On Tue, 2016-10-18 at 16:25 -0400, CAI Qian wrote: > Reproducible warnings while running the LTP tests fcntl33 and fcntl33_64. Never saw it > in v4.8 if I remember correctly. Not sure if something could cause problems later on. > > https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/fcntl/fcntl33.c > > [ 1593.912336] WARNING: CPU: 3 PID: 22443 at fs/locks.c:615 locks_unlink_lock_ctx+0x350/0x4f0 > [ 1593.921570] Modules linked in:[ 1593.924811] loop veth ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack br_netfilter bridge stp llc overlay intel_rapl sb_edac edac_core x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt iTCO_vendor_support pcspkr i2c_i801 i2c_smbus sg lpc_ich mei_me mei shpchp mxm_wmi ipmi_ssif ipmi_si ipmi_msghandler wmi acpi_power_meter acpi_pad nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sr_mod sd_mod cdrom mgag200 i2c_algo_bit drm_kms_helper crc32c_intel syscopyarea sysfillrect sysimgblt fb_sys_fops serio_raw ttm ixgbe drm ahci libahci libata mdio ptp i2c_core pps_core dca fjes dm_mirror dm_region_hash dm_log dm_mod > [ 1594.009470] CPU: 3 PID: 22443 Comm: fcntl33 Tainted: G W 4.9.0-rc1-yuncore #45 > [ 1594.018782] Hardware name: Intel Corporation S2600WTT/S2600WTT, BIOS GRRFSDP1.86B.0271.R00.1510301446 10/30/2015 > [ 1594.030138] ffff88080ef57bd8 ffffffff81d43634 0000000041b58ab3 ffffffff8335078f > [ 1594.038434] ffffffff81d43574 ffff88080ef57b00 ffff88083bca0cd0 977468135b731612 > [ 1594.046729] 00000000c38a36a8 ffff88085ac58a18 0000000000000003 00000000000057ab > [ 1594.055025] Call Trace: > [ 1594.057757] [<ffffffff81d43634>] dump_stack+0xc0/0x12c > [ 1594.063589] [<ffffffff81d43574>] ? _atomic_dec_and_lock+0xc4/0xc4 > [ 1594.070488] [<ffffffff811d0aee>] __warn+0x19e/0x1d0 > [ 1594.076018] [<ffffffff811d0d0d>] warn_slowpath_null+0x1d/0x20 > [ 1594.082527] [<ffffffff819db1e0>] locks_unlink_lock_ctx+0x350/0x4f0 > [ 1594.089520] [<ffffffff819dae90>] ? locks_wake_up_blocks+0x1d0/0x1d0 > [ 1594.096614] [<ffffffff82c964e1>] ? _raw_spin_unlock+0x31/0x50 > [ 1594.103127] [<ffffffff818d9efd>] ? fasync_remove_entry+0x9d/0x1d0 > [ 1594.110023] [<ffffffff819db397>] locks_delete_lock_ctx+0x17/0x70 > [ 1594.116824] [<ffffffff819ddf87>] lease_modify+0x1e7/0x2c0 > [ 1594.122946] [<ffffffff819eaa46>] locks_remove_file+0x2c6/0x490 > [ 1594.129550] [<ffffffff819ea780>] ? fcntl_setlk+0xef0/0xef0 > [ 1594.135770] [<ffffffff81278195>] ? __might_sleep+0x65/0x260 > [ 1594.142087] [<ffffffff8189900e>] __fput+0x20e/0x880 > [ 1594.147627] [<ffffffff818040c3>] ? kfree+0x3f3/0x620 > [ 1594.153264] [<ffffffff818996fe>] ____fput+0xe/0x10 > [ 1594.158707] [<ffffffff812502e0>] task_work_run+0xd0/0x1a0 > [ 1594.164829] [<ffffffff81004c8b>] exit_to_usermode_loop+0xfb/0x140 > [ 1594.171727] [<ffffffff81009455>] do_syscall_64+0x3a5/0x540 > [ 1594.177944] [<ffffffff82c96f24>] entry_SYSCALL64_slow_path+0x25/0x25 > [ 1594.185181] ---[ end trace f7fe67b590690a05 ]--- > [ 