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lineage-21
8 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
| 4b6d521246 |
Merge tag 'v4.19.325-cip128' of https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip into android13-4.19-kona
version 4.19.325-cip128 * tag 'v4.19.325-cip128' of https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip: CIP: Bump version suffix to -cip128 after merge from cip/linux-4.19.y-st tree Update localversion-st, tree is up-to-date with 5.10.248. NFSv4: ensure the open stateid seqid doesn't go backwards libceph: make calc_target() set t->paused, not just clear it crypto: af_alg - zero initialize memory allocated via sock_kmalloc jbd2: fix the inconsistency between checksum and data in memory for journal sb f2fs: fix to detect recoverable inode during dryrun of find_fsync_dnodes() NFS: add barriers when testing for NFS_FSDATA_BLOCKED NFS: unlink/rmdir shouldn't call d_delete() twice on ENOENT efi/cper: Fix cper_bits_to_str buffer handling and return value iommu/omap: fix device leaks on probe_device() crypto: seqiv - Do not use req->iv after crypto_aead_encrypt f2fs: fix return value of f2fs_recover_fsync_data() ext4: improve integrity checking in __mb_check_buddy by enhancing order-0 validation ext4: remove unused return value of __mb_check_buddy clk: renesas: r9a06g032: Fix memory leak in error path nbd: defer config put in recv_work jbd2: avoid bug_on in jbd2_journal_get_create_access() when file system corrupted scsi: sg: Fix occasional bogus elapsed time that exceeds timeout powercap: fix sscanf() error return value handling powercap: fix race condition in register_control_type() arp: do not assume dev_hard_header() does not change skb->head net: usb: pegasus: fix memory leak in update_eth_regs_async() HID: quirks: work around VID/PID conflict for appledisplay netdev: preserve NETIF_F_ALL_FOR_ALL across TSO updates net: sock: fix hardened usercopy panic in sock_recv_errqueue inet: ping: Fix icmp out counting netfilter: nf_conncount: update last_gc only when GC has been performed ARM: dts: imx6q-ba16: fix RTC interrupt level scsi: ipr: Enable/disable IRQD_NO_BALANCING during reset alpha: don't reference obsolete termio struct for TC* constants ARM: 9461/1: Disable HIGHPTE on PREEMPT_RT kernels ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() ext4: introduce ITAIL helper libceph: make free_choose_arg_map() resilient to partial allocation libceph: replace overzealous BUG_ON in osdmap_apply_incremental() wifi: avoid kernel-infoleak from struct iw_point drm/pl111: Fix error handling in pl111_amba_probe net: 3com: 3c59x: fix possible null dereference in vortex_probe1() atm: Fix dma_free_coherent() size Revert "iommu/amd: Skip enabling command/event buffers for kdump" pwm: stm32: Always program polarity bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove() scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress scsi: iscsi: Move pool freeing wifi: mac80211: Discard Beacon frames to non-broadcast address media: samsung: exynos4-is: fix potential ABBA deadlock on init media: vpif_capture: fix section mismatch media: renesas: rcar_drif: fix device node reference leak in rcar_drif_bond_enabled SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf NFSD: Clear SECLABEL in the suppattr_exclcreat bitmap usb: ohci-nxp: fix device leak on probe failure usb: ohci-nxp: Use helper function devm_clk_get_enabled() f2fs: fix to avoid updating zero-sized extent in extent cache ext4: fix string copying in parse_apply_sb_mount_options() ALSA: wavefront: Fix integer overflow in sample size validation ALSA: wavefront: Clear substream pointers on close usb: gadget: udc: fix use-after-free in usb_gadget_state_work HID: core: Harden s32ton() against conversion to 0 bits ipv4: Fix uninit-value access in __ip_make_skb() ipv6: Fix potential uninit-value access in __ip6_make_skb() virtio_console: fix order of fields cols and rows drm/nouveau/dispnv50: Don't call drm_atomic_get_crtc_state() in