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X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: BgqiqSzxrGCoqoL3IzkcIeV4fc89T26XnZaFAVQA+yjh+ae7yT/53vkPffAXgps6sDbjNu+neBQsLq3qqB4w3w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR11MB6182 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Hello, kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on: commit: a034ed36f6462d88aeb8738931398a34a0ecf5f8 ("scsi: core: Call .eh_prepare_resubmit() before resubmitting") https://github.com/bvanassche/linux block-for-next in testcase: boot compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +---------------------------------------------+------------+------------+ | | e4c5981e9c | a034ed36f6 | +---------------------------------------------+------------+------------+ | boot_successes | 13 | 0 | | boot_failures | 0 | 12 | | BUG:kernel_NULL_pointer_dereference,address | 0 | 12 | | Oops:#[##] | 0 | 12 | | RIP:scsi_call_prepare_resubmit | 0 | 12 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 12 | +---------------------------------------------+------------+------------+ If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202308142205.fe3e80ec-oliver.sang@intel.com [ 4.517792][ T681] ata2: found unknown device (class 0) [ 4.519992][ T681] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100 [ 4.525033][ T31] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5 [ 4.549819][ T681] BUG: kernel NULL pointer dereference, address: 00000000000000c0 [ 4.551823][ T681] #PF: supervisor read access in kernel mode [ 4.553329][ T681] #PF: error_code(0x0000) - not-present page [ 4.553794][ T681] PGD 0 P4D 0 [ 4.553794][ T681] Oops: 0000 [#1] PREEMPT SMP PTI [ 4.553794][ T681] CPU: 0 PID: 681 Comm: scsi_eh_1 Not tainted 6.5.0-rc5-00182-ga034ed36f646 #1 [ 4.553794][ T681] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 4.553794][ T681] RIP: 0010:scsi_call_prepare_resubmit+0x8f/0x152 [ 4.553794][ T681] Code: 8b 80 20 02 00 00 31 c0 f3 ab 48 8d 45 08 49 39 c5 74 17 48 8b 45 00 4c 3b 80 20 02 00 00 75 0a 48 8b 6d 08 48 83 ed 08 eb e0 <49> 83 b8 c0 00 00 00 00 75 0d 48 8b 45 08 48 89 ee 48 8d 50 f8 eb [ 4.553794][ T681] RSP: 0000:ffffc90001307e00 EFLAGS: 00010246 [ 4.553794][ T681] RAX: ffff888129413d80 RBX: ffff888129410000 RCX: 0000000000000000 [ 4.553794][ T681] RDX: ffff888129413d78 RSI: ffff888129a8d0f0 RDI: ffffc90001307e10 [ 4.553794][ T681] RBP: ffff888129413d78 R08: 0000000000000000 R09: 0000000000000000 [ 4.553794][ T681] R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90001307e00 [ 4.553794][ T681] R13: ffff888129413d80 R14: ffff888129413dd8 R15: 0000000000000001 [ 4.553794][ T681] FS: 0000000000000000(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000 [ 4.553794][ T681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.553794][ T681] CR2: 00000000000000c0 CR3: 0000000002432000 CR4: 00000000000406f0 [ 4.553794][ T681] Call Trace: [ 4.553794][ T681] [ 4.553794][ T681] ? __die_body+0x1e/0x5c [ 4.553794][ T681] ? page_fault_oops+0xf3/0x13c [ 4.553794][ T681] ? kernelmode_fixup_or_oops+0xa4/0xb0 [ 4.553794][ T681] ? __bad_area_nosemaphore+0x43/0x1bc [ 4.553794][ T681] ? exc_page_fault+0xfd/0x116 [ 4.553794][ T681] ? asm_exc_page_fault+0x26/0x30 [ 4.553794][ T681] ? scsi_call_prepare_resubmit+0x8f/0x152 [ 4.553794][ T681] scsi_eh_flush_done_q+0x15/0x10d [ 4.553794][ T681] ata_scsi_port_error_handler+0x486/0x4ff [ 4.553794][ T681] ? scsi_unjam_host+0x1b0/0x1b0 [ 4.553794][ T681] ata_scsi_error+0x95/0xbe [ 4.553794][ T681] scsi_error_handler+0x14c/0x1ca [ 4.553794][ T681] kthread+0xf6/0xfe [ 4.553794][ T681] ? kthread_complete_and_exit+0x1f/0x1f [ 4.553794][ T681] ret_from_fork+0x25/0x37 [ 4.553794][ T681] ? kthread_complete_and_exit+0x1f/0x1f [ 4.553794][ T681] ret_from_fork_asm+0x11/0x20 [ 4.553794][ T681] [ 4.553794][ T681] Modules linked in: [ 4.553794][ T681] CR2: 00000000000000c0 [ 4.553794][ T681] ---[ end trace 0000000000000000 ]--- [ 4.553794][ T681] RIP: 0010:scsi_call_prepare_resubmit+0x8f/0x152 [ 4.553794][ T681] Code: 8b 80 20 02 00 00 31 c0 f3 ab 48 8d 45 08 49 39 c5 74 17 48 8b 45 00 4c 3b 80 20 02 00 00 75 0a 48 8b 6d 08 48 83 ed 08 eb e0 <49> 83 b8 c0 00 00 00 00 75 0d 48 8b 45 08 48 89 ee 48 8d 50 f8 eb [ 4.553794][ T681] RSP: 0000:ffffc90001307e00 EFLAGS: 00010246 [ 4.553794][ T681] RAX: ffff888129413d80 RBX: ffff888129410000 RCX: 0000000000000000 [ 4.553794][ T681] RDX: ffff888129413d78 RSI: ffff888129a8d0f0 RDI: ffffc90001307e10 [ 4.553794][ T681] RBP: ffff888129413d78 R08: 0000000000000000 R09: 0000000000000000 [ 4.553794][ T681] R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90001307e00 [ 4.553794][ T681] R13: ffff888129413d80 R14: ffff888129413dd8 R15: 0000000000000001 [ 4.553794][ T681] FS: 0000000000000000(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000 [ 4.553794][ T681] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4.553794][ T681] CR2: 00000000000000c0 CR3: 0000000002432000 CR4: 00000000000406f0 [ 4.553794][ T681] Kernel panic - not syncing: Fatal exception [ 4.553794][ T681] Kernel Offset: disabled The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20230814/202308142205.fe3e80ec-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki