IPv6: ADDRCONF(NETDEV_UP): veth2407: link is not ready MINIX-fs: mounting unchecked file system, running fsck is recommended attempt to access beyond end of device loop2: rw=2049, want=6434, limit=52 BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 PGD 210f35067 P4D 210f35067 PUD 20b6a2067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10640 Comm: syz-executor.2 Not tainted 4.19.113-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:test_and_set_bit arch/x86/include/asm/bitops.h:209 [inline] RIP: 0010:test_and_set_bit_lock arch/x86/include/asm/bitops.h:223 [inline] RIP: 0010:trylock_buffer include/linux/buffer_head.h:359 [inline] RIP: 0010:lock_buffer include/linux/buffer_head.h:365 [inline] RIP: 0010:alloc_branch fs/minix/itree_common.c:88 [inline] RIP: 0010:get_block+0x76c/0x1300 fs/minix/itree_common.c:191 team0: Port device veth2407 added Code: 00 00 49 8b bc 24 28 01 00 00 b9 08 00 00 00 e8 fa 42 bc ff 31 d2 be 6c 01 00 00 48 c7 c7 60 48 7c 87 49 89 c4 e8 b4 66 4e ff 49 0f ba 2c 24 02 40 0f 92 c6 31 ff 40 88 74 24 78 e8 cd 0d 6f RSP: 0018:ffff88820e107788 EFLAGS: 00010246 RAX: 0000000000000007 RBX: ffff88820e107888 RCX: 1ffffffff11f89f8 RDX: 0000000000000000 RSI: ffffffff88b92960 RDI: ffff88802740e3a4 RBP: ffff88820e107920 R08: ffff88802740e380 R09: fffff9400109abdf R10: fffff9400109abde R11: ffffea00084d5ef7 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88820e10784c R15: 0000000000000c98 FS: 00007fd7a4cc5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000210f34000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: minix_get_block+0xe5/0x110 fs/minix/inode.c:379 __block_write_begin_int+0x480/0x17a0 fs/buffer.c:1967 __block_write_begin fs/buffer.c:2017 [inline] block_write_begin+0x58/0x2e0 fs/buffer.c:2076 minix_write_begin+0x35/0xe0 fs/minix/inode.c:415 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3162 __generic_file_write_iter+0x24c/0x610 mm/filemap.c:3287 generic_file_write_iter+0x37f/0x729 mm/filemap.c:3315 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x512/0x760 fs/read_write.c:487 vfs_write+0x206/0x550 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c849 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd7a4cc4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fd7a4cc56d4 RCX: 000000000045c849 RDX: 0000000008800000 RSI: 0000000020000180 RDI: 0000000000000006 RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000ce7 R14: 00000000004cf0bc R15: 000000000076bf0c Modules linked in: CR2: 0000000000000000 ---[ end trace c306e383137a3778 ]--- RIP: 0010:test_and_set_bit arch/x86/include/asm/bitops.h:209 [inline] RIP: 0010:test_and_set_bit_lock arch/x86/include/asm/bitops.h:223 [inline] RIP: 0010:trylock_buffer include/linux/buffer_head.h:359 [inline] RIP: 0010:lock_buffer include/linux/buffer_head.h:365 [inline] RIP: 0010:alloc_branch fs/minix/itree_common.c:88 [inline] RIP: 0010:get_block+0x76c/0x1300 fs/minix/itree_common.c:191 loop1: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 p13 p16 p17 p18 Code: 00 00 49 8b bc 24 28 01 00 00 b9 08 00 00 00 e8 fa 42 bc ff 31 d2 be 6c 01 00 00 48 c7 c7 60 48 7c 87 49 89 c4 e8 b4 66 4e ff 49 0f ba 2c 24 02 40 0f 92 c6 31 ff 40 88 74 24 78 e8 cd 0d 6f loop1: p1 start 2347831991 is beyond EOD, truncated netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. loop1: p2 start 1560885292 is beyond EOD, truncated Dev loop3 SGI disklabel: csum bad, label corrupted loop1: p3 start 1241228059 is beyond EOD, truncated loop1: p4 start 1888971601 is beyond EOD, truncated RSP: 0018:ffff88820e107788 EFLAGS: 00010246 loop1: p5 start 1423647649 is beyond EOD, truncated loop1: p6 start 1837542903 is beyond EOD, truncated netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'. loop1: p7 start 4252269685 is beyond EOD, truncated RAX: 0000000000000007 RBX: ffff88820e107888 RCX: 1ffffffff11f89f8 loop1: p8 start 2083048398 is beyond EOD, truncated loop1: p9 start 1023909731 is beyond EOD, truncated loop1: p10 start 4052186755 is beyond EOD, truncated loop1: p11 start 492134008 is beyond EOD, truncated RDX: 0000000000000000 RSI: ffffffff88b92960 RDI: ffff88802740e3a4 loop1: p12 start 892873339 is beyond EOD, truncated loop1: p13 start 11657818 is beyond EOD, truncated loop1: p16 start 1735176486 is beyond EOD, truncated RBP: ffff88820e107920 R08: ffff88802740e380 R09: fffff9400109abdf loop1: p17 start 1318354637 is beyond EOD, truncated loop1: p18 start 2407104601 is beyond EOD, truncated R10: fffff9400109abde R11: ffffea00084d5ef7 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88820e10784c R15: 0000000000000c98 FS: 00007fd7a4cc5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c820000 CR3: 0000000210f34000 CR4: 00000000001406f0 IPv6: ADDRCONF(NETDEV_UP): veth39: link is not ready DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400