On Mon, 14 Oct 2024 at 08:01, syzbot <syzbot+0e1748603cc9f2dfc87d@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 27cc6fdf7201 Merge tag 'linux_kselftest-fixes-6.12-rc2' of.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13043307980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e3e4d87a80ed4297 > dashboard link: https://syzkaller.appspot.com/bug?extid=0e1748603cc9f2dfc87d > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > userspace arch: i386 > > Unfortunately, I don't have any reproducer for this issue yet. > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-27cc6fdf.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/ae2f7d656e32/vmlinux-27cc6fdf.xz > kernel image: https://storage.googleapis.com/syzbot-assets/1b06a62cc1e5/bzImage-27cc6fdf.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+0e1748603cc9f2dfc87d@xxxxxxxxxxxxxxxxxxxxxxxxx > > BUG: TASK stack guard page was hit at ffffc90002b3ffb8 (stack is ffffc90002b40000..ffffc90002b48000) > Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN NOPTI > CPU: 0 UID: 0 PID: 12425 Comm: syz.2.2179 Not tainted 6.12.0-rc1-syzkaller-00306-g27cc6fdf7201 #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+0x25/0xc60 kernel/locking/lockdep.c:4686 > Code: 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 89 d6 48 ba 00 00 00 00 00 fc ff df 41 55 41 54 53 48 83 e4 f0 48 81 ec 10 01 00 00 <48> c7 44 24 30 b3 8a b5 41 48 8d 44 24 30 48 c7 44 24 38 38 51 57 > RSP: 0018:ffffc90002b3ffc0 EFLAGS: 00010086 > RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000003 > RDX: dffffc0000000000 RSI: ffff888021edaf98 RDI: ffff888021eda440 > RBP: ffffc90002b40100 R08: 0000000000000000 R09: 0000000000000006 > R10: ffffffff9698ad37 R11: 0000000000000002 R12: dffffc0000000000 > R13: ffff888021edaf98 R14: 0000000000000008 R15: ffff888021eda440 > FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f56f6b40 > CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 > CR2: ffffc90002b3ffb8 CR3: 000000005f61e000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <#DF> > </#DF> > <TASK> > mark_usage kernel/locking/lockdep.c:4646 [inline] > __lock_acquire+0x906/0x3ce0 kernel/locking/lockdep.c:5156 > lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 > rcu_lock_acquire include/linux/rcupdate.h:337 [inline] > rcu_read_lock include/linux/rcupdate.h:849 [inline] > page_ext_get+0x3a/0x310 mm/page_ext.c:525 > __set_page_owner+0x9a/0x790 mm/page_owner.c:322 > set_page_owner include/linux/page_owner.h:32 [inline] > post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1537 > prep_new_page mm/page_alloc.c:1545 [inline] > get_page_from_freelist+0x101e/0x3070 mm/page_alloc.c:3457 > __alloc_pages_noprof+0x223/0x25c0 mm/page_alloc.c:4733 > alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2265 > alloc_slab_page mm/slub.c:2412 [inline] > allocate_slab mm/slub.c:2578 [inline] > new_slab+0x2ba/0x3f0 mm/slub.c:2631 > ___slab_alloc+0xd1d/0x16f0 mm/slub.c:3818 > __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3908 > __slab_alloc_node mm/slub.c:3961 [inline] > slab_alloc_node mm/slub.c:4122 [inline] > kmem_cache_alloc_noprof+0x2ae/0x2f0 mm/slub.c:4141 > p9_tag_alloc+0x9c/0x870 net/9p/client.c:281 > p9_client_prepare_req+0x19f/0x4d0 net/9p/client.c:644 > p9_client_zc_rpc.constprop.0+0x105/0x880 net/9p/client.c:793 > p9_client_read_once+0x443/0x820 net/9p/client.c:1560 > p9_client_read+0x13f/0x1b0 net/9p/client.c:1524 > v9fs_issue_read+0x115/0x310 fs/9p/vfs_addr.c:74 > netfs_retry_read_subrequests fs/netfs/read_retry.c:60 [inline] > netfs_retry_reads+0x153a/0x1d00 fs/netfs/read_retry.c:232 +netfs maintainers, looks like infinite recursion in netfs code #syz set subsystems: netfs > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > netfs_retry_reads+0x155e/0x1d00 fs/netfs/read_retry.c:235 > netfs_rreq_assess+0x5d3/0x870 fs/netfs/read_collect.c:369 > netfs_rreq_terminated+0xe5/0x110 fs/netfs/read_collect.c:405 > 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+0x12f6/0x19b0 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 > __kernel_read+0x3f1/0xb50 fs/read_write.c:527 > integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:28 > ima_calc_file_hash_tfm+0x2c9/0x3e0 security/integrity/ima/ima_crypto.c:480 > ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] > ima_calc_file_hash+0x1ba/0x490 security/integrity/ima/ima_crypto.c:568 > ima_collect_measurement+0x8a7/0xa10 security/integrity/ima/ima_api.c:293 > process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372 > ima_file_check+0xc1/0x110 security/integrity/ima/ima_main.c:572 > security_file_post_open+0x8e/0x210 security/security.c:3127 > do_open fs/namei.c:3776 [inline] > path_openat+0x1419/0x2d60 fs/namei.c:3933 > do_filp_open+0x1dc/0x430 fs/namei.c:3960 > do_sys_openat2+0x17a/0x1e0 fs/open.c:1415 > do_sys_open fs/open.c:1430 [inline] > __do_compat_sys_open fs/open.c:1481 [inline] > __se_compat_sys_open fs/open.c:1479 [inline] > __ia32_compat_sys_open+0x147/0x1e0 fs/open.c:1479 > do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] > __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 > do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 > entry_SYSENTER_compat_after_hwframe+0x84/0x8e > RIP: 0023:0xf740e579 > Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 > RSP: 002b:00000000f56f656c EFLAGS: 00000296 ORIG_RAX: 0000000000000005 > RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 0000000000000b00 > RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > </TASK> > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:mark_lock+0x25/0xc60 kernel/locking/lockdep.c:4686 > Code: 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 89 d6 48 ba 00 00 00 00 00 fc ff df 41 55 41 54 53 48 83 e4 f0 48 81 ec 10 01 00 00 <48> c7 44 24 30 b3 8a b5 41 48 8d 44 24 30 48 c7 44 24 38 38 51 57 > RSP: 0018:ffffc90002b3ffc0 EFLAGS: 00010086 > RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000003 > RDX: dffffc0000000000 RSI: ffff888021edaf98 RDI: ffff888021eda440 > RBP: ffffc90002b40100 R08: 0000000000000000 R09: 0000000000000006 > R10: ffffffff9698ad37 R11: 0000000000000002 R12: dffffc0000000000 > R13: ffff888021edaf98 R14: 0000000000000008 R15: ffff888021eda440 > FS: 0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f56f6b40 > CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 > CR2: ffffc90002b3ffb8 CR3: 000000005f61e000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > ---------------- > Code disassembly (best guess): > 0: 90 nop > 1: 90 nop > 2: 90 nop > 3: 90 nop > 4: 90 nop > 5: 55 push %rbp > 6: 48 89 e5 mov %rsp,%rbp > 9: 41 57 push %r15 > b: 41 56 push %r14 > d: 41 89 d6 mov %edx,%r14d > 10: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx > 17: fc ff df > 1a: 41 55 push %r13 > 1c: 41 54 push %r12 > 1e: 53 push %rbx > 1f: 48 83 e4 f0 and $0xfffffffffffffff0,%rsp > 23: 48 81 ec 10 01 00 00 sub $0x110,%rsp > * 2a: 48 c7 44 24 30 b3 8a movq $0x41b58ab3,0x30(%rsp) <-- trapping instruction > 31: b5 41 > 33: 48 8d 44 24 30 lea 0x30(%rsp),%rax > 38: 48 rex.W > 39: c7 .byte 0xc7 > 3a: 44 24 38 rex.R and $0x38,%al > 3d: 38 51 57 cmp %dl,0x57(%rcx) > > > --- > 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 syzkaller@xxxxxxxxxxxxxxxx. > > 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 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 > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/670cb3bd.050a0220.4cbc0.0040.GAE%40google.com.