prepare_fb net: nfc: fix deadlock between nfc_unregister_device and rfkill_fop_write net: usb: sr9700: fix incorrect command used to write single register fjes: Add missing iounmap in fjes_hw_init() e1000: fix OOB in e1000_tbi_should_accept() RDMA/core: Check for the presence of LS_NLA_TYPE_DGID correctly media: i2c: adv7842: Remove redundant cancel_delayed_work in probe media: i2c: ADV7604: Remove redundant cancel_delayed_work in probe media: TDA1997x: Remove redundant cancel_delayed_work in probe media: msp3400: Avoid possible out-of-bounds array accesses in msp3400c_thread() media: cec: Fix debugfs leak on bus_register() failure fbdev: tcx.c fix mem_map to correct smem_start offset fbdev: pxafb: Fix multiple clamped values in pxafb_adjust_timing fbdev: gbefb: fix to use physical address instead of dma address media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status() parisc: entry: set W bit for !compat tasks in syscall_restore_rfi() parisc: entry.S: fix space adjustment on interruption for 64-bit userspace media: rc: st_rc: Fix reset control resource leak PCI/PM: Reinstate clearing state_saved in legacy and !PM codepaths iommu/exynos: fix device leak on of_xlate() ASoC: qcom: qdsp6: q6asm-dai: set 10 ms period and buffer alignment. ASoC: qcom: q6adm: the the copp device only during last instance ASoC: qcom: q6asm-dai: perform correct state check before closing selftests/ftrace: traceonoff_triggers: strip off names RDMA/bnxt_re: fix dma_free_coherent() pointer net: rose: fix invalid array index in rose_kill_by_device() ipv4: Fix reference count leak when using error routes with nexthop objects ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() net: bridge: Describe @tunnel_hash member in net_bridge_vlan_group struct net: dsa: b53: skip multicast entries for fdb_dump() firewire: nosy: Fix dma_free_coherent() size firewire: nosy: switch from 'pci_' to 'dma_' API genalloc.h: fix htmldocs warning net: usb: rtl8150: fix memory leak on usb_submit_urb() failure team: fix check for port enabled in team_queue_override_port_prio_changed() platform/x86: ibm_rtl: fix EBDA signature search pointer arithmetic platform/x86: msi-laptop: add missing sysfs_remove_group() ip6_gre: make ip6gre_header() robust i40e: fix scheduling in set_rx_mode hwmon: (w83l786ng) Convert macros to functions to avoid TOCTOU hwmon: (w83791d) Convert macros to functions to avoid TOCTOU rpmsg: glink: fix rpmsg device leak amba: tegra-ahb: Fix device leak on SMMU enable nfsd: Mark variable __maybe_unused to avoid W=1 build break PM: runtime: Do not clear needs_force_resume with enabled runtime PM tracing: Do not register unsupported perf events KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer KVM: x86: Explicitly set new periodic hrtimer expiration in apic_timer_fn() KVM: x86: WARN if hrtimer callback for periodic APIC timer fires with period=0 libceph: make decode_pool() more resilient against corrupted osdmaps parisc: Do not reprogram affinitiy on ASP chip ocfs2: fix kernel BUG in ocfs2_find_victim_chain tools/testing/nvdimm: Use per-DIMM device handle f2fs: invalidate dentry cache on failed whiteout creation scsi: target: Reset t_task_cdb pointer in error case NFSD: use correct reservation type in nfsd4_scsi_fence_client scsi: aic94xx: fix use-after-free in device removal path cpufreq: nforce2: fix reference count leak in nforce2 char: applicom: fix NULL pointer dereference in ac_ioctl usb: renesas_usbhs: Fix a resource leak in usbhs_pipe_malloc() media: pvrusb2: Fix incorrect variable used in trace message media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg() usb: usb-storage: Maintain minimal modifications to the bcdDevice range. media: v4l2-mem2mem: Fix outdated documentation jbd2: use a weaker annotation in journal handling ext4: fix incorrect group number assertion in mb_check_buddy ext4: xattr: fix null pointer deref in ext4_raw_inode() ktest.pl: Fix uninitialized var in config-bisect.pl floppy: fix for PAGE_SIZE != 4KB usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive. usb: xhci: limit run_graceperiod for only usb 3.0 devices usb: typec: ucsi: Handle incorrect num_connectors capability via_wdt: fix critical boot hang due to unnamed resource allocation scsi: qla2xxx: Use reinit_completion on mbx_intr_comp powerpc/addnote: Fix overflow on 32-bit builds clk: mvebu: cp110 add CLK_IGNORE_UNUSED to pcie_x10, pcie_x11 & pcie_x4 ipmi: Fix __scan_channels() failing to rescan channels ipmi: Fix the race between __scan_channels() and deliver_response() ALSA: usb-mixer: us16x08: validate meter packet indices ALSA: pcmcia: Fix resource leak in snd_pdacf_probe error path ALSA: vxpocket: Fix resource leak in vxpocket_probe error path spi: fsl-cpm: Check length parity before switching to 16 bit mode Input: ti_am335x_tsc - fix off-by-one error in wire_order validation MIPS: Fix a reference leak bug in ip22_check_gio() hwmon: (ibmpex) fix use-after-free in high/low store net/mlx5: fw_tracer, Handle escaped percent properly net/mlx5: fw_tracer, Validate format string parameters net/mlx5: fw_tracer, Add support for unrecognized string nfc: pn533: Fix error code in pn533_acr122_poweron_rdr() caif: fix integer underflow in cffrml_receive() ipvs: fix ipv4 null-ptr-deref in route error path netfilter: nf_conncount: fix leaked ct in error paths broadcom: b44: prevent uninitialized value usage net: openvswitch: fix middle attribute validation in push_nsh() action mlxsw: spectrum_router: Fix neighbour use-after-free ipvlan: Ignore PACKET_LOOPBACK in handle_mode_l2() netrom: Fix memory leak in nr_sendmsg() btrfs: scrub: always update btrfs_scrub_progress::last_physical hfsplus: fix volume corruption issue for generic/073 hfsplus: Verify inode mode when loading from disk hfsplus: fix missing hfs_bnode_get() in __hfs_bnode_create hfsplus: fix volume corruption issue for generic/070 cpufreq: s5pv210: fix refcount leak ACPI: property: Use ACPI functions in acpi_graph_get_next_endpoint() only ACPICA: Avoid walking the Namespace if start_node is NULL netfilter: nft_connlimit: memleak if nf_ct_netns_get() fails netfilter: nf_conncount: garbage collection is not skipped when jiffies wrap around NFS: Fix missing unlock in nfs_unlink() ALSA: dice: fix buffer overflow in detect_stream_formats() usb: phy: Initialize struct usb_phy list_head ocfs2: fix memory leak in ocfs2_merge_rec_left() efi/cper: Adjust infopfx size to accept an extra space efi/cper: Add a new helper function to print bitmasks dm log-writes: Add missing set_freezable() for freezable kthread dm-raid: fix possible NULL dereference with undefined raid type ARM: 9464/1: fix input-only operand modification in load_unaligned_zeropad() ALSA: uapi: Fix typo in asound.h comment fs/nls: Fix inconsistency between utf8_to_utf32() and utf32_to_utf8() NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid fs/nls: Fix utf16 to utf8 conversion NFS: don't unhash dentry during unlink/rename NFS: Label the dentry with a verifier in nfs_rmdir() and nfs_unlink() fbdev: ssd1307fb: fix potential page leak in ssd1307fb_probe() pinctrl: single: Fix incorrect type for error return variable pinctrl: single: Fix PIN_CONFIG_BIAS_DISABLE handling perf tools: Fix split kallsyms DSO counting net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop mtd: lpddr_cmds: fix signed shifts in lpddr_cmds netfilter: nft_connlimit: update the count if add was skipped netfilter: nf_conncount: rework API to use sk_buff directly netfilter: nf_conncount: reduce unnecessary GC netfilter: nft_connlimit: move stateful fields out of expression data regulator: core: Protect regulator_supply_alias_list with regulator_list_mutex virtio: fix virtqueue_set_affinity() docs ACPI: processor_core: fix map_x2apic_id for amd-pstate on am4 backlight: lp855x: Fix lp855x.h kernel-doc warnings staging: fbtft: core: fix potential memory leak in fbtft_probe_common() usb: dwc2: fix hang during shutdown if set as peripheral usb: dwc2: disable platform lowlevel hw resources during shutdown usb: chaoskey: fix locking for O_NONBLOCK wifi: rtl818x: rtl8187: Fix potential buffer underflow in rtl8187_rx_cb() powerpc/64s/ptdump: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format NFSD/blocklayout: Fix minlength check in proc_layoutget scsi: sim710: Fix resource leak by adding missing ioport_unmap() calls ACPI: property: Fix fwnode refcount leak in acpi_fwnode_graph_parse_endpoint() ocfs2: relax BUG() to ocfs2_error() in __ocfs2_move_extent() nbd: defer config unlock in nbd_genl_connect wifi: cw1200: Fix potential memory leak in cw1200_bh_rx_helper() macintosh/mac_hid: fix race condition in mac_hid_toggle_emumouse scsi: stex: Fix reboot_notifier leak in probe error path perf/x86/intel: Correct large PEBS flag check ext4: correct the checking of quota files before moving extents ext4: minor defrag code improvements mfd: da9055: Fix missing regmap_del_irq_chip() in error path scsi: target: Do not write NUL characters into ASCII configfs output power: supply: apm_power: only unset own apm_get_power_status power: supply: wm831x: Check wm831x_set_bits() return value kmsan: introduce __no_sanitize_memory and __no_kmsan_checks compiler-gcc.h: Define __SANITIZE_ADDRESS__ under hwaddress sanitizer s390/smp: Fix fallback CPU detection crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id inet: Avoid ehash lookup race in inet_ehash_insert() rculist: Add hlist_nulls_replace_rcu() and hlist_nulls_replace_init_rcu() irqchip/qcom-irq-combiner: Fix section mismatch USB: Fix descriptor count when handling invalid MBIM extended descriptor drm/vgem-fence: Fix potential deadlock on release smack: fix bug: unprivileged task can create labels staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing comedi: multiq3: sanitize config options in multiq3_attach() comedi: c6xdigio: Fix invalid PNP driver unregistration platform/x86: acer-wmi: Ignore backlight event bfs: Reconstruct file type when loading from disk spi: imx: keep dma request disabled before dma transfer setup spi: xilinx: increase number of retries before declaring stall USB: serial: kobil_sct: fix TIOCMBIS and TIOCMBIC USB: serial: belkin_sa: fix TIOCMBIS and TIOCMBIC serial: add support of CPCI cards USB: serial: ftdi_sio: match on interface number for jtag USB: serial: option: move Telit 0x10c7 composition in the right place USB: serial: option: add Telit Cinterion FE910C04 new compositions USB: serial: option: add Foxconn T99W760 ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock() locking/spinlock/debug: Fix data-race in do_raw_write_lock ext4: refresh inline data size before write operations xfrm: flush all states in xfrm_state_fini xfrm: also call xfrm_state_delete_tunnel at destroy time for states that were never added Revert "xfrm: destroy xfrm_state synchronously on net exit path" xfrm: delete x->tunnel as we delete x Conflicts: drivers/rpmsg/qcom_glink_native.c drivers/usb/host/xhci-hub.c fs/f2fs/file.c fs/f2fs/super.c Change-Id: I9e00c074af0214588acc89a73fcfc928d1724b7a |
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| 431773cf42 |
locking/spinlock/debug: Fix data-race in do_raw_write_lock
commit c14ecb555c3ee80eeb030a4e46d00e679537f03a upstream.
KCSAN reports:
BUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock
write (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1:
do_raw_write_lock+0x120/0x204
_raw_write_lock_irq
do_exit
call_usermodehelper_exec_async
ret_from_fork
read to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0:
do_raw_write_lock+0x88/0x204
_raw_write_lock_irq
do_exit
call_usermodehelper_exec_async
ret_from_fork
value changed: 0xffffffff -> 0x00000001
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111
Commit 1a365e822372 ("locking/spinlock/debug: Fix various data races") has
adressed most of these races, but seems to be not consistent/not complete.
>From do_raw_write_lock() only debug_write_lock_after() part has been
converted to WRITE_ONCE(), but not debug_write_lock_before() part.
Do it now.
