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Message-ID: <202409180928.f20b5a08-oliver.sang@intel.com>
Date: Wed, 18 Sep 2024 10:18:23 +0800
From: kernel test robot <oliver.sang@...el.com>
To: David Howells <dhowells@...hat.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
Christian Brauner <brauner@...nel.org>, Jeff Layton <jlayton@...nel.org>,
<netfs@...ts.linux.dev>, <linux-fsdevel@...r.kernel.org>,
<oliver.sang@...el.com>
Subject: [linus:master] [netfs] cd0277ed0c:
BUG:KASAN:slab-use-after-free_in_copy_from_iter
Hello,
kernel test robot noticed "BUG:KASAN:slab-use-after-free_in_copy_from_iter" on:
commit: cd0277ed0c188dd40e7744e89299af7b78831ca4 ("netfs: Use new folio_queue data type and iterator instead of xarray iter")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master a430d95c5efa2b545d26a094eb5f624e36732af0]
[test failed on linux-next/master 7083504315d64199a329de322fce989e1e10f4f7]
in testcase: xfstests
version: xfstests-x86_64-b1465280-1_20240909
with following parameters:
disk: 4HDD
fs: ext4
fs2: smbv2
test: generic-group-11
compiler: gcc-12
test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202409180928.f20b5a08-oliver.sang@intel.com
[ 461.422026][ T2594] BUG: KASAN: slab-use-after-free in _copy_from_iter (include/linux/iov_iter.h:157 include/linux/iov_iter.h:308 include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260)
[ 461.429760][ T2594] Read of size 8 at addr ffff8881ec497520 by task aio-stress/2594
[ 461.437419][ T2594]
[ 461.439617][ T2594] CPU: 2 UID: 0 PID: 2594 Comm: aio-stress Not tainted 6.11.0-rc6-00065-gcd0277ed0c18 #1
[ 461.449270][ T2594] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.8.1 12/05/2017
[ 461.457360][ T2594] Call Trace:
[ 461.460504][ T2594] <TASK>
[ 461.463295][ T2594] dump_stack_lvl (lib/dump_stack.c:122 (discriminator 1))
[ 461.467658][ T2594] print_address_description+0x2c/0x3a0
[ 461.474100][ T2594] ? _copy_from_iter (include/linux/iov_iter.h:157 include/linux/iov_iter.h:308 include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260)
[ 461.479060][ T2594] print_report (mm/kasan/report.c:489)
[ 461.483327][ T2594] ? kasan_addr_to_slab (mm/kasan/common.c:37)
[ 461.488112][ T2594] ? _copy_from_iter (include/linux/iov_iter.h:157 include/linux/iov_iter.h:308 include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260)
[ 461.493071][ T2594] kasan_report (mm/kasan/report.c:603)
[ 461.497337][ T2594] ? _copy_from_iter (include/linux/iov_iter.h:157 include/linux/iov_iter.h:308 include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260)
[ 461.502295][ T2594] _copy_from_iter (include/linux/iov_iter.h:157 include/linux/iov_iter.h:308 include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260)
[ 461.507081][ T2594] ? __pfx_try_charge_memcg (mm/memcontrol.c:2158)
[ 461.512301][ T2594] ? __pfx__copy_from_iter (lib/iov_iter.c:254)
[ 461.517445][ T2594] ? __mod_memcg_state (mm/memcontrol.c:555 mm/memcontrol.c:669)
[ 461.522420][ T2594] ? check_heap_object (arch/x86/include/asm/bitops.h:206 arch/x86/include/asm/bitops.h:238 include/asm-generic/bitops/instrumented-non-atomic.h:142 include/linux/page-flags.h:827 include/linux/page-flags.h:848 include/linux/mm.h:1126 include/linux/mm.h:2142 mm/usercopy.c:199)
[ 461.527414][ T2594] ? 0xffffffff81000000
[ 461.531417][ T2594] ? __check_object_size (mm/memremap.c:167)
[ 461.537080][ T2594] skb_do_copy_data_nocache (include/linux/uio.h:219 include/linux/uio.h:236 include/net/sock.h:2167)
[ 461.542472][ T2594] ? __pfx_skb_do_copy_data_nocache (include/net/sock.h:2158)
[ 461.548385][ T2594] ? __sk_mem_schedule (net/core/sock.c:3194)
