NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop3): mounting unchecked fs NILFS (loop3): invalid segment: Checksum error in segment payload NILFS (loop3): unable to fall back to spare super block NILFS (loop3): error -22 while searching super root BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1355 in_atomic(): 0, irqs_disabled(): 1, pid: 9440, name: syz-executor.0 1 lock held by syz-executor.0/9440: #0: 000000001b15ec7a (&mm->mmap_sem){++++}, at: __do_page_fault+0x3e2/0xe00 arch/x86/mm/fault.c:1341 irq event stamp: 1234 hardirqs last enabled at (1233): [] count_memcg_events include/linux/memcontrol.h:745 [inline] hardirqs last enabled at (1233): [] count_memcg_event_mm include/linux/memcontrol.h:766 [inline] hardirqs last enabled at (1233): [] handle_mm_fault+0x836/0xb90 mm/memory.c:4182 hardirqs last disabled at (1234): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1208): [] __do_softirq+0x6d1/0xad2 kernel/softirq.c:318 softirqs last disabled at (1193): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (1193): [] irq_exit+0x22d/0x270 kernel/softirq.c:412 CPU: 1 PID: 9440 Comm: syz-executor.0 Not tainted 4.19.147-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x22c/0x33e lib/dump_stack.c:118 ___might_sleep.cold+0x6a/0x7e kernel/sched/core.c:6196 __do_page_fault+0x40d/0xe00 arch/x86/mm/fault.c:1355 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:prepare_exit_to_usermode+0x17f/0x300 arch/x86/entry/common.c:192 Code: e8 46 25 71 00 48 b8 00 00 00 00 00 fc ff df 65 48 8b 2c 25 40 ee 01 00 48 8d bd 50 08 00 00 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> 70 77 77 07 03 0f 8e 38 01 00 00 8b ad 50 08 00 00 31 ff 89 ee RSP: 0000:ffff88804acf7f30 EFLAGS: 00010802 RAX: 0000000000000000 RBX: ffff88804fdee400 RCX: ffffffff81009d91 RDX: 1ffff11009fbdd8a RSI: ffffffff81009d9a RDI: ffff88804fdeec50 RBP: ffff88804fdee400 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000001 R12: ffff88804acf7f58 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 retint_user+0x8/0x18 RIP: 0033:0x401e80 Code: 48 8d 44 24 20 c7 44 24 04 30 00 00 00 48 89 44 24 10 e8 73 fc 05 00 48 8b 3d e4 a6 34 00 e8 87 62 02 00 eb 99 e8 00 00 06 00 <41> 56 41 55 41 54 55 49 89 fc 53 48 81 ec e0 04 00 00 84 c0 48 89 RSP: 002b:00007ffc61c395f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000045dea7 RDX: 00007ffc61c39693 RSI: 00000000004c3ac4 RDI: 00000000004c3ac9 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000013 R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000000001 R13: 00007ffc61c39630 R14: 0000000000000000 R15: 00007ffc61c39640 BUG: unable to handle kernel NULL pointer dereference at 0000000000000077 PGD 2180a067 P4D 2180a067 PUD 4a61e067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9440 Comm: syz-executor.0 Tainted: G W 4.19.147-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:prepare_exit_to_usermode+0x17f/0x300 arch/x86/entry/common.c:192 Code: e8 46 25 71 00 48 b8 00 00 00 00 00 fc ff df 65 48 8b 2c 25 40 ee 01 00 48 8d bd 50 08 00 00 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> 70 77 77 07 03 0f 8e 38 01 00 00 8b ad 50 08 00 00 31 ff 89 ee RSP: 0000:ffff88804acf7f30 EFLAGS: 00010802 RAX: 0000000000000000 RBX: ffff88804fdee400 RCX: ffffffff81009d91 RDX: 1ffff11009fbdd8a RSI: ffffffff81009d9a RDI: ffff88804fdeec50 RBP: ffff88804fdee400 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000001 R12: ffff88804acf7f58 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00000000024d1940(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000077 CR3: 00000000a02ee000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: retint_user+0x8/0x18 RIP: 0033:0x401e80 Code: 48 8d 44 24 20 c7 44 24 04 30 00 00 00 48 89 44 24 10 e8 73 fc 05 00 48 8b 3d e4 a6 34 00 e8 87 62 02 00 eb 99 e8 00 00 06 00 <41> 56 41 55 41 54 55 49 89 fc 53 48 81 ec e0 04 00 00 84 c0 48 89 RSP: 002b:00007ffc61c395f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000045dea7 RDX: 00007ffc61c39693 RSI: 00000000004c3ac4 RDI: 00000000004c3ac9 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000013 R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000000001 R13: 00007ffc61c39630 R14: 0000000000000000 R15: 00007ffc61c39640 Modules linked in: CR2: 0000000000000077 ---[ end trace 1e9ac2ab868dd4f7 ]--- RIP: 0010:prepare_exit_to_usermode+0x17f/0x300 arch/x86/entry/common.c:192 Code: e8 46 25 71 00 48 b8 00 00 00 00 00 fc ff df 65 48 8b 2c 25 40 ee 01 00 48 8d bd 50 08 00 00 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> 70 77 77 07 03 0f 8e 38 01 00 00 8b ad 50 08 00 00 31 ff 89 ee RSP: 0000:ffff88804acf7f30 EFLAGS: 00010802 RAX: 0000000000000000 RBX: ffff88804fdee400 RCX: ffffffff81009d91 RDX: 1ffff11009fbdd8a RSI: ffffffff81009d9a RDI: ffff88804fdeec50 RBP: ffff88804fdee400 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000001 R12: ffff88804acf7f58 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00000000024d1940(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000077 CR3: 00000000a02ee000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400