Fixes: 1a365e822372 ("locking/spinlock/debug: Fix various data races")
Reported-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Waiman Long <longman@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>
|
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| 9459964334 |
Merge android-4.19-q.95 (138a4a6) into msm-4.19
* refs/heads/tmp-138a4a6: Linux 4.19.95 usb: missing parentheses in USE_NEW_SCHEME USB: serial: option: add Telit ME910G1 0x110a composition USB: core: fix check for duplicate endpoints usb: dwc3: gadget: Fix request complete check net: sch_prio: When ungrafting, replace with FIFO mlxsw: spectrum_qdisc: Ignore grafting of invisible FIFO vlan: vlan_changelink() should propagate errors vlan: fix memory leak in vlan_dev_set_egress_priority vxlan: fix tos value before xmit tcp: fix "old stuff" D-SACK causing SACK to be treated as D-SACK sctp: free cmd->obj.chunk for the unprocessed SCTP_CMD_REPLY sch_cake: avoid possible divide by zero in cake_enqueue() pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM net: usb: lan78xx: fix possible skb leak net: stmmac: dwmac-sunxi: Allow all RGMII modes net: stmmac: dwmac-sun8i: Allow all RGMII modes net: dsa: mv88e6xxx: Preserve priority when setting CPU port. macvlan: do not assume mac_header is set in macvlan_broadcast() gtp: fix bad unlock balance in gtp_encap_enable_socket PCI/switchtec: Read all 64 bits of part_event_bitmap ARM: dts: imx6ul: use nvmem-cells for cpu speed grading cpufreq: imx6q: read OCOTP through nvmem for imx6ul/imx6ull powerpc/spinlocks: Include correct header for static key powerpc/vcpu: Assume dedicated processors as non-preempt hv_netvsc: Fix unwanted rx_table reset llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c) parisc: Fix compiler warnings in debug_core.c block: fix memleak when __blk_rq_map_user_iov() is failed s390/dasd: fix memleak in path handling error case s390/dasd/cio: Interpret ccw_device_get_mdc return value correctly drm/exynos: gsc: add missed component_del s390/purgatory: do not build purgatory with kcov, kasan and friends net: stmmac: Always arm TX Timer at end of transmission start net: stmmac: RX buffer size must be 16 byte aligned net: stmmac: xgmac: Clear previous RX buffer size net: stmmac: Do not accept invalid MTU values fs: avoid softlockups in s_inodes iterators perf/x86/intel: Fix PT PMI handling kconfig: don't crash on NULL expressions in expr_eq() iommu/iova: Init the struct iova to fix the possible memleak regulator: rn5t618: fix module aliases ASoC: wm8962: fix lambda value rfkill: Fix incorrect check to avoid NULL pointer dereference parisc: add missing __init annotation net: usb: lan78xx: Fix error message format specifier cxgb4: Fix kernel panic while accessing sge_info bnx2x: Fix logic to get total no. of PFs per engine bnx2x: Do not handle requests from VFs after parity bpf: Clear skb->tstamp in bpf_redirect when necessary btrfs: Fix error messages in qgroup_rescan_init powerpc: Ensure that swiotlb buffer is allocated from low memory samples: bpf: fix syscall_tp due to unused syscall samples: bpf: Replace symbol compare of trace_event ARM: dts: am437x-gp/epos-evm: fix panel compatible spi: spi-ti-qspi: Fix a bug when accessing non default CS bpf, mips: Limit to 33 tail calls bnxt_en: Return error if FW returns more data than dump length ARM: dts: bcm283x: Fix critical trip point ASoC: topology: Check return value for soc_tplg_pcm_create() spi: spi-cavium-thunderx: Add missing pci_release_regions() ARM: dts: Cygnus: Fix MDIO node address/size cells selftests/ftrace: Fix multiple kprobe testcase ARM: dts: BCM5301X: Fix MDIO node address/size cells netfilter: nf_tables: validate NFT_DATA_VALUE after nft_data_init() netfilter: nf_tables: validate NFT_SET_ELEM_INTERVAL_END netfilter: nft_set_rbtree: bogus lookup/get on consecutive elements in named sets netfilter: uapi: Avoid undefined left-shift in xt_sctp.h ARM: vexpress: Set-up shared OPP table instead of individual for each CPU ARM: dts: imx6ul: imx6ul-14x14-evk.dtsi: Fix SPI NOR probing efi/gop: Fix memory leak in __gop_query32/64() efi/gop: Return EFI_SUCCESS if a usable GOP was found efi/gop: Return EFI_NOT_FOUND if there are no usable GOPs ASoC: Intel: bytcr_rt5640: Update quirk for Teclast X89 x86/efi: Update e820 with reserved EFI boot services data to fix kexec breakage libtraceevent: Fix lib installation with O= mwifiex: Fix heap overflow in mmwifiex_process_tdls_action_frame() netfilter: ctnetlink: netns exit must wait for callbacks locking/spinlock/debug: Fix various data races ASoC: max98090: fix possible race conditions regulator: fix use after free issue bpf: Fix passing modified ctx to ld/abs/ind instruction USB: dummy-hcd: increase max number of devices to 32 USB: dummy-hcd: use usb_urb_dir_in instead of usb_pipein Conflicts: kernel/locking/spinlock_debug.c |
