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Mainline Linux tree for various devices, only for fun :)
d0e60206be
This patch replaces rcu_deference() with rcu_dereference_bh() in
ipv6_route_seq_next() to avoid the following warning:
[ 19.431685] WARNING: suspicious RCU usage
[ 19.433451] 4.14.0-rc3-00914-g66f5d6c #118 Not tainted
[ 19.435509] -----------------------------
[ 19.437267] net/ipv6/ip6_fib.c:2259 suspicious
rcu_dereference_check() usage!
[ 19.440790]
[ 19.440790] other info that might help us debug this:
[ 19.440790]
[ 19.444734]
[ 19.444734] rcu_scheduler_active = 2, debug_locks = 1
[ 19.447757] 2 locks held by odhcpd/3720:
[ 19.449480] #0: (&p->lock){+.+.}, at: [<ffffffffb1231f7d>]
seq_read+0x3c/0x333
[ 19.452720] #1: (rcu_read_lock_bh){....}, at: [<ffffffffb1d2b984>]
ipv6_route_seq_start+0x5/0xfd
[ 19.456323]
[ 19.456323] stack backtrace:
[ 19.458812] CPU: 0 PID: 3720 Comm: odhcpd Not tainted
4.14.0-rc3-00914-g66f5d6c #118
[ 19.462042] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.10.2-1 04/01/2014
[ 19.465414] Call Trace:
[ 19.466788] dump_stack+0x86/0xc0
[ 19.468358] lockdep_rcu_suspicious+0xea/0xf3
[ 19.470183] ipv6_route_seq_next+0x71/0x164
[ 19.471963] seq_read+0x244/0x333
[ 19.473522] proc_reg_read+0x48/0x67
[ 19.475152] ? proc_reg_write+0x67/0x67
[ 19.476862] __vfs_read+0x26/0x10b
[ 19.478463] ? __might_fault+0x37/0x84
[ 19.480148] vfs_read+0xba/0x146
[ 19.481690] SyS_read+0x51/0x8e
[ 19.483197] do_int80_syscall_32+0x66/0x15a
[ 19.484969] entry_INT80_compat+0x32/0x50
[ 19.486707] RIP: 0023:0xf7f0be8e
[ 19.488244] RSP: 002b:00000000ffa75d04 EFLAGS: 00000246 ORIG_RAX:
0000000000000003
[ 19.491431] RAX: ffffffffffffffda RBX: 0000000000000009 RCX:
0000000008056068
[ 19.493886] RDX: 0000000000001000 RSI: 0000000008056008 RDI:
0000000000001000
[ 19.496331] RBP: 00000000000001ff R08: 0000000000000000 R09:
0000000000000000
[ 19.498768] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[ 19.501217] R13: 0000000000000000 R14: 0000000000000000 R15:
0000000000000000
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.