hrtimer: interrupt took 35126 ns Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = a9df8000 [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 3687 Comm: bash Not tainted 4.9.133-at25 #2 Hardware name: Freescale i.MX7 Dual (Device Tree) task: 9e4f0b80 task.stack: 9e342000 PC is at page_address+0x4/0xf0 LR is at imx_dma_tx+0xd0/0x2e8 pc : [<801ff52c>] lr : [<804e6828>] psr: 20030193 sp : 9e343d18 ip : 00000000 fp : a897021c r10: 81611184 r9 : a8936148 r8 : a826ac10 r7 : 00000001 r6 : a8936148 r5 : 00000001 r4 : a8936010 r3 : 81611184 r2 : ab659000 r1 : 00000024 r0 : 00000000 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c53c7d Table: a9df806a DAC: 00000051 Process bash (pid: 3687, stack limit = 0x9e342218) Stack: (0x9e343d18 to 0x9e344000) 3d00: a8936010 00000001 3d20: a8936148 00000001 a826ac10 804e6828 f5260000 20ac1bb7 a8936010 a8936270 3d40: a8936010 20030193 000003ba ab62b500 00000003 00000000 804e6a40 804e6ab0 3d60: ab62b4c0 a8936270 3949d09b 000003ba ab62b500 8018c320 3949d09b 000003ba 3d80: 816a35a7 80fb47b8 000003ba ab62b4c0 00000003 7fffffff ffffffff ab62b578 3da0: ab62b4d4 ab62b558 ab62b538 8018c56c ab62b578 815214c0 a8936270 a8936270 3dc0: 81604fc4 80bb9b28 a8936270 3949d09b 000003ba 00000000 3949d09b 000003ba 3de0: 81604fc4 a8007100 816051b8 00000011 a8034bc0 00000000 9e343e70 a8008000 3e00: 00000007 808644a8 a8007100 8017e154 81521ce4 00000000 00000011 00000001 3e20: 00000000 80179740 81521ce4 80179c50 816051b8 81628000 c080200c c0802000 3e40: 9e343e70 c0803000 ffffe000 801014c4 8016f8c0 20030013 ffffffff 9e343ea4 3e60: 00000007 9e342000 ffffe000 8010bdcc a9352d8c 00000001 00000001 00000004 3e80: a9352c00 a82a55a0 00000007 0190ac27 00000007 a85173c0 ffffe000 00000007 3ea0: 00000100 9e343ec0 804c7394 8016f8c0 20030013 ffffffff 00000051 7f000000 3ec0: a85bdc00 804cba34 a85173c0 a840a680 a8dcd210 a85173c0 804c724c 0190ac20 3ee0: 9e343f80 00000000 00000007 00000000 00000000 802293dc 00000000 000008da 3f00: 00000000 00000000 00000000 9e343f10 9e4d5340 9e4d5300 0000000a 9e4d5300 3f20: 00000000 80247388 0000000a 802479e0 9e4d5340 9e4d5340 9e4d5300 a85173c0 3f40: a85173c0 00000007 0190ac20 9e343f80 00000000 8022a21c 00000000 80bb9ad4 3f60: a9311a80 a85173c0 a85173c0 00000000 00000000 0190ac20 00000007 8022afb0 3f80: 00000000 00000000 00000000 00000074 0190ac20 76f67db0 00000004 80107a84 3fa0: 9e342000 801078c0 00000074 0190ac20 00000001 0190ac20 00000007 00000000 3fc0: 00000074 0190ac20 76f67db0 00000004 00000007 00000007 00000000 00000000 3fe0: 00000004 7eb9b0d0 76eff443 76e88786 60030030 00000001 00000000 00000000 [<801ff52c>] (page_address) from [<804e6828>] (imx_dma_tx+0xd0/0x2e8) [<804e6828>] (imx_dma_tx) from [<804e6ab0>] (imx_rs485_before_send+0x70/0xf8) [<804e6ab0>] (imx_rs485_before_send) from [<8018c320>] (__hrtimer_run_queues+0x11c/0x19c) [<8018c320>] (__hrtimer_run_queues) from [<8018c56c>] (hrtimer_interrupt+0xb0/0x224) [<8018c56c>] (hrtimer_interrupt) from [<808644a8>] (arch_timer_handler_phys+0x28/0x30) [<808644a8>] (arch_timer_handler_phys) from [<8017e154>] (handle_percpu_devid_irq+0x8c/0x144) [<8017e154>] (handle_percpu_devid_irq) from [<80179740>] (generic_handle_irq+0x24/0x34) [<80179740>] (generic_handle_irq) from [<80179c50>] (__handle_domain_irq+0x7c/0xec) [<80179c50>] (__handle_domain_irq) from [<801014c4>] (gic_handle_irq+0x48/0x8c) [<801014c4>] (gic_handle_irq) from [<8010bdcc>] (__irq_svc+0x6c/0xa8) Exception stack(0x9e343e70 to 0x9e343eb8) 3e60: a9352d8c 00000001 00000001 00000004 3e80: a9352c00 a82a55a0 00000007 0190ac27 00000007 a85173c0 ffffe000 00000007 3ea0: 00000100 9e343ec0 804c7394 8016f8c0 20030013 ffffffff [<8010bdcc>] (__irq_svc) from [<8016f8c0>] (__wake_up+0x0/0x4c) [<8016f8c0>] (__wake_up) from [<0190ac20>] (0x190ac20) Code: e0600622 e020309c e49df004 e92d41f0 (e5903000) Non-crashing CPUs did not react to IPI Loading crashdump kernel... ------------[ cut here ]------------ Kernel BUG at 8010f5b0 [verbose debug info unavailable] Internal error: Oops - BUG: 0 [#2] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 3687 Comm: bash Not tainted 4.9.133-at25 #2 Hardware name: Freescale i.MX7 Dual (Device Tree) task: 9e4f0b80 task.stack: 9e342000 PC is at machine_kexec+0x11c/0x120 LR is at machine_kexec+0x1c/0x120 pc : [<8010f5b0>] lr : [<8010f4b0>] psr: 20030193 sp : 9e343b20 ip : 00000007 fp : ffffe000 r10: 7f000000 r9 : 60030193 r8 : 9e342000 r7 : 0000000b r6 : 9e343b38 r5 : 9e343cc8 r4 : a9125000 r3 : 00000002 r2 : 33333333 r1 : 0f0f0f0f r0 : 00000002 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c53c7d Table: a9df806a DAC: 00000051 Process bash (pid: 3687, stack limit = 0x9e342218) Stack: (0x9e343b20 to 0x9e344000) 3b20: 816ec7e0 9e343cc8 9e343b38 0000000b 9e342000 801a89d8 00000000 00000024 3b40: ab659000 81611184 a8936010 00000001 a8936148 00000001 a826ac10 a8936148 3b60: 81611184 a897021c 00000000 9e343d18 804e6828 801ff52c 20030193 ffffffff 3b80: 81615684 ffffffff 9e343cc8 801a8a6c 816a529c 816109f0 9e343cc8 8010b614 3ba0: 9e342218 0000000b a9df8000 00000000 9e343cc8 00000005 9e4fec40 00000000 3bc0: 9e342000 81611184 a897021c 80115408 00000005 8011578c 00000001 00000000 3be0: 9e03e0bc 81611184 000026c5 00000000 0005cf4e 00000000 00000060 00000000 3c00: 00017c43 81611264 00000005 8011581c 00000000 9e343cc8 9e342000 81611184 3c20: a897021c 801012e8 ab62dc40 81604fc4 a8e4b440 80165ea8 8041f848 00000000 3c40: ffffffe1 0000000c 00000001 a8175500 a897021c ab62dc40 a8970268 9e03e080 3c60: 00000010 00000000 00000000 00ffffff a8e4b440 9e4f0c00 9e4f0b80 ab62dc40 3c80: 0001573b 801602b4 9e4f0b80 ab62dc40 00000000 a8e4b7e0 