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| c7673f0160 |
locking/spinlock/debug: Fix various data races
[ Upstream commit 1a365e822372ba24c9da0822bc583894f6f3d821 ] This fixes various data races in spinlock_debug. By testing with KCSAN, it is observable that the console gets spammed with data races reports, suggesting these are extremely frequent. Example data race report: read to 0xffff8ab24f403c48 of 4 bytes by task 221 on cpu 2: debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline] do_raw_spin_lock+0x9b/0x210 kernel/locking/spinlock_debug.c:112 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x39/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] get_partial_node.isra.0.part.0+0x32/0x2f0 mm/slub.c:1873 get_partial_node mm/slub.c:1870 [inline] <snip> write to 0xffff8ab24f403c48 of 4 bytes by task 167 on cpu 3: debug_spin_unlock kernel/locking/spinlock_debug.c:103 [inline] do_raw_spin_unlock+0xc9/0x1a0 kernel/locking/spinlock_debug.c:138 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:159 [inline] _raw_spin_unlock_irqrestore+0x2d/0x50 kernel/locking/spinlock.c:191 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline] free_debug_processing+0x1b3/0x210 mm/slub.c:1214 __slab_free+0x292/0x400 mm/slub.c:2864 <snip> As a side-effect, with KCSAN, this eventually locks up the console, most likely due to deadlock, e.g. .. -> printk lock -> spinlock_debug -> KCSAN detects data race -> kcsan_print_report() -> printk lock -> deadlock. This fix will 1) avoid the data races, and 2) allow using lock debugging together with KCSAN. Reported-by: Qian Cai <cai@lca.pw> Signed-off-by: Marco Elver <elver@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Link: https://lkml.kernel.org/r/20191120155715.28089-1-elver@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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| 4fa2ab20f5 |
lib: spinlock: Trigger a watchdog bite on spin_dump for rwlock
Currently dump_stack is printed once a spin_bug is detected for rwlock. So provide an options to trigger a panic or watchdog bite for debugging rwlock magic corruptions and lockups. Change-Id: I20807e8eceb8b81635e58701d1f9f9bd36ab5877 Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org> Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org> |
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| e0965e6590 |
lib: spinlock: Cause a watchdog bite on spin_dump
Currently we cause a BUG_ON once a spin_bug is detected, but that causes a whole lot of processing and the other CPUs would have proceeded to perform other actions and the state of the system is moved by the time we can analyze it. Provide an option to trigger a watchdog bite instead so that we can get the traces as close to the issue as possible. Change-Id:Ic8d692ebd02c6940a3b4e5798463744db20b0026 Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org> Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org> |
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| bc88c10d7e |
locking/spinlock/debug: Remove spinlock lockup detection code
The current spinlock lockup detection code can sometimes produce false positives because of the unfairness of the locking algorithm itself. So the lockup detection code is now removed. Instead, we are relying on the NMI watchdog to detect potential lockup. We won't have lockup detection if the watchdog isn't running. The commented-out read-write lock lockup detection code are also removed. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1486583208-11038-1-git-send-email-longman@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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| 60fc28746a |
locking: Move the spinlock code to kernel/locking/
Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-b81ol0z3mon45m51o131yc9j@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
