https://bugzilla.kernel.org/show_bug.cgi?id=205465 --- Comment #5 from Zorro Lang (zlang@xxxxxxxxxx) --- Hit this issue again on upstream mainline kernel 5.5.0-rc4, the HEAD commit is: commit fd6988496e79a6a4bdb514a4655d2920209eb85d Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Sun Dec 29 15:29:16 2019 -0800 Linux 5.5-rc4 [31287.078801] kasan: CONFIG_KASAN_INLINE enabled [31287.141302] kasan: GPF could be caused by NULL-ptr deref or user memory access [31287.175211] general protection fault: 0000 [#1] SMP KASAN PTI [31287.202065] CPU: 18 PID: 14354 Comm: fsstress Not tainted 5.5.0-rc4+ #1 [31287.231860] Hardware name: HP ProLiant XL190r Gen9/ProLiant XL190r Gen9, BIOS U14 05/22/2018 [31287.270854] RIP: 0010:iter_file_splice_write+0x65f/0xa10 [31287.296139] Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 1a 00 0f 85 e8 02 00 00 48 8b 56 10 48 c7 46 10 00 00 00 00 48 8d 7a 08 48 89 f9 48 c1 e9 03 <80> 3c 19 00 0f 85 80 02 00 00 48 8b 52 08 4c 89 ff 41 83 c5 01 e8 [31287.384468] RSP: 0018:ffff888074e778e0 EFLAGS: 00010202 [31287.409475] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000001 [31287.442886] RDX: 0000000000000000 RSI: ffff888045ddc000 RDI: 0000000000000008 [31287.475859] RBP: ffffed100909fa27 R08: fffff9400014fa97 R09: fffff9400014fa97 [31287.509173] R10: fffff9400014fa96 R11: ffffea0000a7d4b7 R12: 000000000000d38a [31287.543272] R13: 0000000000000010 R14: ffffed100909fa1f R15: ffff8880484fd000 [31287.577414] FS: 00007fa75d7f2b80(0000) GS:ffff888114200000(0000) knlGS:0000000000000000 [31287.616719] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [31287.645465] CR2: 00007ffb22049978 CR3: 000000010055c006 CR4: 00000000001606e0 [31287.681499] Call Trace: [31287.693418] ? __x64_sys_tee+0x220/0x220 [31287.712293] ? generic_file_splice_read+0x4f5/0x6c0 [31287.735384] ? add_to_pipe+0x370/0x370 [31287.753082] ? _cond_resched+0x15/0x30 [31287.770530] direct_splice_actor+0x107/0x1d0 [31287.790652] splice_direct_to_actor+0x32d/0x8a0 [31287.812108] ? wakeup_pipe_readers+0x80/0x80 [31287.831962] ? do_splice_to+0x140/0x140 [31287.849955] ? security_file_permission+0x53/0x2b0 [31287.872161] do_splice_direct+0x158/0x250 [31287.890904] ? splice_direct_to_actor+0x8a0/0x8a0 [31287.912841] ? __sb_start_write+0x1c4/0x310 [31287.932673] vfs_copy_file_range+0x39c/0xa40 [31287.952671] ? __x64_sys_sendfile+0x1d0/0x1d0 [31287.972959] ? lockdep_hardirqs_on+0x590/0x590 [31287.993801] ? lock_downgrade+0x6d0/0x6d0 [31288.012379] ? lock_acquire+0x15a/0x3d0 [31288.030130] ? __might_fault+0xc4/0x1a0 [31288.048482] __x64_sys_copy_file_range+0x1e8/0x460 [31288.070780] ? __ia32_sys_copy_file_range+0x460/0x460 [31288.094431] ? __audit_syscall_exit+0x796/0xab0 [31288.115526] do_syscall_64+0x9f/0x4f0 [31288.133481] entry_SYSCALL_64_after_hwframe+0x49/0xbe [31288.160230] RIP: 0033:0x7fa75cce36ed [31288.178391] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 6b 57 2c 00 f7 d8 64 89 01 48 [31288.266254] RSP: 002b:00007ffe44247728 EFLAGS: 00000246 ORIG_RAX: 0000000000000146 [31288.302144] RAX: ffffffffffffffda RBX: 000000000000037d RCX: 00007fa75cce36ed [31288.335625] RDX: 0000000000000004 RSI: 00007ffe44247760 RDI: 0000000000000003 [31288.368948] RBP: 00000000006ec600 R08: 000000000001092c R09: 0000000000000000 [31288.402554] R10: 00007ffe44247768 R11: 0000000000000246 R12: 0000000000000003 [31288.435810] R13: 000000000001092c R14: 0000000000027b80 R15: 00000000001037f6 [31288.469094] Modules linked in: loop intel_rapl_msr iTCO_wdt intel_rapl_common iTCO_vendor_support sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate intel_uncore intel_rapl_perf pcspkr nd_pmem dax_pmem_compat device_dax dax_pmem_core rfkill i2c_i801 lpc_ich hpilo hpwdt sunrpc ipmi_ssif ioatdma ipmi_si acpi_tad ipmi_devintf ipmi_msghandler acpi_power_meter ext4 mbcache jbd2 ip_tables xfs libcrc32c sd_mod sg mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm_vram_helper drm_ttm_helper ttm drm ahci igb serio_raw crc32c_intel libahci libata tg3 dca i2c_algo_bit wmi [31288.752336] ---[ end trace 568a174fdf5e3acb ]--- [31288.782986] RIP: 0010:iter_file_splice_write+0x65f/0xa10 [31288.807838] Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 1a 00 0f 85 e8 02 00 00 48 8b 56 10 48 c7 46 10 00 00 00 00 48 8d 7a 08 48 89 f9 48 c1 e9 03 <80> 3c 19 00 0f 85 80 02 00 00 48 8b 52 08 4c 89 ff 41 83 c5 01 e8 [31288.895645] RSP: 0018:ffff888074e778e0 EFLAGS: 00010202 [31288.920068] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000001 [31288.953407] RDX: 0000000000000000 RSI: ffff888045ddc000 RDI: 0000000000000008 [31288.986935] RBP: ffffed100909fa27 R08: fffff9400014fa97 R09: fffff9400014fa97 [31289.019794] R10: fffff9400014fa96 R11: ffffea0000a7d4b7 R12: 000000000000d38a [31289.052915] R13: 0000000000000010 R14: ffffed100909fa1f R15: ffff8880484fd000 [31289.086764] FS: 00007fa75d7f2b80(0000) GS:ffff888114200000(0000) knlGS:0000000000000000 [31289.124620] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [31289.151387] CR2: 00007ffb22049978 CR3: 000000010055c006 CR4: 00000000001606e0 [31301.358103] XFS (sdb2): Unmounting Filesystem [31301.706524] XFS (sdb2): Mounting V5 Filesystem -- You are receiving this mail because: You are watching the assignee of the bug.