1594.240757] ------------[ cut here ]------------ > [ 1594.245918] WARNING: CPU: 54 PID: 22451 at fs/locks.c:615 locks_unlink_lock_ctx+0x350/0x4f0 > [ 1594.255247] Modules linked in:[ 1594.258469] loop veth ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack br_netfilter bridge stp llc overlay intel_rapl sb_edac edac_core x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt iTCO_vendor_support pcspkr i2c_i801 i2c_smbus sg lpc_ich mei_me mei shpchp mxm_wmi ipmi_ssif ipmi_si ipmi_msghandler wmi acpi_power_meter acpi_pad nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sr_mod sd_mod cdrom mgag200 i2c_algo_bit drm_kms_helper crc32c_intel syscopyarea sysfillrect sysimgblt fb_sys_fops serio_raw ttm ixgbe drm ahci libahci libata mdio ptp i2c_core pps_core dca fjes dm_mirror dm_region_hash dm_log dm_mod > [ 1594.343233] CPU: 54 PID: 22451 Comm: fcntl33_64 Tainted: G W 4.9.0-rc1-yuncore #45 > [ 1594.352942] Hardware name: Intel Corporation S2600WTT/S2600WTT, BIOS GRRFSDP1.86B.0271.R00.1510301446 10/30/2015 > [ 1594.364298] ffff88080ef57bd8 ffffffff81d43634 0000000041b58ab3 ffffffff8335078f > [ 1594.372589] ffffffff81d43574 ffff88080ef57b00 ffff88083bca3150 977468135b731612 > [ 1594.380881] 000000003f001529 ffff88085e658a18 0000000000000036 00000000000057b3 > [ 1594.389184] Call Trace: > [ 1594.391913] [<ffffffff81d43634>] dump_stack+0xc0/0x12c > [ 1594.397744] [<ffffffff81d43574>] ? _atomic_dec_and_lock+0xc4/0xc4 > [ 1594.404640] [<ffffffff811d0aee>] __warn+0x19e/0x1d0 > [ 1594.410179] [<ffffffff811d0d0d>] warn_slowpath_null+0x1d/0x20 > [ 1594.416688] [<ffffffff819db1e0>] locks_unlink_lock_ctx+0x350/0x4f0 > [ 1594.423682] [<ffffffff819dae90>] ? locks_wake_up_blocks+0x1d0/0x1d0 > [ 1594.430773] [<ffffffff82c964e1>] ? _raw_spin_unlock+0x31/0x50 > [ 1594.437282] [<ffffffff818d9efd>] ? fasync_remove_entry+0x9d/0x1d0 > [ 1594.444178] [<ffffffff819db397>] locks_delete_lock_ctx+0x17/0x70 > [ 1594.450978] [<ffffffff819ddf87>] lease_modify+0x1e7/0x2c0 > [ 1594.457099] [<ffffffff819eaa46>] locks_remove_file+0x2c6/0x490 > [ 1594.463704] [<ffffffff819ea780>] ? fcntl_setlk+0xef0/0xef0 > [ 1594.469922] [<ffffffff81278195>] ? __might_sleep+0x65/0x260 > [ 1594.476237] [<ffffffff8189900e>] __fput+0x20e/0x880 > [ 1594.481777] [<ffffffff818040c3>] ? kfree+0x3f3/0x620 > [ 1594.487414] [<ffffffff818996fe>] ____fput+0xe/0x10 > [ 1594.492856] [<ffffffff812502e0>] task_work_run+0xd0/0x1a0 > [ 1594.498978] [<ffffffff81004c8b>] exit_to_usermode_loop+0xfb/0x140 > [ 1594.505877] [<ffffffff81009455>] do_syscall_64+0x3a5/0x540 > [ 1594.512098] [<ffffffff82c96f24>] entry_SYSCALL64_slow_path+0x25/0x25 > [ 1594.519318] ---[ end trace f7fe67b590690a06 ]--- This looks like the problem that Peter Z. just recently fixed in the file locking code. Does the kernel you're testing have commit 5f43086bb9224987010460dcf3dee68fbd4f574d ? -- Jeff Layton <jlayton@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