ab62dc40 a8e4b3c0 3ca0: 81604fc4 80154d34 a8e4b3c0 00000001 801ff52c 20030193 ffffffff 9e343cfc 3cc0: a826ac10 8010bd38 00000000 00000024 ab659000 81611184 a8936010 00000001 3ce0: a8936148 00000001 a826ac10 a8936148 81611184 a897021c 00000000 9e343d18 3d00: 804e6828 801ff52c 20030193 ffffffff 00000051 7f000000 a8936010 00000001 3d20: a8936148 00000001 a826ac10 804e6828 f5260000 20ac1bb7 a8936010 a8936270 3d40: a8936010 20030193 000003ba ab62b500 00000003 00000000 804e6a40 804e6ab0 3d60: ab62b4c0 a8936270 3949d09b 000003ba ab62b500 8018c320 3949d09b 000003ba 3d80: 816a35a7 80fb47b8 000003ba ab62b4c0 00000003 7fffffff ffffffff ab62b578 3da0: ab62b4d4 ab62b558 ab62b538 8018c56c ab62b578 815214c0 a8936270 a8936270 3dc0: 81604fc4 80bb9b28 a8936270 3949d09b 000003ba 00000000 3949d09b 000003ba 3de0: 81604fc4 a8007100 816051b8 00000011 a8034bc0 00000000 9e343e70 a8008000 3e00: 00000007 808644a8 a8007100 8017e154 81521ce4 00000000 00000011 00000001 3e20: 00000000 80179740 81521ce4 80179c50 816051b8 81628000 c080200c c0802000 3e40: 9e343e70 c0803000 ffffe000 801014c4 8016f8c0 20030013 ffffffff 9e343ea4 3e60: 00000007 9e342000 ffffe000 8010bdcc a9352d8c 00000001 00000001 00000004 3e80: a9352c00 a82a55a0 00000007 0190ac27 00000007 a85173c0 ffffe000 00000007 3ea0: 00000100 9e343ec0 804c7394 8016f8c0 20030013 ffffffff 00000051 7f000000 3ec0: a85bdc00 804cba34 a85173c0 a840a680 a8dcd210 a85173c0 804c724c 0190ac20 3ee0: 9e343f80 00000000 00000007 00000000 00000000 802293dc 00000000 000008da 3f00: 00000000 00000000 00000000 9e343f10 9e4d5340 9e4d5300 0000000a 9e4d5300 3f20: 00000000 80247388 0000000a 802479e0 9e4d5340 9e4d5340 9e4d5300 a85173c0 3f40: a85173c0 00000007 0190ac20 9e343f80 00000000 8022a21c 00000000 80bb9ad4 3f60: a9311a80 a85173c0 a85173c0 00000000 00000000 0190ac20 00000007 8022afb0 3f80: 00000000 00000000 00000000 00000074 0190ac20 76f67db0 00000004 80107a84 3fa0: 9e342000 801078c0 00000074 0190ac20 00000001 0190ac20 00000007 00000000 3fc0: 00000074 0190ac20 76f67db0 00000004 00000007 00000007 00000000 00000000 3fe0: 00000004 7eb9b0d0 76eff443 76e88786 60030030 00000001 00000000 00000000 [<8010f5b0>] (machine_kexec) from [<801a89d8>] (__crash_kexec+0x60/0x98) [<801a89d8>] (__crash_kexec) from [<801a8a6c>] (crash_kexec+0x5c/0x68) [<801a8a6c>] (crash_kexec) from [<8010b614>] (die+0x1a0/0x358) [<8010b614>] (die) from [<80115408>] (__do_kernel_fault.part.0+0x64/0x74) [<80115408>] (__do_kernel_fault.part.0) from [<8011578c>] (do_bad_area+0x0/0x80) [<8011578c>] (do_bad_area) from [<00000000>] ( (null)) Code: e12fff33 e1a00004 e8bd41f0 eaffe940 (e7f001f2) ---[ end trace dd5959a77e569d43 ]--- Kernel panic - not syncing: Fatal exception in interrupt SMP: failed to stop secondary CPUs ---[ end Kernel panic - not syncing: Fatal exception in interrupt