[ 461.553191][ T2594] tcp_sendmsg_locked (include/net/sock.h:2195 net/ipv4/tcp.c:1218)
[ 461.558236][ T2594] ? cifs_strict_fsync (fs/smb/client/cifsglob.h:1577 fs/smb/client/file.c:2658) cifs
[ 461.563805][ T2594] ? __x64_sys_fsync (include/linux/file.h:47 fs/sync.c:213 fs/sync.c:220 fs/sync.c:218 fs/sync.c:218)
[ 461.568431][ T2594] ? __pfx_tcp_sendmsg_locked (net/ipv4/tcp.c:1049)
[ 461.573822][ T2594] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 461.578348][ T2594] ? _raw_spin_lock_bh (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178)
[ 461.583134][ T2594] ? __pfx__raw_spin_lock_bh (kernel/locking/spinlock.c:177)
[ 461.588464][ T2594] tcp_sendmsg (net/ipv4/tcp.c:1355)
[ 461.592569][ T2594] sock_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:768)
[ 461.596921][ T2594] ? stack_trace_save (kernel/stacktrace.c:123)
[ 461.601618][ T2594] ? __pfx_sock_sendmsg (net/socket.c:757)
[ 461.606491][ T2594] ? recalc_sigpending (arch/x86/include/asm/bitops.h:75 include/asm-generic/bitops/instrumented-atomic.h:42 include/linux/thread_info.h:94 kernel/signal.c:178 kernel/signal.c:175)
[ 461.611464][ T2594] smb_send_kvec (fs/smb/client/transport.c:215) cifs
[ 461.616599][ T2594] __smb_send_rqst (fs/smb/client/transport.c:361) cifs
[ 461.621910][ T2594] ? __pfx___smb_send_rqst (fs/smb/client/transport.c:274) cifs
[ 461.627741][ T2594] ? __pfx_mempool_alloc_noprof (mm/mempool.c:385)
[ 461.633311][ T2594] ? __asan_memset (mm/kasan/shadow.c:84)
[ 461.637750][ T2594] ? _raw_spin_lock (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154)
[ 461.642275][ T2594] ? __pfx__raw_spin_lock (kernel/locking/spinlock.c:153)
[ 461.647320][ T2594] ? smb2_setup_async_request (fs/smb/client/smb2transport.c:903) cifs
[ 461.653633][ T2594] cifs_call_async (fs/smb/client/transport.c:841) cifs
[ 461.658940][ T2594] ? __pfx_cifs_call_async (fs/smb/client/transport.c:787) cifs
[ 461.664762][ T2594] ? _raw_spin_lock (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154)
[ 461.669288][ T2594] ? __asan_memset (mm/kasan/shadow.c:84)
[ 461.673740][ T2594] ? __smb2_plain_req_init (arch/x86/include/asm/atomic.h:53 include/linux/atomic/atomic-arch-fallback.h:992 include/linux/atomic/atomic-instrumented.h:436 fs/smb/client/smb2pdu.c:555) cifs
[ 461.679842][ T2594] smb2_async_writev (fs/smb/client/smb2pdu.c:5026) cifs
[ 461.685454][ T2594] ? __pfx_smb2_async_writev (fs/smb/client/smb2pdu.c:4894) cifs
[ 461.691472][ T2594] ? _raw_spin_lock (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154)
[ 461.696006][ T2594] ? __pfx__raw_spin_lock_bh (kernel/locking/spinlock.c:177)
[ 461.701323][ T2594] ? cifs_prepare_write (fs/smb/client/file.c:77) cifs
[ 461.707116][ T2594] ? netfs_advance_write (fs/netfs/write_issue.c:300)
[ 461.712257][ T2594] netfs_advance_write (fs/netfs/write_issue.c:300)
[ 461.717218][ T2594] ? netfs_buffer_append_folio (arch/x86/include/asm/bitops.h:206 (discriminator 3) arch/x86/include/asm/bitops.h:238 (discriminator 3) include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 3) include/linux/page-flags.h:827 (discriminator 3) include/linux/page-flags.h:848 (discriminator 3) include/linux/mm.h:1126 (discriminator 3) include/linux/folio_queue.h:102 (discriminator 3) fs/netfs/misc.c:43 (discriminator 3))
[ 461.722870][ T2594] netfs_write_folio (fs/netfs/write_issue.c:468)
[ 461.727743][ T2594] ? writeback_iter (mm/page-writeback.c:2591)
[ 461.732460][ T2594] netfs_writepages (fs/netfs/write_issue.c:540)
[ 461.737161][ T2594] ? __pfx_netfs_writepages (fs/netfs/write_issue.c:499)
