [inline] __io_read+0x320/0x1190 io_uring/rw.c:869 io_read+0x1e/0x70 io_uring/rw.c:947 io_issue_sqe+0x175/0x1200 io_uring/io_uring.c:1740 io_wq_submit_work+0x3fc/0xec0 io_uring/io_uring.c:1849 io_worker_handle_work+0x4e5/0x1680 io_uring/io-wq.c:601 io_wq_worker+0x33f/0xdf0 io_uring/io-wq.c:655 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mark_lock+0xb0/0xc60 kernel/locking/lockdep.c:4727 Code: fe 09 0f 87 e3 00 00 00 41 83 fe 08 49 89 fc 48 89 f3 0f 84 97 00 00 00 41 bd 01 00 00 00 44 89 f1 41 d3 e5 4d 63 ed 48 89 df 0b 6a ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 60 48 89 f9 RSP: 0018:ffffc900059e8000 EFLAGS: 00010006 RAX: 0000000000000000 RBX: ffff88802a2b53b0 RCX: 0000000000000008 RDX: 0000000000000002 RSI: ffff88802a2b53b0 RDI: ffff88802a2b53b0 RBP: ffffc900059e8140 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff96e51cc7 R11: 0000000000000001 R12: ffff88802a2b4880 R13: 0000000000000100 R14: 0000000000000008 R15: 1ffff92000b3d006 FS: 00005555675fe380(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc900059e7ff8 CR3: 00000000324c4000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: fe 09 decb (%rcx) 2: 0f 87 e3 00 00 00 ja 0xeb 8: 41 83 fe 08 cmp $0x8,%r14d c: 49 89 fc mov %rdi,%r12 f: 48 89 f3 mov %rsi,%rbx 12: 0f 84 97 00 00 00 je 0xaf 18: 41 bd 01 00 00 00 mov $0x1,%r13d 1e: 44 89 f1 mov %r14d,%ecx 21: 41 d3 e5 shl %cl,%r13d 24: 4d 63 ed movslq %r13d,%r13 27: 48 89 df mov %rbx,%rdi * 2a: e8 0b 6a ff ff call 0xffff6a3a <-- trapping instruction 2f: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 36: fc ff df 39: 48 8d 78 60 lea 0x60(%rax),%rdi 3d: 48 89 f9 mov %rdi,%rcx