[ 461.742379][ T2594] ? copy_page_from_iter_atomic (arch/x86/include/asm/uaccess_64.h:110 arch/x86/include/asm/uaccess_64.h:125 lib/iov_iter.c:55 include/linux/iov_iter.h:30 include/linux/iov_iter.h:300 include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:481)
[ 461.748225][ T2594] do_writepages (mm/page-writeback.c:2683)
[ 461.752665][ T2594] ? inode_maybe_inc_iversion (arch/x86/include/asm/atomic64_64.h:101 include/linux/atomic/atomic-arch-fallback.h:4256 include/linux/atomic/atomic-instrumented.h:2858 fs/libfs.c:2020)
[ 461.758140][ T2594] ? __pfx_do_writepages (mm/page-writeback.c:2673)
[ 461.763099][ T2594] ? __pfx___might_resched (kernel/sched/core.c:8418)
[ 461.768230][ T2594] ? shmem_write_end (arch/x86/include/asm/atomic.h:67 include/linux/atomic/atomic-arch-fallback.h:2278 include/linux/atomic/atomic-instrumented.h:1384 include/linux/page_ref.h:205 include/linux/mm.h:1152 include/linux/mm.h:1157 include/linux/mm.h:1489 mm/shmem.c:2934)
[ 461.773015][ T2594] ? balance_dirty_pages_ratelimited_flags (mm/page-writeback.c:2084)
[ 461.779621][ T2594] ? _raw_spin_lock (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154)
[ 461.784146][ T2594] ? __pfx__raw_spin_lock (kernel/locking/spinlock.c:153)
[ 461.789190][ T2594] ? generic_perform_write (mm/filemap.c:4044)
[ 461.794495][ T2594] ? wbc_attach_and_unlock_inode (arch/x86/include/asm/jump_label.h:27 include/linux/backing-dev.h:176 fs/fs-writeback.c:737)
[ 461.800236][ T2594] filemap_fdatawrite_wbc (mm/filemap.c:398 mm/filemap.c:387)
[ 461.805469][ T2594] __filemap_fdatawrite_range (mm/filemap.c:422)
[ 461.810860][ T2594] ? __pfx___filemap_fdatawrite_range (mm/filemap.c:422)
[ 461.816951][ T2594] ? mutex_unlock (arch/x86/include/asm/atomic64_64.h:101 include/linux/atomic/atomic-arch-fallback.h:4329 include/linux/atomic/atomic-long.h:1506 include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:181 kernel/locking/mutex.c:545)
[ 461.821303][ T2594] ? __pfx_mutex_unlock (kernel/locking/mutex.c:543)
[ 461.826174][ T2594] file_write_and_wait_range (mm/filemap.c:788)
[ 461.831566][ T2594] cifs_strict_fsync (fs/smb/client/file.c:2660) cifs
[ 461.836956][ T2594] __x64_sys_fsync (include/linux/file.h:47 fs/sync.c:213 fs/sync.c:220 fs/sync.c:218 fs/sync.c:218)
[ 461.841414][ T2594] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 461.845780][ T2594] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 461.851526][ T2594] RIP: 0033:0x7f8302baab10
[ 461.855793][ T2594] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 80 3d d1 ba 0d 00 00 74 17 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
All code
========
0: 00 f7 add %dh,%bh
2: d8 64 89 01 fsubs 0x1(%rcx,%rcx,4)
6: 48 83 c8 ff or $0xffffffffffffffff,%rax
a: c3 retq
b: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
12: 00 00 00
15: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
1a: 80 3d d1 ba 0d 00 00 cmpb $0x0,0xdbad1(%rip) # 0xdbaf2
21: 74 17 je 0x3a
23: b8 4a 00 00 00 mov $0x4a,%eax
28: 0f 05 syscall
2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction
30: 77 48 ja 0x7a
32: c3 retq
33: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
3a: 48 83 ec 18 sub $0x18,%rsp
3e: 89 .byte 0x89
3f: 7c .byte 0x7c
Code starting with the faulting instruction
===========================================
0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
6: 77 48 ja 0x50
8: c3 retq
9: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
10: 48 83 ec 18 sub $0x18,%rsp
14: 89 .byte 0x89
15: 7c .byte 0x7c
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240918/202409180928.f20b5a08-oliver.sang@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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